Electrical advice needed

[TNhobbyfarmer]

I am going to put a piece of woodworking equipment in my garage. It has a 220 volt 30 amp motor. I am going to need to install a 220 volt receptacle. Couple of questions: should the breaker in the box be 30 amp? Will I need 10-3 wire from the box to the receptacle. I assume a two pole breaker. I know just enough about wiring to be dangerous. Thanks for any advice.

 

[dieselcrawler]

40 amp breaker, 8awg wire, never design a circuit to have more than 80% continuous load.

 

[CobyRupert]

40 amp breaker, 8awg wire, never design a circuit to have more than 80% continuous load.

:thumbsup:

 

[Qapla]

It also depends on the equipment.

Does it need an independent ground in addition to the common?

Yes, it would be a two-pole/double breaker.

 

[TNhobbyfarmer]

It also depends on the equipment.

Does it need an independent ground in addition to the common?

Yes, it would be a two-pole/double breaker.

Not sure how to determine the answer to this question. Any advice as to how to determine if it needs an independent ground? What are the ramifications one way or the other?

 

[Sawyer Rob]

40 amp breaker, 8awg wire, never design a circuit to have more than 80% continuous load.

I agree...

SR

 

[teejk]

30a 240v motor??? What are you installing? Must be something big. Somebody already said 8awg (which I think is good to about 55a) but it ain't cheap.

 

[mbohuntr]

Without a cord ground, the frame can become energized in the event of a short.

 

[teejk]

Hate to repeat but I have to wonder if it is 30a at 120v (like a typical nice table saw). As you double the voltage you half the amps. Makes a big difference. Again what are you installing?

 

[mbohuntr]

Hate to repeat but I have to wonder if it is 30a at 120v (like a typical nice table saw). As you double the voltage you half the amps. Makes a big difference. Again what are you installing?

A nice grizzley shaper is 240v single phase, 30 amp.

Shop our G8622 - Sliding Table Shaper at Grizzly.com