Re: Buying a extension cord for Lincoln 225 welder-what gaug

Posted by John T on October 28, 2021 at 07:50:00 from (174.205.1.179):

In Reply to: Buying a extension cord for Lincoln 225 welder-what gaug posted by andy r on October 27, 2021 at 20:01:10:

andy R HERES THE DEAL as I best recall from my days as a Power Distribution Engineer, but NO warranty mind you.

What you can

Get by with
What is the rated ampacity of the conductors used
What is the distance
At what welding current and for how long (duty cycle considerations) will you weld.

NOTE Duty cycle and diversity (such as say welding) can per the NEC (as I best recall) in certain limited cases
allow the use of smaller conductors

What amount of Line Voltage Drop is acceptable
Line Voltage Drop is a function of 1) Distance, 2) Current, 3) Wire Gauge

SAFETY NOTE the overcurrent protection device (fuse or breaker) is to protect the CONDUCTORS so if you use smaller wire size the breaker accordingly !!!!!!!!! IE if you use say 8 Gauge Wire use a 40 NOT 50 Amp Breaker !!!!!!!!!!!!

ALL MAKES A DIFFERENCE and is needed to answer your good question

THAT ALL BEING SAID

I have seen people who weld at low currents for short periods use 10 gauge AND IT WORKED (even if NOT NEC proper)

HOWEVER to A) Reduce line voltage drop B) Match the conductors ampacity to the outlets and plugs typically used C) Provide for the capacity just in case you needed to weld at higher currents for longer times with no worry D) To err on the side of safety

If I were the engineer who made the call I would (still subject to distance, IE may be even bigger) and I recommend using 6 Gauge 50 Amp rated Copper conductor extension cord EVEN IF SURE (subject to current and time) 10 Gauge or 8 BETTER would work PS I would NOT use 10 myself !!!!!!!!

As always, where fire and life safety are concerned you may want to at least consider consulting with professional engineers and electricians and the NEC versus what's posted here especially by lay persons and even myself being long retired and not up to date on the NEC

Many typical AC Buzz Box Welders use 50 amp rated plugs and outlets and if straight 240 (NO 120) you ONLY would need Two Hots plus a safety Equipment Grounding Conductor (which can be smaller then the tow hots)

There ya go its YOUR money YOUR choice YOUR risk to wire as you well please. All I can do is provide my recommendations so YOU make the call and please be safe

Best Wishes, God Bless Yall

John T Live in the RV at the Eureka casino parking Lot dry camped in Mesquite Nevada

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