More 220V receptacle questions

[RedBaron]

I read the 220v outlet in the garage questions but did not find the answer I was looking for. The installation of the outlet in the wall is straightforward (Hot/Hot/Ground/Neutral). My compressor, a 220/60/1 Sears, has only two hots and the ground. ( No Neutral wire) So my question is - I know I can use a 3-pole 3-wire plug from the compressor. I have 10/3 in the wall and 10/2 for the compressor. Can I just wire the outlet in the wall to not use the neutral wire?

I want to run a plug on the compressor for a cleaner install. I'm just puzzled about the neutral/ground wire (or lack of neutral) from the compressor...

 

[chet]

The neutral is for 120V power. Hence thats why stoves and dryiers use 4 wires.

 

[bmwpower]

Do not use the neutral wire, instead put a wirenut on the end and stuff it back in the box. Do the same thing at the panel - disconnect and wirenut the wire.

 

[RedBaron]

I can do this....I also got info that i need to use stranded and not solid core wire @ the compressor. I think I have a handle on this now....Thanks to all...and this site in general

 

[Charles (in GA)]

I can do this....I also got info that i need to use stranded and not solid core wire @ the compressor. I think I have a handle on this now....Thanks to all...and this site in general

That really should not matter. In theory the stranded wire will carry more current than solid wire (supposedly the electrons flow on the surface of the wire, and stranded wire has more surface).

It most likely has to do with a recommendation that you use 75C degree wire (THHN) which is commonly found stranded. Much of the 10/3 Romex solid house wire that was produced in the past was 60C degree wire, however, most new Romex, is 75C rated.

The NEC requires wire used in building installations that is 8 gauge or heavier to be stranded, but not 10 gauge or lighter.

Charles

 

[rockwithjason]

Make sure you have a good equipment ground. Don't run the compressor without a ground or you may be in for a nasty suprise one day. You can use a 3 pole plug just make sure that the ground is properly connected

 

[RedBaron]

After finding out that all I really needed was a two pole grounded instead of a three pole three prong non-grounded outlet and receptacle, methinks I learned a bit about 220 wiring today

I had an electrical engineer school me on the stranded vs solid wire current theory.....And she's a bunch smarter than I was....Until now...

Bwahahahahaha