we have a 250dx that's on dual 40amps. after about 30minutes or so of welding with it, the damn breakers start to trip repeatedly so we're thinking we need to up the breaker size as it's probably overheating them.

what size to go to?

oh and the welder is brand new with about 2 hours of weld time in on it.

 

Id go with a 60 or 70 amp preferably 70,but make sure you have the proper gauge wire ran to use a bigger breaker also

 

yeah, we had the wiring done professionally. Just we immediately lost the manual after the purchase ( ) and the electrician just made a guess with us at breaker size as he's never had to hook up a welder this big himself.

guess we were about 30 amps too small

 

if you look on the welder on the back there is a samll black sticker that tells how many amp draw it will pull at full bore .

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18C1CYA &raquo;</TD></TR><TR><TD CLASS="quote">if you look on the welder on the back there is a samll black sticker that tells how many amp draw it will pull at full bore .</TD></TR></TABLE>

just took a glance at it. we have no sticker lol. I see where there's some tape residue so apparently one was on it and came off.

 

My 250 is 98amps at 230v. I have a 100 amp breaker on it, and it'll even pop that at a short amount of time at full load. I had to weld some really big aluminum stuff and had it all the way up.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony1 &raquo;</TD></TR><TR><TD CLASS="quote">My 250 is 98amps at 230v. I have a 100 amp breaker on it, and it'll even pop that at a short amount of time at full load. I had to weld some really big aluminum stuff and had it all the way up. </TD></TR></TABLE>

hmm, well, I dont forsee us welding the titanic back together but when we get going we go pretty steady...

We have a 60 on the way, think we should just up it like 80 or so??

oh hey, while I've got someone else with a 250 on here....where do you set yours at when you're doing aluminum?? We literally have it as-is from the box with the selector arm just going up/down. (middle selection I guess).

I honestly have no clue what the symbols mean, just got it set so that it "sounds" right and we can lay down penny stacks.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by stackz &raquo;</TD></TR><TR><TD CLASS="quote">
We have a 60 on the way, think we should just up it like 80 or so??</TD></TR></TABLE>

CAREFUL, not only does the breaker have to be the right size, but the wire feeding it. If it's a 40A breaker your wiring might be VERY undersized for that breaker. Double check before you change it.

 

If you up the breaker size you have to be sure that the wiring going from the breaker box to the plug can handle it. Its likely that thr wiring is undersized.

John

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1fastVX &raquo;</TD></TR><TR><TD CLASS="quote">If you up the breaker size you have to be sure that the wiring going from the breaker box to the plug can handle it. Its likely that thr wiring is undersized.

John</TD></TR></TABLE>

yeah, I thought of this and called the electrician earlier. He said the wiring is good to 120amp current draw.

after that I sorta questioned him on why he only did a 40amp breaker and his reply was....well, you'd rather the breaker trip then fry the machine right?

lol

 

Just put a 100amp breaker on it and be done with it. You don't want to have to deal with the breaker popping while you're welding.

 

You shoulda got a inverter