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Old 12-09-2010, 07:48 PM   #1
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Receptical Question


I am possibly getting a 120a Mig from Harbor Freight which requires a NEMA L6-30 or equivalent plug. When I was at Home Depot I seen a L6-30p and a L6-30r. I had also seen a 6-30p and 6-30r, not with the L of course. The L6-30's are rated for 30a/240v and the plain 6-30's are rated for the same except I believe it was 250v. Do I HAVE to install the L or can I install the regular 6-30's?

Now keep in mind I am aware I have to run a 30a 240v fuse and all that, I just need the info about the plug and receptacle. Thanks.

Last edited by ccross; 12-09-2010 at 08:05 PM.
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Old 12-09-2010, 07:53 PM   #2
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Your receptacle will need to match the plug on the welder.
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Old 12-09-2010, 08:03 PM   #3
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L is for locking as in twistlock.
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Old 12-09-2010, 08:07 PM   #4
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Quote:
Originally Posted by oleguy74 View Post
L is for locking as in twistlock.
I figured that the L stood for locking, but is it absolutely necessary? The reason why I ask is because normal 6-30's are $10.00 cheaper than the L's.
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Old 12-09-2010, 08:09 PM   #5
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saftey issue.don't want it un pluged while you are welding.
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Old 12-09-2010, 08:17 PM   #6
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Quote:
Originally Posted by oleguy74 View Post
saftey issue.don't want it un pluged while you are welding.
Gotcha, thanks!
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Old 12-09-2010, 08:29 PM   #7
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If the welder is supplied with an L6-30P YOU WILL NEED AN L6-30R receptacle. An L6-30P will NOT fit a 6-30R receptacle.
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Old 12-09-2010, 10:06 PM   #8
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Quote:
Originally Posted by brric View Post
If the welder is supplied with an L6-30P YOU WILL NEED AN L6-30R receptacle. An L6-30P will NOT fit a 6-30R receptacle.

Yes, I am aware of this.
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Old 12-10-2010, 07:15 AM   #9
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Quote:
Originally Posted by oleguy74 View Post
saftey issue.don't want it un pluged while you are welding.
I'd say this is more of a convenience issue than a safety issue.
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Old 12-10-2010, 10:40 AM   #10
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the main issue is you dont want the machine to accadently get un pluged.
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