I am adding a sub panel for my wood shop. Can I use #6/3 wg wire for a 100 amp Workshop Panel?
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Answers:
Riley,
While Jose is closer to right than anybody else, but what you have to do is calculate the load you expect to put on that sub-feeder panel at any one time.
Your main concern is to size the breaker for the wire feeding the 100 amp panel. If that breaker is sized to protect the #6 wire, that's all the protection you need to be perfectly safe. You can use a 100 amp panel, and you may have to, to provide enough breakers to put all the circuits you need in your shop, but if you know you will never use more than 40 continuous amps at any one time, you are golden, and the #6 is big enough.
But, if you expect to go above the capacity of the breaker and wire feeding the 100 amp panel, you will need larger wire.
no sir by electrical code u must use either #4 or #2for any 100 amp service whether main or sub
I've attached a link that gives line capacity for various wire sizes. Keep in mind that part of the capacity for the wire is how far the wire is run from the lighting panel. If you are running a wire several hundred feet, you will have to increase the guage of the wire to account for this. Also it depends upon if the wire is enclosed in conduit.
This link should give you the information you are looking for.
the ampacity of wiring for 100 amp is #3 or #2 awg using type twh wires.
no you have to use#2 awg and the ground could be #3.
help me here guys 310.15(B)(6) says what for 100 amp,,is it 2,,3,,4
the answer is 4
use the links for wire sizes and voltage drop
,,distance makes a difference, but I put 50 feet and a 6 will carry 60 amps with a 2.4% drop which I think is acceptable
#6 wire is good for 60 to 80 amps. What you need is (2) #2 wires they will be your 2 hots. A # 4 wire or # 2 wire, that will be your neutral, and a #4 wire. That will be your ground.
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