Originally Posted by jdc1040
I'm I realized my copier can draw a max of 1090W when copying! Since at the 80% rule I shouldn't stuff more than 1920W on a circuit, that doesn't leave much room for the other stuff going there. So, I was thinking about running its own 20A circuit, but what I'd like to do is run that circuit to one or two of the existing boxes and then have the top outlets be on the original circuit and the bottom outlets be on the new circuit. I'd label the covers so it was obvious which was which. I know I'll have to cut the tabs on the receptacles. Is there anything else that would be wrong with this? Is there anything in the code against running two cables next to each other through the same holes in the studs? Any problems with having two many cables in the boxes?
Thanks for your help.
You only need to worry about the 80% rule if you are going to be running continous loads = say 3-4 hours
As Jbfan said: run a 20a 240v breaker (required) with 12-3
There is no problem with running 20a 240v dual circuit run
This automatically puts the loads across opposite "phases" - neutral will not overheat
The problem used to be when single circuit breakers were used & placed on the same "phase"
Instead of the load blancing out across the neutral the load would ADD across the neutral
That's a simple explanation, but basically what happens
I run multiple 20a 240v dual circuits for my Chriustmas display at 90%+ without any problems
You can run 2 cables thru the same hole in a stud
Boxes are rated to hold a certain wmount of wires
How many depends upon th ebox size
If it s a blue plastic box the numbers are stamped on the inside of the box