JohnT Is this true or false? Look up the NEC section on welder supply wiring. I was surprised the first time I did. It's all about duty cycle. My compliant welding receptacle is 10ga from a 30 amp breaker to 50a socket. Using an old 230A Miller AC/DC stick machine. Usually at 90-110A. Short answer only: True or false??
MY RESPONSE:
Far as I know per the NEC when I practiced (may be changed by now no warranty) if you wire a branch circuit to feed a 50 Amp receptacle YOU NEED TO USE 50 AMP WIRE nottttttttt 12 Gauge nottttttttttt 10 Gauge. I believe that remains correct and if I (then and would still now) specify wiring a 50 amp receptacle IT WILL USE 50 AMP WIRE....... But use 12 Gauge if you like !!!!!!!!!!
No way would I wire a 50 amp receptacle with ONLY 12 gauge wire BUT I SUPPORT YOUR DECISION IF YOU WANT TO
I am NOT saying what the code says about what size wire is needed to power a welder that draws x amps and at what duty cycle THATS A DIFFERENT QUESTION ask the welder manufacturer not meeeeeeee lol
I AM SAYING unless code has changed the absolute MINIMUM wire to be used must have an ampacity of at least 125% of the circuits Maximum Continuous Current AND THAT HOLDS TURE FOR WELDERS OR ANY ELECTRIC LOADS
SOOOOOOO I SAY THE ABOVE IS TRUE and Im stickin to that unless and until Im shown the NEC says different
ONCE MORE feel free to wire YOUR welder with any size wire you like GO FOR IT regardless if it meets code or not ITS YOUR RISK YOUR CALL not mine not the NEC I am NOT telling you what to use, got it ????
There ya go. I say this is all TRUE but all are entitled to other opinions with all due respect
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