220 circuit switch

[brownbagg]

how do you wire a switch for a 220 circuit, no not talking about a shut off or circuit breaker but a motor control for a motor that runs off of 220. it not a replacement motor but something Im making up that using a 220 motor.

so I have tow hots and a ground. The motor only pulling 3 amps, so nothing major. Do i use a double pole switch or some high dollar unit only from the supply house.

I have replace 220 motors and ran 220 circuits but never had to add a switch to a circuit, and no I dont need a circuit cut off switch, we are talking motor control.

 

[kwb]

I did what you are asking once with a double pole switch and it worked fine

 

[n20junkie]

For something like a mill we use a drum switch that can control both legs as well as reverse if needed.

 

[EOC_Jason]

You can get motor-rated 20A & 30A double-pole switches at HD / Lowes... I think they are $10 or less...

 

[extropic]

Two pole, single throw toggle switch or a drum switch (if reversing is needed). Pay attention to the "HP" rating of the switch (bigger is more robust).

https://www.amazon.com/dp/B00004WLK9/?tag=atomicindus08-20


https://www.amazon.com/dp/B004VBTPDW/?tag=atomicindus08-20

 

[6PTsocket]

how do you wire a switch for a 220 circuit, no not talking about a shut off or circuit breaker but a motor control for a motor that runs off of 220. it not a replacement motor but something Im making up that using a 220 motor.

so I have tow hots and a ground. The motor only pulling 3 amps, so nothing major. Do i use a double pole switch or some high dollar unit only from the supply house.

I have replace 220 motors and ran 220 circuits but never had to add a switch to a circuit, and no I dont need a circuit cut off switch, we are talking motor control.

Everybody correctly recommended a 2 pole switch. Don't forget to Use a 3 prong plug that carries that motor ground to the house ground in addition to the 2 hots.

Sent from my SM-G900V using Tapatalk

 

[Norcal]

A 2 pole switch is the preferred method but is not required by the NEC unless it is a disconnecting means.

 

[sberry]

for control only a common light switch.

 

[EOC_Jason]

These are what I was talking about, if your motor is only pulling 3A then the first should be fine, that is what I use mounted next to my 20A plug on the wall that is for my 1.5HP air compressor that doesn't have its own switch on the pressure box.

$5.98 - Leviton 20 Amp Commercial Double-Pole Toggle Switch

$11.48 - Leviton 30 Amp Industrial Double Pole Switch

 

[mm08822]

Does your motor have internal overload protection?

If it has internal o/l protection, then just a manually operated Horsepower rated switch can be used.

If it does not have internal o/l protection, then you need a manual starter (with o/l protection) or you could use a starter - which is a contactor in series with o/l protection relay to drop out the coil of the contactor if o/l occurs.

And of course as already stated, grounding of the motor/frame is required.

Another consideration is - do you need 3 wire control? 3 wire control prevents automatic motor restart upon recovering from low voltage conditions or loss of power entirely. A manual switch does not have those features. Motor application and safety usually determine that need.