Miller welder

Huskers86 · Oct 30, 2012

I have a miller Bobcat welder generator that blows the breaker on the 110 outlet. I was wondering if anyone knew what the cause was it is a new outlet. Thanks

old · Oct 30, 2012

Could be a bad new outlet or the wires going to the outlet have a short some place. Time to trace the wires and look for bear spots and shorts

just another old geezer · Oct 30, 2012

Alos do not fail to consider a bad/ weak breaker. Its rare but I have had that happen too.

David G · Oct 30, 2012

What does the welder require for breaker size, and what is the breaker size?

A GFI or arc fault breaker can trip easier than a plain old breaker.

FBH44 · Oct 30, 2012

Modern circuit breakers trip under three basic conditions;
Too High Inrush Current - Not necessarily exceed the amp rating of the breaker, but if the breaker senses a wildly high inrush current, it has a magnetic sensor that trips. If you have a fault that is drawing very high fault current, it could cause the breaker to trip. Find the fault.
Too High of A Slow, Steady Current - If you are simply drawing too much current, say drawing 21 amps through a 20-amp breaker, the thermal part of the breaker will eventually get too warm, and trip. Remedy is to unplug everything else on that circuit, and see if that helps.
Worn Out Breaker - They get old, and eventually need replacing.

Huskers86 · Oct 30, 2012

Its a built into the plug breaker. Here"s a pic. The 20 amp above the plug doesn"t pop just the test/reset on the plug. I didn"t find any bare spots but need to check for continuity.

old · Oct 30, 2012

Years ago I worked on a lot of Miller stuff but that was back in the late 80s early 90s when I works as a Maintenance Electrician for Tracker Marine and did a lot of welder repair. Been a long time so just have a good educated guess as to the problem

Geoff NY · Oct 30, 2012

GFCI and arc fault, trip under different conditions than circuit breakers

barnE · Oct 30, 2012

Looks to me like a ground fault. Different situation. Was that factory or changed? Dave

barnE · Oct 30, 2012

Looks to me like a ground fault. Different situation. Was that factory or changed? Dave

Huskers86 · Oct 30, 2012

(quoted from post at 14:30:58 10/30/12) Looks to me like a ground fault. Different situation. Was that factory or changed? Dave

Not sure what you mean Dave. As far as I know nothing has been changed on the machine from factory except I put in the new 110 recepticle. I was careful to put the wires on it the same as the old plug in. I have continuity through the wires. I'm wondering if the outlet is just a bad one. The thing trips as quick as you push the rest like a dead short.

Miller welder

Huskers86

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old

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just another old geezer

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David G

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FBH44

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Huskers86

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old

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Geoff NY

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barnE

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