Running multiple 220 circuits.
#1
05-25-16, 10:53 AM
Running multiple 220 circuits.
Hi, I want to run 3 separate 220 circuits, for a welder, plasma cutter and a heater. They need a 50 amp breaker each. I want to use 6 gauge wire and run three separate circuits. They are all on the same wall within 20 feet of each other. My question is, can I run them through the same conduit, if i can what size, and can they share the ground wire?
#2
05-25-16, 11:43 AM
can I run them through the same conduit, if i can what size, and can they share the ground wire?
They are all on the same wall within 20 feet of each other.
Tech note: Nominal voltage will be 240 (or 208). No 220v anymore.
#3
05-25-16, 12:39 PM
Join Date: Mar 2006
Location: Wet side of Washington state.
Posts: 16,321
Received 38 Upvotes
on
30 Posts
Carefully read the instructions for both the welder and the plasma cutter. Since these machines have a "duty cycle" they often cannot be used continuously and will allow for a significantly smaller conductor size than would normally be used with a 50 ampere circuit breaker.
As an example, my Hobart welder is just fine with #10 conductors on a 50 ampere circuit breaker.
Just how big is the heater in question, kW rating?
As an example, my Hobart welder is just fine with #10 conductors on a 50 ampere circuit breaker.
Just how big is the heater in question, kW rating?
