I've done quite a bit of normal indoor house wiring, and I know by code you need to use a clamp (either built-in or a metal connector) to securely hold the cable into the box.
Now, I'm using conduit (RNC) for wiring my hot tub outside. I've never worked with conduit before, but it looks pretty straightforward. My question is whether I need a separate clamp to anchor the wires to the box, or if having the conduit clamped is sufficient. I can't find anything that says the latter; but I can't find anything at the store that resembles a clamp for conduit.
The wires are held in pretty securely in the conduit, of course. But I don't know if this will pass code and if not, what to do.
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