Sparky75
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Safe to run 100 watts per amp. I would do one 15 and 20 but if you but even better two 20s
Correct, I have a 8x8 room 1200 watts of led and I have both lights on the 20 amp than I leave the 15 amp for my fans and occasionally add a light in that room.
Amp everything out that you listed and want to potentially add later and go from there. Guessing will only cost you money in the end. Nice thing about electronics is pulling the requirements is pretty simple. Just add it all up and give yourself the proper headroom. 15 amp circuits will always be cheaper then 20's wire wise. All depends on how long the runs are gonna be.
From everything you listed you will need at least 2 circuits at a min.
Why not run 1 240V line (using no.6 wire) to a sub panel? That should be fine for 50 Amps. From the sub panel you could wire up (1) 20A and (2) 15A breakers to separate outlets.
I am running from a subpanel in the basement. I will look and see how big that subpanel is or if I can just run another subpanel down in the basement from the main power supply. That would be best so the power is already there for any extra little things in the basement. Thanks.
Not so much with ac But with dc voltage there's a big drop in voltage if the wire's not big enough. I was an electrician for 30+ years 2 circuits 15 amp circuits is ample. The only reason to go to the added expense of a sub panel is to shorten the runs for large wires #10-#8-#6 and so forth not to keep #14 wire short. I'd run a 3 conductor #14 with a common neutral on 2 -15 amp circuits to a 4-11/16" junction box from there I'd drop down with 2- #14/2 cabtire / extension cords. with a 4x4" box and 2 receptacles in each box. Something like this crude map.My two cents, depends on the length of any potential circuit being contemplated. As load, and length conspire to add voltage drop for any respectively sized circuit. As you add load, voltage will go down and increase the amperage necessary to accomplish the same work. Two 20 amp circuits (size #awg12), each 50 feet long will work fine with 15 amps load and only 2.8 volts drop. If those were 12 amps load, #awg14 wire circuits, the drop would increase somewhat as would the amperage available to use. Hope that helps you decide what will work best for you. Also keep in mind utilizing GFI'S and that aspect for personnel protection around any water potentially being introduced.
With that method, you legally (NEC) cannot control individuality each of those two circuits...Not so much with ac But with dc voltage there's a big drop in voltage if the wire's not big enough. I was an electrician for 30+ years 2 circuits 15 amp circuits is ample. The only reason to go to the added expense of a sub panel is to shorten the runs for large wires #10-#8-#6 and so forth not to keep #14 wire short. I'd run a 3 conductor #14 with a common neutral on 2 -15 amp circuits to a 4-11/16" junction box from there I'd drop down with 2- #14/2 cabtire / extension cords. with a 4x4" box and 2 receptacles in each box. Something like this crude map.
I'm not sure what you're getting at ... 2 - single pole 15 amp breakers are separately controlled, I also worked in ship yards for many years and that was our go to method for maneuverable power supply. I'm not talking about a permanent receptacle mounted on studs or a 2pole 15 amp breaker with a removable bar between them. Not much different than a kitchen counter plug with 2 circuits in on one receptacle but on single pole breakers. IBEW 213.With that method, you legally (NEC) cannot control individuality each of those two circuits...
PS, not to start a pissing match, but I’ve got 40+ years IBEW/NECA experience, retired Electrical contractor.
So here’s three initial problems with what you’re thinking and advising others without any experience (demonstrated electrical) to do:I'm not sure what you're getting at ... 2 - single pole 15 amp breakers are separately controlled, I also worked in ship yards for many years and that was our go to method for maneuverable power supply. I'm not talking about a permanent receptacle mounted on studs or a 2pole 15 amp breaker with a removable bar between them. Not much different than a kitchen counter plug with 2 circuits in on one receptacle but on single pole breakers. IBEW 213.
I know shits changed over the past few years, I was out of construction & a maintenance electrician in a hospital for 10 years so new code has changed since then but the practicality of my wiring methods are sound code or no code. Check the steamship inspectors guide for confirmation lol,
Okay I won't dispute that its in black and white but wouldn't a ground fault receptacle solve that by putting them in the 4x4 box? Are there still groundfault receptacles even allowed anymore in your country? They're still here in Canada. One reason I'm not wiring anymore, too many new rules and that part of your code book is all new to me.So here’s three initial problems with what you’re thinking and advising others without any experience (demonstrated electrical) to do:
1. NEC article 210.4; concerns multi-wire branch circuits (three wire, shared neutral per your sketch) All ungrounded conductors must be simultaneously disconnected by means of a permanent handle tie, ie in this case two pole c/b with permanent handle tie. No individual circuit control.
2. NEC article 210.8, GFI protection, this states the necessity for ground fault protection almost everywhere in a house and especially garage, and out buildings, anywhere ungrounded tools may be used. Same problem, handle tie required on two pole c/b.
3. Article 210.12 Arc-fault protection, this states all 15 and 20 amp circuits in a home to have either arc fault or combination GFI/AFCI breaker protection. There are no currently manufactured breakers being made that can do this for a multi-wire branch circuit as they all break at the supply the neutral, which isn’t possible with a three wire branch circuit, you’d have to use a two pole GFI/AFCI breaker, again loosing individual control of either proposed circuit. These excerpts were taken from the 2014 edition of the NEC and these same sections may be “googled” for anyone to reference. We can dispute the nuances in a pm if you desire. Dan
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