Licensed Electricians? Wiring a 230V compressor

[JMarsa]

Called my compressor manufacturer and they say it needs to be hard wired to a breaker. I thought I read somewhere that the NEC requires a disconnect within 3 ft of the motor? Anyone know?

--JMarsa

[ProBell]

You need a service disconnect in sight and closer than 50'. It can be a plug, actual disconnect switch or breaker as long as it meets the above. Randy

[LateNight72]

I have my compressor wired to a std. 220 plug, which then runs to a dedicated breaker in the fuse-box.


-Todd

[hoosiergta]

Now I really feel like a red neck, Ihave been unpluging the wife's dryer............for the last 4yrs. when I needed it.Man I'm learning a kinds of stuff here.Dan

[JMarsa]

Thanks everyone.

I guess they meant I needed a dedicated circuit. I was planning on using a plug and wiring it directly to the 40A breaker when I called to ask if it needed to be a 3 or 4 wire and they really threw me off with the "directly to the breaker" bit.

--JMarsa

[Vinz68]

All you should need for a 40 amp comp. is 8/2 with ground . The ground has to be # 10. If the comp. is in line of sight of the Elec panel you dont really need a means of disconnect. If you don't want to use a cord and plug you can use an A/C disconnect it will be a little cheaper.

[JMarsa]

The unit is located in an enclosed room that is on the other side of the wall the panel is mounted so I need a disconnect and then to pass thrugh the wall over to the panel.

This is a 100% duty cycle motor with 23 FLA so the 125% cord rule applies, meaning I need a 30A cord, but with 40A breaker it makes the cord the weak link. I've been trying to find a decent lower cost approach without getting into expensive 50A plugs/receptacles, since they jump from 30 to 50 (no 40A).

--JMarsa