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Will a 800 watt generator have enough power to operate a 90 amp welder?
Wiki User
∙ 8y ago
No, unless you can set it low and can be assured that it wont use more than say 4000watts, the welder might momentarily use more power than what you set it to, it should not wreck the welder i would imagine unless it is a fancy mig welder or something, set the welder low you should be fine but for high end use she should be firing out 8 or 9kw so keep it low if you must.
Wiki User
∙ 12y ago
No, an 800 watt generator is not powerful enough to operate a 90 amp welder. A 90 amp welder typically requires a generator with a higher wattage capacity to ensure proper operation without overloading the generator.
Wiki User
∙ 14y agoYes as long as the generator has a 120 volt output it has the capacity of 36 amps. I = W/E. Current = 4400/120 = 36.6 amps. Your 120 volt receptacle on the generator will probably have a breaker rated at 15 amps to protect it. If your welder draws more than that it might trip the generator receptacle breaker when you use the welder. Check the nameplate on the welder to be sure the amperage is below 15 amps.
Wiki User
∙ 14y agoYou will have to check the amperage draw of the welder, it should be on the welder nameplate. Use this formula Amps = Watts / Volts. 5000/220 = 22.7 amps. If you welder draws more that this figure then the generator will overload.
Wiki User
∙ 8y agoNo. Not even close. Use Ohms law. 240 volts x 90 amps is 21,600 watts.
Wiki User
∙ 12y agono you would need at least 3500 watts
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