dafourdoor

x2

DemonFD

Kind of, for normal lengths of a circuit in a garage/house, yes. But short run lengths can use thinner wire for higher amperage. Its not ideal, but if you are in a pinch and have the correct breaker, it can be done.

If you have just a 5' run from the breaker, you could run a 14awg wire and safely push 100amps at 120v. You could push 225 amps over that same wire size 5' long on a 240v setup.

Other side of it is true aswell, if you need to run a long distance from the breaker, you would need 3/0 for just 120v/100amps for a 200' run. And 1awg for 240v.

stowne78

This is true ^^

xzodiackillerx

maybe as a cord. not it a conduit or walls

DemonFD

What's the difference? The high amp/short run/thin wire won't get hot in the walls or as a cord as long as it is properly setup with a correct breaker and sufficient size.

stowne78

It will wear out the copper faster though. Over longer periods of use the copper will still heat up and break down faster, rendering it unsafe. I would only do that for "in a pinch" situation but not for a permenant one.

gc8dc95

There is a tap rule, but you would never go to those extremes. 100a on a 14awg is stupidity, no matter the length. Please refer to the National Electric Code 2011 (nfpa 70) for proper and safe installation techniques. Trust me, there is a reason you need an electrical license to do the work.

There are voltage drop formulas to calculate the correct size of wire over distance. And yes, techinically a 14awg is rated at more than 15a, assuming the insulation and termination points are rated to at least 90°C.

xzodiackillerx

leave it to the professionals when dealing with electric .. I have been an electrician for 10yrs and I have done repair work to homes that the owners thought they knew what they were doing..they were lucky nobody was killed. fire or electrocution !

get an electrician to do it for you.

0GearHeadDeals.com

I think a bigger issue is that you probably picked up the wrond welder for what you want to do.
Welding thin tubing is a PITA with a stock welder. You really wanted to get a mig welder. Even a fluxcore mig would have been a better choice. Plus the mig would be a 120V machine...

Any chance on returning what you got?