Gomez_Addams
New member
Let me jump on Rive's bandwagon here, since I was surprised and horrified to read domgreen's comment. It really is a safety document - life safety. Yours, your families or staff, your neighbors'... nor is it ridiculously conservative. Manufacturers want to make things cheaper, contractors want to use the least expensive conductors and connectors. Their industry does get heard in conference with NFPA. (I used to work closely with NFPA and Fire Marshals) So the compromise arrived at in the document represents the minimum that the fire guys think is safe.
The actual document is huge and hopeless for most people to follow. But DIY books in hardware stores will show you how to most basic (including 240) wiring, without bogging you down in code details. But you still need the basic references for things like minimum safe wire size (which varies by what the wires are inside, the ambient temperature, how many wires) all that stuff is in convenient tables for you. I never crack my 6 year old copy of the actual NEC, I look most things up in the handy $10 "Pocket Ref" (Thomas J. Glover) pocket reference book which every single reader should rush out and buy. You will thank me. And if that doesn't have it, I grab my NEC Handbook (McGraw-Hill) which _explains_ the NEC, but doesn't contain much of it. Every ten years or so, the NFPA has a big confab where they try to cut the things size down again, mostly successfully, eliminating shit about how to wire carbon arc street lamps and including new things about say, wiring PV panels.
Wire your shit right so you don't get electrocuted or burn your grow to the ground. To find out what is "right" - consult either the code or a book based on it. Some things you just don't do "git er done" jobs on without sooner or later paying a nasty price.
The actual document is huge and hopeless for most people to follow. But DIY books in hardware stores will show you how to most basic (including 240) wiring, without bogging you down in code details. But you still need the basic references for things like minimum safe wire size (which varies by what the wires are inside, the ambient temperature, how many wires) all that stuff is in convenient tables for you. I never crack my 6 year old copy of the actual NEC, I look most things up in the handy $10 "Pocket Ref" (Thomas J. Glover) pocket reference book which every single reader should rush out and buy. You will thank me. And if that doesn't have it, I grab my NEC Handbook (McGraw-Hill) which _explains_ the NEC, but doesn't contain much of it. Every ten years or so, the NFPA has a big confab where they try to cut the things size down again, mostly successfully, eliminating shit about how to wire carbon arc street lamps and including new things about say, wiring PV panels.
Wire your shit right so you don't get electrocuted or burn your grow to the ground. To find out what is "right" - consult either the code or a book based on it. Some things you just don't do "git er done" jobs on without sooner or later paying a nasty price.