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Old 12-09-2015, 08:56 PM
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Wiring in my new welder ?

Hey gang I got a quick question. I have a new Lincoln 210 MP welder and it can use either 110/240v. But here's the kicker. The only receptacle the adapter fits into, is a 50amp. Now supposedly the machine only goes up to 27amps. Now does that mean I can use a 30amp breaker for it, or do i need to use a 50amp? Any help would be greatly appreciated!

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Old 12-09-2015, 09:46 PM
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30 amp double pole breaker..#10/3 w/grd wire and yes the receptacle that you have.. Run on 220 if you can..

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Old 12-09-2015, 10:22 PM
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Sweet! Thanks Sam
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Old 12-10-2015, 07:46 PM
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Ok. Now I just got a reply from Lincoln Electric, and this is what they sent me. Hopefully you can see the attachment.
Attached Files
File Type: pdf Lincoln 210 MP.pdf (45.5 KB, 626 views)
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Old 12-10-2015, 08:20 PM
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On my Lincoln SP175 I use a 30amp breaker and a 50amp plug without problems at all. Even with 20 feet of extension cord I don't have issues.
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Old 12-10-2015, 09:50 PM
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elect code ?

The Lincoln chart lists a 40 amp breaker for # 12 wire, The last time I looked at a code book 20 amp breaker for # 12 wire... # 10 wire for 30 amps and # 8 for a 50 amp. Long runs require larger wire sizes.
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Old 12-10-2015, 10:00 PM
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I know, right Tim! So since my run is a little over 100' but less than 125' I'm going to use the 40a breaker with a 8ga wire. Plus I'm wiring in my new compressor as well, and its a 24 amp motor, so that one I'll use a 30a breaker with 10ga wire. Sound about right?
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Old 12-11-2015, 09:43 PM
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wire sizes

The shop I built in California was about 140 ft from the house main panel . I checked the code, did the calculations and ran the minimum wire size allowed. If I would have been 5 ft farther away would have had to upsize the wire. If someone was welding and the air compressor kicked on the lights would dim. don't scrimp on wire size for a long distance. And I usually go up one size for the conduit. vs conduit wire fill calculations. Our power company requires a larger size for the conduit from the transformer to the new meter than what the code book says is allowed.
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Old 12-12-2015, 01:20 AM
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Well I've bumped up the conduit to a 1". The air compressor is going to run a 30a breaker, and I'll be running #8ga wire for that one, and for the welder, I'll be using the 40a breaker with #6ga wire. The runs are hopefully going to be less that 100, but in case I bought about 120' of each strand. How's that sound?
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Old 12-12-2015, 06:07 AM
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sounds good.

wire lube helps in pulling wire when you have multiple strands. and I like to leave a pull cord in with the wire in case you ever want to add something else. The main feed from the transformer to a new meter, my power company requires the larger radius elbows than an electrician normally uses.
When I built the 40 X 120 ft shop where my son now lives I wanted 3 phase power, but was quoted $ 10 K, The property was rezoned from agriculture to light industrial , annexed into the city, and now the neighbor is having 3 phase installed by the city, I ran the milling machine with a converter but only had 2/3 of the rated motor power, couldn't cut at full speed. When we put in a 3 phase farm agriculture irrigation system they had a cost sharing if multiple users would hook up to the 3 new transformers
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Old 12-25-2015, 02:21 AM
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Well it's all done! Did'nt have to use any lube, just a lot of choice words But the 1" conduit helped out alot. The 3 6 and 8ga wire went decently smooth inside, but when they kink, holy ****balls it sucks!!!
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