Wiring Tips for a Metal Building Workshop | Hunker The metal frame must be electrically grounded together. This means that all the metal parts of the building should be conductive. The corners of the building can be tied to the earth by running a separate ground rod at each corner of the building. This will ensure a direct path to ground for any lightening strikes. Electrical wiring question (house) - Home Jan 12, 2014The steel frame would also be connected to the earth system as well. There is a requirement outlining where cables can and can't be run in walls. Also any cables that run horizontally through studs must be protected by a safety switch (but most new houses have all circuits on safety switches these days anyway).