What do I need to run a 100 amp hobby welder?

Question

I have a 100 amp 110 volt hobby welder. Do I need an outlet just for the welder and what amp breaker. Also can I power it with a 2000 watt generator. Thanks.

Answer 1

hehe 20 amp circuit. OK! Look if an electrician really knows what he is doing he would go to the nameplate. Find the duty cycle rating on the nameplate. Go to Article 630 in the NEC. Use the duty cycle to find the circuit ampacity needed by multiplication of the code book demand factor by the nameplate amperage. The same would apply to the circuit breaker size. So why dont you just put it on a 100 amp breaker, with a plug and call it a day. Also dont try to use the generator it will not work for it.

Answer 2

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RE:
What do I need to run a 100 amp hobby welder?
I have a 100 amp 110 volt hobby welder. Do I need an outlet just for the welder and what amp breaker. Also can I power it with a 2000 watt generator. Thanks.

Answer 3

I am electrician . a welder with transformer is an inductive load . it runs on ac so safe to assume its power factor is 0.5 this means only half the current pulled from supply will turn into useful work if for example your small welder is rated at 2kw then you most likely need a 4kw generator to supply the required amps to give your 2kw heat at welding stick but due to losses in transformer 5kva is more likely to be needed. A 80 amp 2.5 stick generator friendly invertor welder may have better power factor conversion and be able to do same job with possibly 3.5 kva size generator

Answer 4

There should be a label on the back of the welder that has an amp rating. This will tell you how many amps it pulls at max. If you multiply the amps x voltage = watts consumed
20 amps x 110 volts = 2200 watts so as long as the amp rating on the label is less than 15 amps that generator will work (but at its max). As far as plugging it in, it should be on its. own circuit. I hope this helps

Answer 5

if your positive its a 100 amp 110 volt then you use omhs law.amps x volts = watts. so that would be 11000 watts.breaker size has to be the same as the amps your pulling never smaller or you will trip the breaker.very important to use the correct wire size that can handle 100 amps safely without ruining the insulation.yes it needs to be on its own dedicated circuit.if your using this welder for three hours or more at one time you should use 125amp breaker and wire that can handle 125amps.

Answer 6

You will need at least a 20 amp circuit to prevent your breaker tripping. And yes a 2000 watt generator should be able to power it.

Make sure nothing else is on that circuit or the breaker will probably trip.

Answer 7

To be honest your not suppose to weld a truck frame, as there made from heat treated high carbon steel, if you have to pass any type of DOT inspection and they see it you will fail, and the fact you have to ask this question about welding applications tells me you shouldent attempt it anyway. a proffesional welder would already know this information and would warn you of the implications.

Answer 8

I have no real clue but can't wait to see the answers.