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Someone has just told me that you can get ready made plug in wiring systems for use in raised floors. What are they like? are the used much? who makes them? are they expensive?

In the uk except for soom special situations the IEE Reg require that all exposed metal work is bonded to the earth system. This to ensure that no voltage difference can be present between any exposed conductive surfaces. If the structure is outside it would also require an RCD.

I'm an electrician in UK and have been asked to supply some power distibution equipment for use in an office that may be used in the States. What voltages would be used to supply computers and other office equipment? If it is wired in conduit what wire colors would be used? In UK we use a...