Quick Need Help on 220v wiring
09-06-2008, 07:00 PM
#11
whoa. this thread is ugly.
there is no such thing as 2phase
there is no such thing or at least i have never seen a "220 cord"
a 220v welder will not run on a 110v circuit unless it is labeled to run on that voltage.
often the white wire is used as a hot wire. 3 wire cords have a green, white and black. if you need 2 hots and a green it is ok to use the white as a hot.
green is always ground.
lets say your new welder has a 50amp cord end on it and your wall outlet is a 30 amp. it is ok to swap out the cord end on the welder to a 30amp unit and plug it into a 30amp outlet. it will work fine till you crank up the welder but then it will pop the breaker if you weld at too high of a setting for too long.
what could be unsafe is pluging a welder with a 30amp cord and cord end into a 50 amp outlet.
swaping the cord end on your welder might be tricky. the wire might be too large to put into a 30 amp cord end. you could make an adapter that will take it from the large female plug to a small male plug with a short section of wire.
the important thing is to not have the breaker rating any higher than any part of the circuit. i have been running my 185amp tig on a 30 amp circuit since i got it. the only time it will pop a breaker is if i try welding aluminum and only if i try to weld for more than a few minutes at a time. aluminum takes a lot of heat.
back to your original question. if you have a 220v circuit and it has 3 wires then no it doesn't matter wich hot is wich. green it ground and both the white and black are hots.
there is no such thing as 2phase
there is no such thing or at least i have never seen a "220 cord"
a 220v welder will not run on a 110v circuit unless it is labeled to run on that voltage.
often the white wire is used as a hot wire. 3 wire cords have a green, white and black. if you need 2 hots and a green it is ok to use the white as a hot.
green is always ground.
lets say your new welder has a 50amp cord end on it and your wall outlet is a 30 amp. it is ok to swap out the cord end on the welder to a 30amp unit and plug it into a 30amp outlet. it will work fine till you crank up the welder but then it will pop the breaker if you weld at too high of a setting for too long.
what could be unsafe is pluging a welder with a 30amp cord and cord end into a 50 amp outlet.
swaping the cord end on your welder might be tricky. the wire might be too large to put into a 30 amp cord end. you could make an adapter that will take it from the large female plug to a small male plug with a short section of wire.
the important thing is to not have the breaker rating any higher than any part of the circuit. i have been running my 185amp tig on a 30 amp circuit since i got it. the only time it will pop a breaker is if i try welding aluminum and only if i try to weld for more than a few minutes at a time. aluminum takes a lot of heat.
back to your original question. if you have a 220v circuit and it has 3 wires then no it doesn't matter wich hot is wich. green it ground and both the white and black are hots.
Last edited by parish8; 09-06-2008 at 07:13 PM.
09-06-2008, 07:23 PM
#13
lol. Our ag teacher wrapped up a 220 plug with some black tape one time and it wasn't thick enough. He reached behind the welder to plug it in and it got him. You shoulda seen the look on his face. Luckily he was able to jerk his hand free after about 3 seconds. I don't think any of us would have been able to help as we were laughing too hard.
09-06-2008, 07:59 PM
#16
TECH Senior Member
Thread Starter
iTrader: (45)
Join Date: Jun 2005
Location: Hennessey, Oklahoma
Posts: 9,439
Likes: 0
Received 11 Likes
on
5 Posts
