mopacman
Silver Member
I dont think 30 amp will work. If you stick the rod it will kick the breaker....Larry
Help getting welder wired in!
- Thread starter fishpick
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laurencen
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just a comment, I increase the size of wire allways, try loading any circuit even a electric kettle, it gets quite warm, heat costs money and some cases fire, if you have lots of 10ga wire, run it double or triple, at the very least, this way it will be safe, the welder will generate heat, lots at full duty cycle
sandman2234
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As I stated, my welder is set up on a 30 amp breaker. It runs everything below 150 amps with no problem. Ocasionally if I get busy and completely ignore the duty cycle, I might kick the breaker, but trust me, if it happened very often, I WOULD put a new breaker in, as I have a good friend who works for a Square D distibutor, and he would drop me off one with no problem. As far as sticking the rod and it popping the breaker, I would imagine the rod would be heated up beyond use if I left it stuck long enough to pop the breaker with my 1/8" 6011 rods.
For welding aluminum and anything over 150 amps, I usually just grab the Miller sitting right next to it, which is on a 100 amp breaker. It is rated at 105 amps max draw, but I have never managed to find anything that even gets close to needing it, including carbon arc, TIG welding 5/8" aluminum plate, or welding with 3/16" rod on 1.5" Stainless.
I just don't like to see fires in the walls of buildings or barns on fire. I for one would forgo the 50 amp on 10guage wire.
David from jax
For welding aluminum and anything over 150 amps, I usually just grab the Miller sitting right next to it, which is on a 100 amp breaker. It is rated at 105 amps max draw, but I have never managed to find anything that even gets close to needing it, including carbon arc, TIG welding 5/8" aluminum plate, or welding with 3/16" rod on 1.5" Stainless.
I just don't like to see fires in the walls of buildings or barns on fire. I for one would forgo the 50 amp on 10guage wire.
David from jax
gemini5362
Veteran Member
I checked at Lowes last night 10 feet of #6/2 with ground is $2.25 per foot so you are talking about 25.00 to get enough to wire it and not have to worryfishpick said:
OP
fishpick
Platinum Member
Fine #6 it is... Friggin strangers on the Internet caring about me and my barn...gemini5362 said:
50A breaker - #6 wire for 12' run - 50A plug... consider it done!
sandman2234
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Fishpick,
Your allright, I don't care what everybody said about you!!!
David from jax
Your allright, I don't care what everybody said about you!!!
David from jax
gizmo
Silver Member
Fishpick,
EE here. I wired my Miller 225 just as you intend to with 6AWG and a 50A receptacle. Its safe and can be used for other loads. The difference in price for smaller wire wasn't worth it to me.
FWIW, breakers have two trip mechanisms to guard against short circuit (magnetic trip) and overload (thermal trip). The short circuit let through rating really is in thousands of amps range.
I am currently working on an electrical coordination study for a major airport where let through currents are in the 200,000 amp range on a breaker that trips at 100A.
EE here. I wired my Miller 225 just as you intend to with 6AWG and a 50A receptacle. Its safe and can be used for other loads. The difference in price for smaller wire wasn't worth it to me.
FWIW, breakers have two trip mechanisms to guard against short circuit (magnetic trip) and overload (thermal trip). The short circuit let through rating really is in thousands of amps range.
I am currently working on an electrical coordination study for a major airport where let through currents are in the 200,000 amp range on a breaker that trips at 100A.
gemini5362
Veteran Member
fishpick we would rather help you spend your money on wire than worst case scenario have you write about your barn burning down. As others have pointed out, if you get something that needs more current you can just put a plug that fits that receptacle and you have a built in receptacle for up to 50 amps and all it has cost you in wire is the price of taking a couple of grandkids or whatever to mcdonalds
gemini5362
Veteran Member
gizmo said:
gizmo
Silver Member
gemini5362
There is a type of fuse called a "current Limiting" fuse that will clear the circuit in under one-half cycle and effectively limit the peak current to a lower value. In the residential circuit breaker world I don't believe there is a device with similar characteristics. Current limiting circuit breakers exist for industrial applications and their current limiting characteristics start to kick in at around 30,000 amps.
To answer your question though I am not sure what the minimum instantaneous trip time or current value is for a residential circuit breaker. If I were to guess it would be greater than 250 amps before clearing times dropped to near 1 cycle.
There is a type of fuse called a "current Limiting" fuse that will clear the circuit in under one-half cycle and effectively limit the peak current to a lower value. In the residential circuit breaker world I don't believe there is a device with similar characteristics. Current limiting circuit breakers exist for industrial applications and their current limiting characteristics start to kick in at around 30,000 amps.
To answer your question though I am not sure what the minimum instantaneous trip time or current value is for a residential circuit breaker. If I were to guess it would be greater than 250 amps before clearing times dropped to near 1 cycle.
