Fef electricity

Welder Extension Cord/wiring

We need to wire the shop so we can move the welder safely; the "ghetto wiring" we have now keeps shorting out and will likely melt the insulation, as we are using wire far too thin for what the welder is rated for.

A first step would be making an extension cord for the welder.

Three considerations should be specified before making extension cord:

• Wire type (meaning gauge and strands per cord)
• Wire length
• Plugs at end

Wire length Brianna determined 35'. This has to do with placement of wall outlet, and overall shop size. We want the welder to be able to go throughout most of the shop, without needing another extension cord or a creative wiring solution.

Wire type This is a bit more difficult. We have 2 conflicting ways of determining what the diameter should be:

• Ampacity- Welder is rated for 40A, so according to the AWG recommendations a minimum of 10ga is required. However, this assumes we have insulation rated for 90 degrees C. If we can't find this, 8 ga should do.
• Wire type on welder- assuming the welder engineers knew what they were doing, we should mimic what gauge they put on the welder plug. From what Brianna measured on the millermatic 200 welder, the diameter of the wire is ~.15", which appears to be 6ga or 7ga.

Plug The plugs should have the female end matching the welders we currently have. Both have different plugs, so perhaps we can get one of each plug.