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#28891 - 04/17/03 03:56 PM 50 or 60 amp plug & receptacle at 240 volt

I can find a 50 amp 240 volt single phase plug & receptacle (6-50R & 6-50P) which is a 2 pole 3 wire grounding. I need a similar plug & receptacle but rated at 60 amps. I can't find a 2 pole 3 wire grounding version, but I do see a 3 pole 4 wire grounding plug & receptacle (14-60R & 14-60P).
I assume this is used for 3 phase. Can I use that and just not wire up one of the poles? Or is there 2 pole 3 wire grounding plug & recetacle rated at 60 amps that I'm not finding?

#28892 - 04/17/03 04:27 PM Re: 50 or 60 amp plug & receptacle at 240 volt
Pat_McBride Offline
Super Handyman

Registered: 07/12/01
Posts: 2014
Loc: Abbotsford, BC, Canada
Do you want locking or non-locking?

For non-locking you need a 3-phase receptacle; for locking, which is probably the better choice, use a L6-60P and L6-60R.

My Code book, which is Canadian by the way, doesn't show a 60 Amp straight plug and receptacle either; probably because the 50 amp set is used for a range.

I'd go with the locking receptacle: because 60 Amps is a lot to break under load, and this can happen if the plug is accidentally removed under load. Ranges - most people turn them off before moving; 60 amp machines, such as welders, well maybe not - mistakes happen.

Hubbell makes some exotic 50, 60, and 100 Amp plugs and receptacles; because they're for special applications they're quite expensive.

And I'd be very careful about using a 3-phase plug. If somebody plugged in a 3-phase piece of equipment by mistake, and tried to energize it, you could blow the breaker and maybe even damage the equipment. 3-phase equipment just doesn't like 1-phase supplies; motors hum, whine, sniffle, and don't do anything but heat up and destroy themselves; process equipment generally tends to blow the breaker if it doesn't blow up first.
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