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It depends. As @bib implies in a comment, it depends where you are. It depends what type of wire you are using - it must be exterior rated for both water and sunlight exposure. It may depend what type of structure it's on (many things that are fine in the US on a "residence" are strictly forbidden in "commercial work.") In some cases the residential work ...


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They need to be in conduit for 2 reasons. First, exposed wiring needs to be protected from damage and stapling bare wire to the siding would not qualify. Burying it at least 24" would qualify, but any portion above that would still need to have some sort of damage protection (conduit). Second, exterior boxes, receptacles, and entry/exit points need to be ...


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IMO in a commercial setting all receptacles, switches, jacks & the like should be installed at what is called counter height (about 48" to the top of the box). This not only satisfies ADA laws, but it keeps it all above most furniture, in sight for quick inventory, easy access, easy repair and upgrades. The days of crawling under desks and counters to ...



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