Breaker size for 255EXT?

[Seshan]

Just wondering what breaker size I need for the 255EXT, The site says max inrush @ 220v is 33.6A, So should I get a 40A breaker?

Thanks

[Kempy]

Just wondering what breaker size I need for the 255EXT, The site says max inrush @ 220v is 33.6A, So should I get a 40A breaker?

Thanks

I have mine hooked up to a 30A breaker and have never blown it yet I have welded at 220A to 250A for 3 to at least 4 minutes the odd time. A 40A can't hurt.

[DaveO]

lcome, Seshan! Are you getting a 255?!

[Seshan]

I have mine hooked up to a 30A breaker and have never blown it yet I have welded at 220A to 250A for 3 to at least 4 minutes the odd time. A 40A can't hurt.

Perfect, thanks. I'll get a 40 amp just to be safe.

lcome, Seshan! Are you getting a 255?!

Yes I'm planning on it

[Rivets]

Just wondering what breaker size I need for the 255EXT, The site says max inrush @ 220v is 33.6A, So should I get a 40A breaker?

Thanks

If you do, make sure your cable is #8.

Cheers,
rivets

[TheGary]

If you do, make sure your cable is #8.

Cheers,
rivets

Yes, the breaker is there to protect the wire ,not the machine. So do not use a bigger breaker than what the wire is rated for. I have my welder outlets wired for 50 amps and breakers to match. That way I can plug any single phase welder and plasma in that I have. there is no problem plugging in a machine that only draws 35 amps into a 50 amp circuit. I think the 255 comes with a 50 amp cord end on it or no plug at all and the purchaser needs to buy a plug.

[everlastsupport]

If it's not a lot more money, I would go with a 50 amp. Like Gary said it is there to protect the wire, the unit will protect itself. But a 50 amp will allow bigger machines down the road if needed.

[Seshan]

I don't think I will need bigger machine anytime soon, and when I do I'll probably be living somewhere else (aka not my parents house ).

I was also thinking that since we (north america) are actually on 240v that the machine would draw less amps, about 3.05A less, (if I did my math right), so about 30A inrush.

[everlastsupport]

I don't think I will need bigger machine anytime soon, and when I do I'll probably be living somewhere else (aka not my parents house ).

I was also thinking that since we (north america) are actually on 240v that the machine would draw less amps, about 3.05A less, (if I did my math right), so about 30A inrush.

Yea, if not your house, no reason to improve it too much. But a 50 would allow of a plasma cutter and maybe air compressor as well.

[res0r9lm]

If its anything like US actual voltage is more like 230-235v. Not all 8ga copper wire is equal it seems. I've seen some rated at 40 amps and some 55 amps.

[Blaze]

There is a thread where I asked all the same questions with a lot of good explainations for wire size and breakers. Just search for my posts. The guys helped me a lot.