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#201
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Re: HOW TO - make a 220V extension cord
Tony
If you only need 220v (2 hots + ground) you can use 3 wire SO cord, It would be a good idea to mark the white wire with paint, tape or shrink tubing, although it is often not done. As always Green is Ground the World around . . . NEVER use the green wire to carry current. if you need 110 /220 use 4 wire and use the white for a neutral. If you used the green and the wire failed, you would end up with 110 on the case of your tool(s)!!!!! It could ruin you whole day. I don't have the particulars in front of me, but it is possible to used undersized conductors for welders and other equipment that doesn't operate continuously at full load (duty cycle) if you go with the continuous ratings, however you cant go wrong
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-- fred Lincoln 180C MIG |
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#202
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Re: HOW TO - make a 220V extension cord
Yeah. I could have used 10-3, but I already had the hardware and it was all 4-wire. Since I wanted to split off a 110v outlet, I figured I'd go ahead with 4-wire, so I would have a common AND a ground. I figured a little extra safety on a extension cord wouldn't hurt.
I think your point about the white as common is important for folks to know, as long as they understand that on a 3-wire cable for 220v the white IS HOT, but on a 4-wire cable it is the common. The green is ground ALWAYS. Recoloring the HOT WHITE is always a good idea. Make it black or red. Your last point is also a good one, and a cost saver. You can run a dedicated circuit for particular tools/appliances using smaller than normal cabling, but it has to be a dedicated circuit to pass code. I don't know what the particulars are either, right off-hand. My dedicated welder circuit is #6 THHN on a 60 Amp breaker right now, but I may move up to a 100 amp breaker to allow me to use the full potential of my Maxtron 300. My welder's manual indicates that is appropriate sized cable for my welder. Otherwise I'd be running 1/0 copper cable. Very expensive! I'll still have to check with the county to make sure my set up meets code, though. Be safe. Do things right. Last edited by thenrie; 11-18-2009 at 08:28 PM. |
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#203
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Re: HOW TO - make a 220V extension cord
Quote:
Last edited by yesindeed; 01-05-2010 at 02:20 AM. |
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#204
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Re: HOW TO - make a 220V extension cord
I have one plasma on a CNC machine, and a Hobart Mig at my welding table. Neither operate at the same time....I fabricated a heavy steel box out of 1/8" steel.....put in two receptacles for single phase, 240 volt, 50 Amp use. The receptacles are recessed for protection.....the cord is a 4 wire, #10awg S/O type cable, 50' long that plugs into a receptacle at my main panel.
Jim |
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#205
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Re: HOW TO - make a 220V extension cord
Nice construction on that electrical box extension cord
__________________
Own farm:Harris oxyacy torch, lincoln 225, stick,Century 135GL mig, Hypertherm PowerMax 45 Plasma Cutter Co-Own CNC shop:Miller :1251 plasma cutter, MaxStar 700 TIG/Stick, & XMT 456 Multiprocess Welder.& 2 Hypertherm HPR260's Plasma Cutter |
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#206
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Re: HOW TO - make a 220V extension cord
Hey guys.. I know, old thread!
I have a Hobart 220 Welder and it has the 6-50P. My garage has a pre-existing 220V 50AMP circuit (even marked "Welder" in the fuse box).. however it is a 10-50R. Can I do this with a 10-50P on one end... and a 6-50R on the other? Just hook up same color to same color? Thanks guys! Just wanted to check before I blow myself up. |
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#207
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Re: HOW TO - make a 220V extension cord
Quote:
Basically on the 6-50's you've got the two straight blades that are the two 120 volt hots and the round or inverted U that is the ground. On the 10-50 you've got the two angled blades generally labeled X & Y that are the two 120 volt hots and the the straight up n down blade labeled W that is the nuetral/ground. Match those up and you're good to go. Really what you're doing is making an adapter instead modifying the garage receptacle or the welders' plug and yes is very doable. Play color blind and mate the hots to the hots and ground to the nuetral/ground and you've got it made. A volt/ohm meter would help you verify a steap at a time as you go. Have fun.
__________________
"The things that will destroy America are prosperity at any price, peace at any price, safety first instead of duty first, the love of soft living and the get rich quick theory of life." -Theodore Roosevelt |
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#208
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Re: HOW TO - make a 220V extension cord
Thanks for your reply Sandy! Just finished wiring up my 50' cord.. plugged it in.. flipped on the Hobart and it fired right up! Now on to welding!
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#209
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Re: HOW TO - make a 220V extension cord
Sandy, did you say neutral/ground??????????????
![]() ![]() ![]() I am vindicated ![]() ![]() ![]() GROUND IT TO NEUTRAL ![]()
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"Any day above ground is a good day"
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#210
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Re: HOW TO - make a 220V extension cord
Hi, just a quick question on making a extension cord for my 220 welder to a 220 plug on a generator. The 8k Gen has a 4 prong twist lock receptacle and the welder has a standard 3 prong plug. I've read through this thread and just wanna make sure I get it right. I know what plug/receptacle and wire. Just want to make sure of wiring. I know the two hots, big/small blade on welder, will go to BL/R on gen. My question is should the Grnd from the welder go to Grng or W on the Gen?
Thanks Dave http://i120.photobucket.com/albums/o...eping/plug.jpg |
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#211
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Re: HOW TO - make a 220V extension cord
Hey dave,
http://i210.photobucket.com/albums/b...4-20to6-50.jpg and the end result http://i210.photobucket.com/albums/b...s/IMG_7753.jpg
__________________
Ed Conley http://www.screamingbroccoli.net/ Passport Plus & Spool gun TA 185 Lincoln SP135 Plus- (Gone to a good home) Miller 125c Plasma 120v O/A set SO 2020 bender Beer in the fridge |
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#212
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Re: HOW TO - make a 220V extension cord
Quote:
Thanks, but I need to know where the grnd wire from the welder end receptacle goes to at the gen end plug. Does it go to the grnd or the w(neut) pin at the gen plug. I read thru this thead and it kinda says either. Just want to know. Thanks |
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#213
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Re: HOW TO - make a 220V extension cord
Quote:
![]() The first pic has the wiring . Green= Ground to Ground. As I wrote on the Pic the cord you buy will only have 3 wires and they will be Black, White and Green. In This case you use the Black for Hot and the White for Hot Green=Ground is Ground.
__________________
Ed Conley http://www.screamingbroccoli.net/ Passport Plus & Spool gun TA 185 Lincoln SP135 Plus- (Gone to a good home) Miller 125c Plasma 120v O/A set SO 2020 bender Beer in the fridge |
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#214
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Re: HOW TO - make a 220V extension cord
Quote:
![]() Thanks Dave |
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#215
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Re: HOW TO - make a 220V extension cord
just throwing this out there 10 for 30amp 8 for 40amp 6 for 50amp per code
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#216
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Re: HOW TO - make a 220V extension cord
over 100 feet would be a concern for voltage drop then you would have to up size the wire
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#217
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Re: HOW TO - make a 220V extension cord
found this on harbor freight
it just says 30amp but im assuming its 10 gauge probably gonna pick it up http://www.harborfreight.com/general...ord-66122.html |
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#218
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Re: HOW TO - make a 220V extension cord
note that it is probably 110v connectors at 30 amp, and wont work without changing connectors. check HD for a 10 gage extension with reg (15a) ends, think it might be a bit cheaper, probably better quality wire too . . .
__________________
-- fred Lincoln 180C MIG |
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