Abstract: A service entrance includes a post section, a service section, and a neutral bus disposed therebetween. The post section includes a first opening and a second opening, and is adapted to receive an electrical supply wire having a supply power wire and a supply neutral wire. The service section is disposed at the post section, and includes a third opening and a fourth opening, wherein the third opening is juxtaposed the first opening and the fourth opening is juxtaposed the second opening. The neutral bus, having a first end at the post section and a second end at the service section, is disposed passing through the second and fourth openings. The first end of the neutral bus is adapted to electrically connect with the supply neutral wire.

Abstract: A planar member for use in a support structure, the planar member includes a plurality of apertures which are positioned to align with a set of openings in a wall of the support structure, the set of openings corresponding to a predetermined configuration of electrical components to be installed into the support structure. The number of openings in the wall are larger than the plurality of apertures in the planar member.