Abstract: A modular power distribution unit (PDU) for supplying electric power to attached equipment in environments such as data centers, computer rooms, and communication centers, where power requirements for attached equipment may vary. The power distribution unit includes a frame and one or more user-replaceable power modules, which fit into slots in the frame. Each power module provides one of more plug receptacles for attaching equipment to provide power thereto. The power modules are available in a variety of receptacle types, receptacle numbers, and power rating configurations to accommodate various equipment in a particular environment, as needed. The frame includes an internal connector panel for distributing power from a power source to the power modules when they are inserted in the frame. The power modules may be removed, installed, and interchanged in the frame without interrupting power to other power modules or to the power distribution unit.

Abstract: A power module includes a heat radiating member, a power circuit section, a resin layer, and a case. The heat radiating member includes a circuit disposition surface. The power circuit section includes an external connection terminal and is disposed on the circuit disposition surface. The resin layer covers a part of the external connection terminal. The case is attached to the heat radiating member. The external connection terminal stands up from the heat radiating member. The case includes a hood, which has an opening at one end portion thereof. The external connection terminal is inserted into the hood. The resin layer prevents liquid from entering through the hood.

Abstract: A housing has a housing portion with a main portion and a retainer extending from the main portion. The retainer may cooperate with a first printed circuit board element to hold the first printed circuit board element in spaced relation to the main portion and hold a second printed circuit board element in spaced relation to the first printed circuit board element. The housing may have first and second housing portions that cooperate to form an enclosure for supporting a printer circuit board. A support element extends from the first housing portion. The retainer cooperates with the first printed circuit board element to pull the first printed circuit board element toward the support element, which supports the first printed circuit board element in spaced relation to the first housing portion. The retainer also holds a second printed circuit board element in spaced relation to the first printed circuit board element. The housing may be used in a control module.

Abstract: An equipment tray for simplified insertion and removal of electronic equipment to a rack is described. The electronics equipment can be horizontally or vertically mounted. The tray has a first region in which electronics equipment is releasably secured and a second region that provides cable management and exhaust airflow control.

Abstract: The present invention is directed to an electrical equipment enclosure assembly, particularly those used to house power distribution equipment. The enclosure uses the internal structural members and panel components to form the enclosure frame. The present invention is also designed to be mounted in the 2 ft.×2 ft. (600 mm×600 mm) tile space provided in raised flooring. The enclosure is also provided with a junction box that is mounted beneath the raised flooring to allow users to terminate wiring.

Abstract: A control device is for a commercially available switchgear and an electronic power module. Compactness of the device is improved so that it can be used in a switchgear cabinet. To this end, the power module is placed onto the switchgear on the side facing away from its bottom wall and the dimensions of the power module are adapted to the base contour of the switchgear so that the peripheral contour of the power module extends beyond the base contour only slightly, if at all, wherein at least the width of the contactor does not extend beyond it.

Abstract: A housing has a housing portion with a main portion and a retainer extending from the main portion. The retainer may cooperate with a first printed circuit board element to hold the first printed circuit board element in spaced relation to the main portion and hold a second printed circuit board element in spaced relation to the first printed circuit board element. The housing may have first and second housing portions that cooperate to form an enclosure for supporting a printer circuit board. A support element extends from the first housing portion. The retainer cooperates with the first printed circuit board element to pull the first printed circuit board element toward the support element, which supports the first printed circuit board element in spaced relation to the first housing portion. The retainer also holds a second printed circuit board element in spaced relation to the first printed circuit board element. The housing may be used in a control module.

Abstract: A transparent window for a multiple socket includes a housing and a transparent plate. Wherein, the socket is provided with receptacles and an embedding region. The embedding region is for forming a transparent window by covering the transparent plate thereon, and the transparent plate is further formed with indicative or decorative texts and symbols, thereby indicating uses of individual receptacles of the multiple socket and decorating the multiple socket.

Abstract: A cabinet for mounting electronic equipment having power input port mounted external to the frame of the cabinet in order to make installation of a power input unit more convenient. The power input port may be mounted on the bottom of the cabinet whereby the power input unit, for example, a power distribution unit, may be installed prior to, during, or after installation of the cabinet. In addition, among other things, the mounting of a power input unit outside the frame of the cabinet provides for improved accessability and servicing of the power input unit and provides for more usable space inside the cabinet frame.

Abstract: The structure, provides autonomous automation, digitalize data, and effective use data by utilizing a network. A measuring card for measuring voltage and current according to values detected by the state detector that detects voltage and current of the system, a protection card for performing a protective arithmetical operation according to values detected by the state detector and outputting a protection command to a controller, and a control card for performing a protective arithmetical operation according to values detected by the state detector and outputting a control command to a controller are integrated within an on-site cubicle, wherein the protection card, measuring card, and control card are connected to the substation monitoring and controlling device via a serial bus which is shared by those cards, and data is sent and received between those cards and the monitoring and controlling device via the serial bus.

Abstract: A power supply casing includes a top casing having a recessed area defined in a mediate portion of the top casing and multiple cutouts defined in a slanted front portion of the top casing. A bottom casing has multiple sets of conducting plates formed on a rear portion of the bottom casing to correspond to multiple sockets in the top casing. Switches are electrically connected to the multiple sets of conducting plates and buttons are respectively arranged in the cutouts of the top casing. Each button corresponds to one of the switches such that each button is able to control initiation of one switch, which activates power supply from one specific socket to a specific computer peripheral device and a total space occupied by the power supply casing is small.

Abstract: A current mode coupler includes a unitary casing, a stub cable connector, a circuit board, a magnetic structure, a wire core holder, an enclosing lid and an E-core situated in a cavity in the unitary casing and an I-core affixed to the enclosing lid. When the enclosing lid is in a closed position, the E-core and the I-core contact, forming a transformer. When electrical current is present in a data bus that is situated within the E-core/I-core arrangement, the coupler magnetically couples the current mode doublets on the data bus to the circuitry enclosed in the unitary casing. The current mode doublets sensed on the data bus is then converted to voltage mode doublets and transmitted to the stub interface. The current mode coupler also receives voltage mode doublets through the stub interface, converts the voltage mode doublets to current mode doublets, and transmits the current mode doublets via the E-core/I-core arrangement.

Abstract: A wiring portal assembly for mounting to a roof curb of a structural roof comprises an elongate housing extending axially between a first end and a second end. A flashing skirt is located at an axially intermediate location of the elongate housing for sealingly engaging the roof curb. An attachment structure is located on the elongate housing for facilitating attachment of an electrical switch device.

Abstract: A below grade utilities connections vault is disclosed. The vault of the present invention comprises a concrete box with lockable, hinged lid. A floor platform lies at a distance above the bottom of the box such that utilities cables enter the box below the level of the floor. A hinged utilities wiring frame is mounted to the wall opposite the lid hinge such that the frame hinges down into the box when the vault is closed and into a vertical position for making connections. A safety barrier is formed by the lid, the wiring frame, and barrier arms which hinge between them surrounds the vault, when open. A venting system provides egress for gasses and equalization of pressure between the interior and exterior of the vault.

Abstract: In the power distributor using a semiconductor switching element, input terminals 10I and 10L, output terminals 12A-12J, connected to the element, and more preferably, the board terminals 30 and 32, are structured by a metallic plate, and arranged on the same plane perpendicular to the plate thickness. The metallic plate can be integrated by the resin mold, thereby the structure can be greatly simplified. The metallic plate can be produced by a greatly simple method by which, after the punching out of the metallic plate and the molding of the resin mold, a predetermined portion of the metallic plate is cut and the semiconductor switching element is mounted, and it can contribute to also the reduction of the cost.

Abstract: A protective cover mounting apparatus for a hermetic compressor for removably mounting a protective cover to protect electrical parts disposed on a terminal portion of a hermetic compressor casing comprises a pair of first protrusions respectively formed on two facing sides of the protective cover for protecting electrical parts disposed on a terminal portion of a hermetic compressor casing, a second protrusion formed on a side that is removed from the casing when the protective cover is mounted on the casing, a clamp pivotably disposed on the casing and including a pressing portion and a holding portion formed to correspond to the first and second protrusions.

Abstract: A case for housing an electronic circuit board having a case body formed with an opening and a sealing member for sealing the opening, wherein one of the case body and the sealing member is formed with one fastening member composed of an elastically deformable leg and a projection continuous therewith for enabling attachment of the sealing member to the case body by engagement of the fastening member with a prescribed region of the other. The projection is continuous with the leg and has a first surface formed to contact the prescribed region at a prescribe angle and a second surface continuous with the first surface and formed parallel to the prescribed region. With this, molding error can be tolerated and stress owing to volumetric variation produced by temperature change or to vibration can be readily coped with. Moreover, it is possible to prevent release of the engagement of the projection with the prescribed region, and thus to prevent separation of the sealing member from the case body.

Abstract: A door-use feed protector and a circuit assembly arranging structure using the same is provided. The door-use feed protector includes a protector body to accommodate a circuit assembly in a curved state in a door and a circuit assembly holding portion provided on an outer wall of the protector body so as to hold a portion of the circuit assembly outside the protector body. The circuit assembly holding portion may be an auxiliary protector. The auxiliary protector has at least a pair of holding walls facing each other. The holding wall is provided with a resilient holding piece or an engagable cover for preventing the circuit assembly from protruding. The circuit assembly is introduced in the protector body of the door-use feed protector, and a portion of the circuit assembly led out of the protector body is held by the circuit assembly holding portion and is arranged toward an auxiliary in the door.

Abstract: In the power distributor using a semiconductor switching element, input terminals 10I and 10L, output terminals 12A-12J, connected to the element, and more preferably, the board terminals 30 and 32, are structured by a metallic plate, and arranged on the same plane perpendicular to the plate thickness. The metallic plate can be integrated by the resin mold, thereby the structure can be greatly simplified. The metallic plate can be produced by a greatly simple method by which, after the punching out of the metallic plate and the molding of the resin mold, a predetermined portion of the metallic plate is cut and the semiconductor switching element is mounted, and it can contribute to also the reduction of the cost.

Abstract: The invention is related to methods and apparatus for inserting and/or holding electronic modules into equipment racks. For example, the electronic module can correspond to a power supply, and the equipment rack can correspond to a shelf for a standardized equipment rack. One embodiment includes a handle that is movable from a first position to a second position. A power supply is inserted into an equipment rack with a handle in a first position. The first position of the handle permits partial insertion of the power supply, thereby permitting electrical connection of pre-charge contacts. The handle is then moved to a second position, thereby pulling in the power supply and permitting regular power contacts to make an electrical connection. One embodiment further includes a tongue and groove arrangement to prevent vertical displacement of an electronic module.

Abstract: An assembly that mounts components to a module box is disclosed. Large components, such as capacitors, can take up appreciable amounts space on a circuit board. If these components are mounted to the module box, there will be more surfaces on the circuit for other components. In an illustrated embodiment, three capacitors are mounted to a module box using three separate plastic cradles. The module can be made of plastic or metal as necessary. The component cradles are preferably secured to the box by an interference fit between the hole and posts. Alternate methods to secure the component cradles include snap fit, heat staking or epoxy. The component cradles also provide alignment of the pins that extend through the circuit that will eventually be mounted on the box. The pins are electrically fixed to the circuit board by either solder or press fit means.

Abstract: A power controller generally includes a first switching device and a first bus bar mounted to the first switching device such that wiring may enter and exit the power controller. The first bus bar may have a face plate that extends at least partially above opposed side plates of the power controller and a mounting plate in electrical contact with the first switching device.

Abstract: A power-supply wiring device, which protects electric wires between a sliding and fixed structures, and absorbs wire length change by sliding motion of the sliding structure, and a harness layout structure with the power-supply wiring device are provided. The power-supply wiring device includes a first case 5 for receiving a wire harness 4 folded into a U-shape, a moving portion 7, a harness holding member 8 disposed rotatably at the moving portion 7, a second case 44 receiving the harness holding member 8 freely to be swung. In the harness layout structure, the first case 5 and the second case 44 are mounted respectively on the sliding structure and the fixed structure, and the harness holding member 8 connects between the fixed and sliding structures.

Abstract: A computer system employing redundant power distribution. A computer system includes power distribution boards arranged to distribute power such that the computer system may continue to operate if there is any single point of power failure. The computer system includes a first plurality of circuit boards, a plurality of switch circuit boards and a first and second power distribution board. The plurality of switch circuit boards may be coupled to the first plurality of circuit boards and may convey address and data information between the first plurality of circuit boards. The first power distribution board and the second power distribution board may be coupled to independently distribute power to each of the first plurality of circuit boards. At least two of the first plurality of circuit boards may be coupled to independently distribute power to each of the plurality of switch circuit boards.

Abstract: A protection device for an electrical component that has a protective housing and a terminal cap. The protective housing has a base with a contact hole therethrough for accommodating an electrical terminal pin. A projecting perimeter wall extends from the base. A sleeve resides within the perimeter wall, and a terminal cap is captured between the sleeve and the protective housing. A method of assembling a battery and an electrical component with such a protection device is also disclosed.

Abstract: An elongated and hollow wiring track includes a rectangular plastic cover whose edges carry female hinge members and a U-shaped plastic channel having a flat outer surface, two inclined side walls that extend in a common direction at 45-degrees away from the flat outer surface, and two perpendicular side walls that extend in a common direction away from the inclined side walls perpendicular to the flat outer surface. Each of the perpendicular side walls carries a male hinge member that releasably mates with a female hinge member when the U-shaped channel is pivotally mounted onto the cover to form an internal wire-cavity. A DIN rail mounted on the outer surface of the U-shaped channel. A terminal strip is mounted on an exterior surface of each of the inclined side walls. The number N of metal busses are mounted on each of the terminal strips. A plurality of terminal-groups are mounted on each of the terminal strips.

Abstract: A computer motherboard selectively uses various memories in the light of a dummy card. The computer motherboard comprises a serial resistor, and a first slot and a second slot for holding various memories, respectively. Various memories can be configured on the motherboard without additional settings by means of predefined dummy card or/and rearranging the location of the serial resistor.

Abstract: A power distribution cabinet for containing electrical components and associated circuitry includes a panel adapted to provide an interface for the distribution of power from a high voltage source to low voltage applications. The panel includes several outlet receptacle housings, wherein the housings are each L-shaped and disposed contiguously in a vertical series on the front of the cabinet each at a 45-degree angle. Collateral damage to the power distribution center can be minimized wherein a damaged single housing can be replaced without disturbing the remaining housings or outlet receptacles, thereby maintaining the operability of the power distribution center. The housings each comprise several weep slots disposed at the hydraulically lowest point of each of the housings so that condensation that forms on an inner surface of the housing is collected and drained through the weep slots thereby preventing any moisture damage to the interior circuitry and electrical components.

Abstract: For use with a rack for supporting a first battery having first terminals and a second battery having second terminals, an interlock kit comprising a partition mount and a partition. The partition mount is couplable to the rack proximate the first battery and the second battery. The partition is coupled to the partition mount and translatable between a first battery access position that allows access to ends of the first terminals and obstructs access to the second terminals and a second battery access position that allows access to ends of the second terminals and obstructs access to the first terminals.

Abstract: A portable, reusable apparatus for providing temporary electrical service is disclosed. The apparatus includes a support structure with at least one service line, a meter base, and a breaker box secured thereto. One or more electrical receptacles may also be secured to the support structure. The apparatus may be configured to alternately connect to overhead and underground power supplies. A remote power supply apparatus is also disclosed. The remote power supply apparatus includes an electrical cord that is connectable to temporary electrical service. Systems that include these apparatus and methods of using the apparatus are also disclosed.

Abstract: A 6,000 to 10,800 ampere rated modular power system for converting alternating current to direct current is provided. The modular power system includes a modular power bay having a plurality of rectifiers for converting alternating current to direct current and a modular power distribution assembly having a plurality of fuses for distributing the direct current. The modular power bay and the modular power distribution assembly include front access doors for ease of maintenance. The modular power system is also low profile for ease of maintenance. The modular design allows for expansion in the converting and delivery portions of the system.

Abstract: Circuits are provided for increasing the reliability of an iontophoretic drug delivery system. Such circuits detect the failure of a crystal oscillator of the system, the failure of a voltage reference of the system, or the impending failure of a battery power source of the system.

Abstract: The hybrid high-voltage substation comprises firstly equipment implemented using metal-clad technology and constituted by at least one single or double busbar set, and secondly equipment implemented using conventional air-insulated technology so as to form feeders disposed in bays approximately perpendicular to said busbar set. The substation incorporates at least one air-insulated backup line approximately parallel to the busbar set and performing the function of backup phase to enable the substation to operate in “degraded” manner.

Abstract: An electric power distributor mountable on a motor vehicle for distributing power from a power source installed in the motor vehicle to a plurality of electric load units equipped in the vehicle has a plurality of semiconductor operative elements which are incorporated in a power supply circuit from the power source to the electric load units; a control circuit board incorporated with a control circuit for controlling an operation of the semiconductor operative elements; a housing for encasing the semiconductor operative elements and the control circuit board therein; and a heat releasing member provided on an outer surface of the housing to release heat transferred from the semiconductor operative elements outside of the housing.

Abstract: A compact-sized gas insulated switchgear accommodates components and devices constituting its line side unit into one container. Arresters and cable heads are accommodated in a lower section of the line side unit, and a circle connecting centers of respective arresters and cable heads arranged therein is concentric with a cylindrical section of the line side unit container.

Abstract: A medium voltage controller for electrical equipment, such as motors, transformers, reactors, and capacitors, having an arc resistant cabinet, swaged internal electrical connections, a one-piece self-aligning withdrawable finger cluster, a pull-out instrument compartment, a load discharge device, cast fuse holders, disconnect switch, a switch illuminator, low power current transformers, and an optical temperature measuring system. The pull-out instrument compartment includes a sliding rack to which a hinged instrument mounting panel is attached. The mounting panel slides out of the compartment and swings away from the opening in the cabinet, allowing access to the cabinet internals.

Abstract: The present invention relates to a breaker apparatus and breaker unit. The breaker apparatus comprises a breaker unit including a power supply/cut-off breaker part, a power connecting part, a first unit connecting part, a ground connecting part and a second unit connecting part and further comprises a breaker unit mounting board including a mating power connecting part, a mating ground connecting part, a first connection mediating part and a second connection mediating part. This breaker apparatus is capable of constituting a power distributing apparatus with a necessary but minimized construction, and of extending the breaker unit in a minimum unit according to necessity. In addition, with this breaker apparatus, parts can be used in common irrespective of a change of a ground system, and further, can be replaced in the hot-line condition without cutting off the power supply to a system.

Abstract: A chip assembly (162) with integrated power distribution between an integrated circuit chip (164) and a section of wafer interposer (166) is disclosed. The wafer interposer section (166) has first (80, 82) and second (86, 88) sets of contact pads that are electrically and mechanically coupled to first and second sets of contact pads of the integrated circuit chip (164). The wafer interposer section (166) has first (32) and second (36) supply voltage terminals that are respectively coupled to the first (80, 82) and second (86, 88) sets of contact pads of the wafer interposer section (166) that provide first and second supply voltages to the first and second sets of contact pads of the integrated circuit chip (164), thereby integrating power distribution between the integrated circuit chip (164) and the wafer interposer section (166).

Abstract: A large number of switching devices, for example contactors, can be supplied with power and information in particular in switchgear cabinets. A multilayer supply board includes a large number of suitable recesses with fingers which form contacts. The recesses preferably form an array with m rows and n columns in the supply board. The multilayer supply board preferably includes at least a number of layers of electrically conductive boards which are insulated from one another.

Abstract: An electric power distributor mountable on a motor vehicle for distributing power from a power source installed in the motor vehicle to a plurality of electric load units equipped in the vehicle has a plurality of semiconductor operative elements which are incorporated in a power supply circuit from the power source to the electric load units; a control circuit board incorporated with a control circuit for controlling an operation of the semiconductor operative elements; a housing for encasing the semiconductor operative elements and the control circuit board therein; and a heat releasing member provided on an outer surface of the housing to release heat transferred from the semiconductor operative elements outside of the housing.

Abstract: A sliding barrier for an electrical enclosure for selectively providing or prohibiting access to electrical conductors behind the barrier. The barrier includes upper and lower tracks and two substantially identically configured slidable panels. The panels are provided with operators for manually sliding the panels between open and closed positions. The panels are also provided with an interference interlock that inhibits unintentional opening of the panels and gapping between the panels when closed.

Abstract: A power interconnection system comprising a plurality of z-axis compliant connectors passing power and ground signals between a first circuit board to a second circuit board is disclosed. The interconnection system provides for an extremely low impedance through a broad range of frequencies and allows for large amounts of current to pass from one substrate to the next either statically or dynamically. The interconnection system may be located close to the die or may be further away depending upon the system requirements. The interconnection may also be used to take up mechanical tolerances between the two substrates while providing a low impedance. interconnect.

Abstract: An access panel located in a motor control center for inspecting and accessing various bus connections, for example, a particular phase vertical to horizontal bus connection or a horizontal bus bar splice connection. The surface of the panel includes one or more apertures positioned to align with one or more bus bar connections. Covers are pivotally mounted along the surface of the panel adjacent to the apertures in order to access and isolate the bus connections within the motor control center. The cover is mounted to the surface of the panel such that it can be moveable between open and closed positions.

Abstract: The invention relates to a system and a method for assembly and maintenance of connection modules (3) in high-voltage switchgear (1). According to the invention assembly and maintenance are performed in a service bay (6) in the vicinity of the switchgear. Modules (3a) to be assembled, replaced or repaired are transported between the service bay (6) and its site (2a) in the switchgear area by a service vehicle (4). The vehicle (4), connection modules (3) and the positions for their base plates (2) are thus so adapted to each other that the service vehicle (4) can move about in the switchgear area while the switchgear is in operation. A special aspect of the invention is the custom-design of the service vehicle (4) specifically for its purpose.

Abstract: The power source holds a plurality of parallel oriented power modules in a holder-case. The holder-case is provided with cover-casings on both sides and intermediate-casings between them. Holder ribs project from the insides of cover-casings and from both sides of intermediate-casings for arranging power modules in a plurality of rows and retaining them in fixed positions. Cover-casings on both sides and intermediate-casings are joined to sandwich and hold the plurality of rows of power modules in fixed positions via the holder ribs.

Abstract: A power delivery system for providing energy to sustain a plasma in a plasma processing chamber configured for processing substrates. The power delivery system includes a metallic enclosure having an input port, a first output port, a second output port, and a third output port. There is further included a power distribution box disposed within the enclosure. The power distribution box includes a first AC input port for receiving AC power from external of the metallic enclosure through the input port and for providing AC power to AC loads external to the metallic enclosure via the first output port. There is also included a DC power supply electrically coupled to the power distribution box. The DC power supply is configured to receive the AC power from the power distribution box and to output DC power. The DC power supply is disposed within the metallic enclosure. The DC power is supplied to DC loads external of the metallic enclosure via the second output port.

Abstract: A weather resistant self-contained surface-mounted 12 volt direct current electrical control unit for small boats comprising as the major components; a weather resistant enclosure in two parts (flanged enclosure & cover), a plurality of surface mounted fuse holders, and a plurality of switches together with the necessary screws, gaskets, wire, tie wraps, and connectors to complete the relevant electrical circuits and to secure the component parts. The enclosure is configured to allow the passage, through an opening, of power cables from an external power supply into the device and conversely the passage outwards of individual electrical leads to be connected to the various devices and accessories to be controlled with the invention. The invention is assembled using the weather-resistant surface-mountable electrical enclosure that has a weather resistant cover plate retained in place with screws or other fasteners, and having the switches and fuse holders mounted on the cover plate.

Abstract: An apparatus comprising a hand truck and a releasably attachable unit including an electric meter, a circuit breaker panel box and an electrical receptable which may be electrically coupled. The hand truck has a rectangular frame connected to a handle means for controlling its movement at the top end and at the other end a base plate that projects forwardly and a pair of braces that extend rearwardly from the frame. The pair of braces provide housing for a wheel assembly comprising heavy duty wheels on an axle. The braces and wheel assembly allow for facilitating movement over rough terrain and stairways. The apparatus includes a lockbar for security and to prevent movement.

Abstract: To prevent lightning from destroying equipment in a housing structure, a shield structure is built within the housing structure for enclosing electrical conductors that may allow surge currents to be routed into the housing structure. The shielding structure is constructed of ferrous or non-ferrous metal and preferably of the same material as that of the ground plane of the housing structure to which the electrical conductors are mounted. A terminal cover strip for enhancing efficient grounding is also disclosed.

Abstract: A line deadend structure and method for using the same are disclosed in which three phase power lines can be attached to a single pole at different elevational locations on the pole. The lines can be attached to switches and can each be arranged to extend downward along the single pole at various differently spaced locations about the periphery/circumference of the single pole. The wires can then be connected to an electrical mechanism, such as a circuit breaker or transformer, which is located on the ground or at a lower level than the original wire connection location on the single pole. Tap mechanisms and/or fuse mechanisms can also be located on the single pole and in connection with the three phase lines to provide electrical access to the lines and/or fusing operations, respectively.