Abstract: A plug lock locks the plug of an electrical appliance with a receptacle connected to a source of electrical power. The plug lock has wall plate having a pair of openings. A sheath has a pair of ends with a first passage extending between the two ends. An extension extends from the first end of the sheath, the extension being removably receivable within the second opening of the wall plate. A protrusion is disposed within the first passage of the sheath. A plug has a pair of ends and has a second extension extending from a third and a second passage extending between the two ends, the third end of the plug insertable into first passage at the sheath's second end and passable therethrough such that the second tab of the plug passes over the protrusion such that the protrusions prevent reverse passage of the plug through the first passage.

Abstract: A large structure enshrouder has a block collector that is secured to the top of the large structure, a plurality of outriggers secured to the top, below the block collector, and a plurality of booms secured to the legs of the large structure. A plurality of first cables are each secured to the shroud, pass through an outrigger, are secured to the block collector and terminate at a collector ring, the collector ring being connected to an appropriate pulling device for lifting the shroud. A plurality of second cables extend between the top and the outrigger for stability of the outrigger, while a plurality of third cables extend between the block collector and the outrigger for further stability. A plurality of fourth cables extend between the booms and the leg of the structure for stability of the booms, the booms also being anchored to the ground. A plurality of fifth cables and sixth cables extend between the outriggers and the booms for stability of the raised shroud during wind load conditions.