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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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Wiring my new 220 stick welder in my shop
This past weekend I purchased a new AC/DC 220 volt stick welder for my
shop. I plan on installing a 50 amp breaker in my box and establish an outlet for the welder. I purchased 8/2 wire to make a long extension cord for the welder, but local hardware store only had 6/2 wire onhand that I purchased to go from fuse box to the outlet. First question.....is 8/2 (25 feet long) going to work as my "extension cord" for the welder, and (second question) is there any problem using 6/2 to run from my fuse panel to a outlet for the welder?? Since I did not have time to wire this up this past weekend, thought I should take advantage of the knowledge here before making a dumb mistake. Thanks for the input... ( I have all the correct outlets...and service into the shop..) Bruce |
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Wiring my new 220 stick welder in my shop
Sounds right to me, I believe that I wired my welder using 8 ga with
neutral (most welders have only three connections, not four), and a 50 amp breaker. I believe my welder manual recommended 8 ga wire. Going heavier wire (6 ga) is not a problem, just a little less voltage drop, so a slightly better installation. With the heavier wire, you could use a larger breaker if you wished, but I have never popped my 50 amp breaker. Richard Bruce wrote: This past weekend I purchased a new AC/DC 220 volt stick welder for my shop. I plan on installing a 50 amp breaker in my box and establish an outlet for the welder. I purchased 8/2 wire to make a long extension cord for the welder, but local hardware store only had 6/2 wire onhand that I purchased to go from fuse box to the outlet. First question.....is 8/2 (25 feet long) going to work as my "extension cord" for the welder, and (second question) is there any problem using 6/2 to run from my fuse panel to a outlet for the welder?? Since I did not have time to wire this up this past weekend, thought I should take advantage of the knowledge here before making a dumb mistake. Thanks for the input... ( I have all the correct outlets...and service into the shop..) Bruce |
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Wiring my new 220 stick welder in my shop
Thanks Richard.....And there is nothing quite as exciting as getting a
taste of 220 volts running through your body. Did that last night...next time I think I should pull the main breaker from my panel, and not wave my hands around when I am talking to my son......Welder works great, as does my new auto darkening helmet...... Bruce Richard Ferguson wrote in message ... Sounds right to me, I believe that I wired my welder using 8 ga with neutral (most welders have only three connections, not four), and a 50 amp breaker. I believe my welder manual recommended 8 ga wire. Going heavier wire (6 ga) is not a problem, just a little less voltage drop, so a slightly better installation. With the heavier wire, you could use a larger breaker if you wished, but I have never popped my 50 amp breaker. Richard Bruce wrote: This past weekend I purchased a new AC/DC 220 volt stick welder for my shop. I plan on installing a 50 amp breaker in my box and establish an outlet for the welder. I purchased 8/2 wire to make a long extension cord for the welder, but local hardware store only had 6/2 wire onhand that I purchased to go from fuse box to the outlet. First question.....is 8/2 (25 feet long) going to work as my "extension cord" for the welder, and (second question) is there any problem using 6/2 to run from my fuse panel to a outlet for the welder?? Since I did not have time to wire this up this past weekend, thought I should take advantage of the knowledge here before making a dumb mistake. Thanks for the input... ( I have all the correct outlets...and service into the shop..) Bruce |
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Wiring my new 220 stick welder in my shop
Richard Ferguson wrote in message ... I believe my welder manual recommended 8 ga wire. Going heavier wire (6 ga) is not a problem, just a little less voltage drop, so a slightly better installation. With the heavier wire, you could use a larger breaker if you wished, but I have never popped my 50 amp breaker. Just wondering - can you properly connect an applicance to a breaker rated larger than the applicance rating?? Laurie Forbes |
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Wiring my new 220 stick welder in my shop
Gary's comments are right on.
I noticed in the owner's manual to my welder that they recomended a maximum 100 amp breaker, so apparently anywhere in the 50 to 100 amp range would be fine. As Gary said, the breaker protects the wire, so a larger breaker requires larger wire, which only makes common sense. Richard Laurie Forbes wrote: Richard Ferguson wrote in message ... I believe my welder manual recommended 8 ga wire. Going heavier wire (6 ga) is not a problem, just a little less voltage drop, so a slightly better installation. With the heavier wire, you could use a larger breaker if you wished, but I have never popped my 50 amp breaker. Just wondering - can you properly connect an applicance to a breaker rated larger than the applicance rating?? Laurie Forbes |
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Wiring my new 220 stick welder in my shop
In article ,
says... On Wed, 16 Jul 2003 17:07:39 GMT, am (Laurie Forbes) wrote: Just wondering - can you properly connect an applicance to a breaker rated larger than the applicance rating?? Sure. The breaker is sized to protect the *wire* feeding the outlet. The appliance is on its own. It can have internal fuses, or not, as the appliance designer (and UL) chooses. For example, you can plug a radio or TV into an outlet protected by a 15 amp breaker, even though the radio may only draw a fraction of an amp. If the designer so chose, the radio would have an internal fuse to protect it, or it might be impedance protected in some other way to prevent it from drawing excessive current in case of an internal fault. Now if the appliance is *hard wired* into a dedicated circuit, the rules are a little different. The breaker still has to be sized to protect the wire, but it may also be required to be sized to protect the appliance. But as long as there's an outlet and a plug involved, that rule doesn't apply. AFAIK, NFPA 70 does not distinguish between permanently connected and plug-connected flexible cords for the purpose of determining the required overcurrent protection. See section 240-4. Ned Simmons |
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Wiring my new 220 stick welder in my shop
Sounds right to me, I believe that I wired my welder using 8 ga with neutral (most welders have only three connections, not four), and a 50 amp breaker. For the usual 20 percent duty-cycle welder, 8-2+G and a 50 amp breaker is appropriate. |
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