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Old 09-06-2010, 07:41 PM   #1
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requirements for 220v 180 amp welder


hey guys I'm new to the forum so if this threads in the wrong place just let me know. anyways I'm an apprentice welder and just bought a 220v max output 180 amp welder. a friend made the recommendation of using a dryer outlet for power but from my limited electrical knowledge it seems like that line couldn't handle 180amps. if I'm incorrect let me know, otherwise what all am I going to need to run this welder. thanks.

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Old 09-06-2010, 07:45 PM   #2
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requirements for 220v 180 amp welder


the welder draws some (input) current other then it's rated output. you need to consult the manufacturer's info for use - input voltage and amps. then write back and let us know what it is.

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Old 09-06-2010, 07:49 PM   #3
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requirements for 220v 180 amp welder


alright will do.
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Old 09-06-2010, 07:51 PM   #4
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requirements for 220v 180 amp welder


What Tim said. The 180A is the output. The input rating should be on a plate right on the welder.
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Old 09-06-2010, 08:16 PM   #5
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requirements for 220v 180 amp welder


okay on the spec list it said circuit breaker req. 25 amps. so as long as the line and the breaker are set to handle over 25 amp I'll be all good right?
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Old 09-06-2010, 08:26 PM   #6
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requirements for 220v 180 amp welder


If that is exactly what is says then yes.

If the welder has a 30A plug you can use 10/2 cable, or two #10 conductors with a #10 ground in conduit, and a two-pole 25A breaker to fit your panel.

If it is a 50A plug then I would install a 50A circuit using #6 wire.
There are special rules for welders, but IMO if you are installing this in a house you should follow conventional wiring rules. You never know what someone is going to plug in later.

My Miller 170 has a 50A cord and plug and I plug it right into my old stick welder receptacle.
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Old 09-06-2010, 09:10 PM   #7
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requirements for 220v 180 amp welder


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Originally Posted by primo View Post
hey guys I'm new to the forum so if this threads in the wrong place just let me know. anyways I'm an apprentice welder and just bought a 220v max output 180 amp welder. a friend made the recommendation of using a dryer outlet for power but from my limited electrical knowledge it seems like that line couldn't handle 180amps. if I'm incorrect let me know, otherwise what all am I going to need to run this welder. thanks.
Did the welder come with a plug and cord already installed? If so, what does the plug look like? A dryer plug has four prongs and provides 120 and 240 power. Most welders have a 50 amp plug that has three straight prongs and two are set at an angle and welders only need 240v power.
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Old 09-06-2010, 10:14 PM   #8
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requirements for 220v 180 amp welder


so if it does draw less than 30 amps should I use 10/2 wire or 8/3? and what are the different applications with 2 wire or 3?
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Old 09-06-2010, 10:28 PM   #9
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requirements for 220v 180 amp welder


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so if it does draw less than 30 amps should I use 10/2 wire or 8/3? and what are the different applications with 2 wire or 3?
You have to wire the circuit to match the connectors and use the correct size wire. You first have to determine which plugs you will use. If the welder has a 50 amp plug you have to install a 50 amp receptacle and if you install a 50 amp receptacle you have to use #6 copper.
Look closely at the plug on the welder.
http://www.nooutage.com/nema_configu...Configurations
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Old 09-07-2010, 01:22 AM   #10
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requirements for 220v 180 amp welder


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Originally Posted by Speedy Petey View Post
If that is exactly what is says then yes.

If the welder has a 30A plug you can use 10/2 cable, or two #10 conductors with a #10 ground in conduit, and a two-pole 25A breaker to fit your panel.

If it is a 50A plug then I would install a 50A circuit using #6 wire.
There are special rules for welders, but IMO if you are installing this in a house you should follow conventional wiring rules. You never know what someone is going to plug in later.

My Miller 170 has a 50A cord and plug and I plug it right into my old stick welder receptacle.
That one thing about welder receptales I am very carefull with that and normally I wired with 16mm˛ { #6 AWG } with 50 amp breaker or fuse.

But I have older welder a Lincoln 250 A AC/DC stick welder but it was specal order to confreaged to work on 208 volt supply { I do run it near full capaity with hevaier matearls } but I have other welder wirefeeder type but it is a commercal verison so it can conferated on 480 volt supply.

Merci.
Marc
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Old 09-07-2010, 04:17 AM   #11
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requirements for 220v 180 amp welder


I have a 30 amp recep (6-30R) connected with #10 wire and 30 amp breaker that I plug my Millermatic 175 welder (spec'ed to pull max ~25 amps) into - the welder has the differing common welder plug. I did not want to change the recep as I have other tools that plug directly into it as is. A 25' conversion extension cord handles the connector mating and lets me wheel the welder anywhere I need it in my shop. Do a Google search of welder conversion cord or similar, and you will find ready-made conversion/extension cables to buy or instructions on how to make your own.

Last edited by vsheetz; 09-07-2010 at 04:19 AM.
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Old 09-07-2010, 09:00 AM   #12
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requirements for 220v 180 amp welder


So, what was your reason for asking help if you didn't follow the suggestions? What you did was just fine.
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Old 09-07-2010, 09:05 AM   #13
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requirements for 220v 180 amp welder


so I understand all wiring has to match the circuit and line but if I run an extension cord does it also need to be 10/2 or a higher gauge?
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Old 09-07-2010, 12:22 PM   #14
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requirements for 220v 180 amp welder


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Originally Posted by primo View Post
so I understand all wiring has to match the circuit and line but if I run an extension cord does it also need to be 10/2 or a higher gauge?
vsheetz slipped in a comment that I thought was from the OP.
primo, you never told us about the plug that came on the welder. If it is a 240 volt 30 amp plug you will have to install a 30 amp receptacle wired with 10-2/wg. I'm assuming your welder has a 6-30P. White wire will need to be marked as black using tape at both ends then you can connect it to a two pole 25 or 30 amp breaker. If you make an extension cord, it will have to be #10 too.
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Old 09-07-2010, 09:05 PM   #15
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requirements for 220v 180 amp welder


ok so the welder has no receptacle on it. 230v 25 amp input. I will need to purchase a 30 amp plug correct?

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