Electrical Question From Brian About 220 Volt Wiring
Question: Can I use 6awg THHN wire to run a welder with 220 volts rated at 70 amps max? With a run of 50 feet in 3/4 conduit.
Electrical question about: 220 Volt Wiring
Received from a Homeowner in Sallis, Ms
[ad#block]Question: Can I use 6awg THHN wire to run a welder with 220 volts rated at 70 amps max? With a run of 50 feet in 3/4 conduit.
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I just looked at my electrical current ratings protect book and i found that # 6 wire is only rated for 65 amps. So according to this #4 is the correct size because it will protect your equipment and not melt or burn so quick. # 4 wire is rated for 85 amps that’s plenty of overcurrent protection.
Hey Darome, Thanks for your input. This was one of those questions that got posted without my reply, and I love seeing other get involved here. I double checked my NEC Table 310-16 and you are correct.
Thanks again Darome, visit anytime. I have a backlog of several hundred questions here in the blog that are not even posted, and another 2000+ in another database, so I can use all the help I can get. If you are an electrician and want to participate then Please Do! If you have a website for your own business I will be more than happy to link to it as you help with any of these questions.