Power wires and cables shall be insulated adequately where they pass into or out of electrical compartments. Wall penetrations require double sealing with flameproof putty and compression glands: Fundamental Principle : Your safest distribution box is the one that's not in the hazardous area at all. Always ask: "Does this need to be here?" before installing. Grounding in explosion areas isn't optional -. The argument given was that you couldn't remove an intermediate box if there was a cable running through it, but how often does a circuit need modification, and even if it does, the person removing the box should be capable of jointing the cable, or, as there'd be remedial making good to be done. Mobile equipment shall not run over power conductors, nor shall loads be dragged over power conductors, unless the conductors are properly bridged or protected. 15, a junction box is required whenever: You cannot: Common Misunderstanding If a cable passes through without splicing or terminating, you may not need to install a junction box — but you must still protect the conductors according to the wiring method rules. 0 IGO-ported license (CC BY-NC-ND 3. You are free to share this work (copy, distribute and transmit) under the following conditions: you must give credit to the ITER Organization, you cannot use the work. There is a 10-2 (w/ground) UF cable which runs from my main panel in the basement, through the joists in the crawlspace, and exits the house here: Here's the outdoors side, where it connects to the disconnect (which is right out of view at the top of the picture): It doesn't look like whoever did.
