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I'm looking to purchase a used TIG welder and I only have a 220-volt 50-amp circuit available. I've narrowed my choices down to a Lincoln Precision TIG 225 or 275. Does it make any sense to pay extra for the 275 if I only have a 220-volt 50-amp circuit? Will that circuit limit the 275's output to basically the same as the 225?
Reply:I had a 275...
and you will need a 100 amp circuit to take advantage of its full capacity. Im not certain if youd be much further ahead if you are limited to a 50 amp circuit.Last edited by Lis2323; 07-26-2020 at 09:30 PM.:
Reply:While it's not a Lincoln, I ran my Syncrowave 250DX for 10 months on a 40 amp breaker and regularly ran it at 250-275A without a problem. I ran lines that were heavier, but didn't have a bigger breaker on hand when I got the 250DX and took forever to get around to replacing it.The rules for dedicated welder circuits are different than normal circuits and you can run a lot higher amperage and breakers. Depending on the conductors in the circuit you might be able to go to a bigger breaker than 50 and not have any issues, and still be within code.Check out my bench vise website: http://mivise.comMiller Syncrowave 250DXMillermatic 350P with XR AlumaProMiller Regency 200 with 22A feeder and Spoolmatic 3Hobart Champion EliteEverlast PowerTig 210EXT
Reply:
Originally Posted by UserJB
I'm looking to purchase a used TIG welder and I only have a 220-volt 50-amp circuit available. I've narrowed my choices down to a Lincoln Precision TIG 225 or 275. Does it make any sense to pay extra for the 275 if I only have a 220-volt 50-amp circuit? Will that circuit limit the 275's output to basically the same as the 225?
Reply:I think the lack of used Aspects is probably why the OP is looking at Precision TIGs...I can't get my head around the fact that my modern inverter does 200 amps on 240v 16 amp circuit, but the same amps from a transformer demands sometimes 4x as much input power. Although in practice, maybe it doesn't, going by what G-man says...
Reply:I had a Precision Tig 255 (model before the 275) hooked up to a 60 amp breaker by an electrician with no problems. Duty cycle comes into play with welders. The 275 is much more desirable than the 225 and has a lot more features. I've used a 225 and it was really frustrating because the thermal overload would kick in without notice and you'd have to let it cool off. After that it would kick in a lot sooner. I'd see if a 60 amp breaker could be installed or bigger wires and get the 275. Even if you were limited at the upper end you wouldn't have to worry about the welder constantly shutting off because it got too hot.
Reply:How much aluminum do u wanna weld? 225 doesnt have much duty cycle. Your comparing a work horse to a hobbyist welder
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Originally Posted by Welder Dave
I had a Precision Tig 255 (model before the 275) hooked up to a 60 amp breaker by an electrician with no problems. Duty cycle comes into play with welders. The 275 is much more desirable than the 225 and has a lot more features. I've used a 225 and it was really frustrating because the thermal overload would kick in without notice and you'd have to let it cool off. After that it would kick in a lot sooner. I'd see if a 60 amp breaker could be installed or bigger wires and get the 275. Even if you were limited at the upper end you wouldn't have to worry about the welder constantly shutting off because it got too hot.
Reply:I used the 225 on a job test welding wake towers for boats. I didn't get the job but was told I was the only one to finish all the welds on the mock up. I thought it would be good to finish the welds. I'm sure everyone else gave up on waiting forever for the machine to cool off.
Reply:The reason I buy certain used equipment is that if I need to sell it, I won't lose much in resale value. I'm just a hobbyist and I don't really know what I will eventually need. But if I can buy and later sell for the same price, then that's just like money in the bank. So I don't mind buying more powerful equipment then I need. I just don't know if the 275 will be so limited by the 50-amp circuit that it's not worth waiting for.My pole barn is wired for 100 amps. I never considered installing a 100-amp circuit. Maybe I should....I never considered the Lincoln Aspect 230 either. Is that a better welder then the Precision TIG 225? I just checked Craig's List nationwide and I did not find a single one for sale.
Reply:You could run off the 100 amp circuit to the pole barn but shouldn't be a big job to have a smaller breaker installed like a 60 or 80.
Reply:
Originally Posted by UserJB
I never considered the Lincoln Aspect 230 either. Is that a better welder then the Precision TIG 225? I just checked Craig's List nationwide and I did not find a single one for sale.
Reply:What would happen if I ran the Precision TIG 275 off a 50-amp circuit? Would it simply trip the breaker if I set the welder output too high?
Reply:I'm trying to understand the Spec sheet for the Precision TIG 275:Input Power208/230/460/1/60
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Originally Posted by UserJB
What would happen if I ran the Precision TIG 275 off a 50-amp circuit? Would it simply trip the breaker if I set the welder output too high?
Reply:
Originally Posted by UserJB
The next lines sayIs that simply a duty cycle for each output amperage?The next lines say:I can't figure that out. What does it mean?
Reply:
Originally Posted by Munkul
I think the lack of used Aspects is probably why the OP is looking at Precision TIGs...I can't get my head around the fact that my modern inverter does 200 amps on 240v 16 amp circuit.
Reply:
Originally Posted by Oscar
You still need approx 30A from a 240V outlet to produce 200A of welding current with a good inverter, so the breaker still needs to be sized accordingly. Wiring, as was mentioned, can be derated depending on the duty cycle of the machine. The lower the duty cycle, the smaller the wire is permitted to be de-rated, according to US NEC.This graph is a representation of such a case where a welder (my HTP 221) can consume up to 32A at full-bore, idle's at 1.3A. The curve depicts the wire size permitted, which is based on duty cycle, on the X-axis.
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发表于 2021-9-1 23:17:45