| 摘要 |
Switchboard apparatus includes means for supporting a bus bar including an elongated steel member having at least one bolt hole therethrough, the steel member being coated with an insulative material. A pair of formed washers of protective material are adapted to seat within the hole at opposite sides of the steel member. A member bolt fits within the washers and the hole, and a nut is adapted to engage with the bolt with a flat washer fitting between the bolt and one of the formed washers.
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