RocknT
Member
just an example
http://amarillo.craigslist.org/tls/3402709502.html
http://amarillo.craigslist.org/tls/3402709502.html
master cyl. mounting
- Thread starter Johnny
- Start date
meangreen
Active Member
The power supply in any electric Arc Welder is nothing more than a variable output transformer. Regardless of the input voltage, the output is regulated according to the settings on the welder. For example, at 90 amps the output of a common MIG welder is 18 volts. A piece of steel does not know who or what is applying the heat/amperage that is making it melt. Welding is simply the process of melting the base metal and a filler rod (or wire) so that they run together. Whether the input voltage is 110, 220, 0r industrial 3-phase 440, the end result is the same if it is done correctly. There are some "cheapo 110 mig" welders that are junk and I wouldn't trust them either because their settings are not reliable. On the other hand, a good quality welder, regardless of input voltage, will give good results if the user knows what he's doing. The difference is the Duty Cycle - the higher the input voltage, the higher the Duty Cycle rating. My Firepower FP-135 has a 40% Duty Cycle @ 90 amps and now costs about $600. A good quality 220 volt MIG will usually have a Duty Cycle of 70%+ @ 90 amps, but will cost more than twice as much.
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