OP
Need more space
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So simply interrupt one of the two wires going to the pressure switch with a toggle and I'm all set. Seems easy enough
Switch on 220 compressor
- Thread starter Need more space
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So simply interrupt one of the two wires going to the pressure switch with a toggle and I'm all set. Seems easy enough
OP
Need more space
Well-known member
Found this switch while at homedepot, wouldn't this work to run a 30 amp double pull breaker to this switch and from switch to mag starter on compressor? Then I can simply flip switch off for over night?
https://www.homedepot.com/p/Leviton...ble-Pole-Switch-White-R62-03032-2WS/100356941
https://www.homedepot.com/p/Leviton...ble-Pole-Switch-White-R62-03032-2WS/100356941
exranger06
Well-known member
You can do something like that, however that switch is only 2 hp rated. You'll need a switch that's 5 hp rated, since you have a 5 hp compressor. The Leviton MS302-DS switch is basically the same but it's 5 hp rated.
OP
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Good eye, not sure how I missed that. Guess its my luck, they don't stock the one I need at my local store
alfredeneuman
Well-known member
THAT one is the same one I mistakenly looked up, hence the 2hp @ 120/240
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bczygan
Well-known member
OK,
So I have a 5HP compressor with a 240V magnet motor starter.
Motor Starter 5hp 1ph 230V definite purpose magnetic motor starter from Square D 8911dpsg32v09
Definite Purpose Magnetic Motor Starter, Number of Poles 2, 30 Amps AC, Coil Volts 208 to 240VAC, Enclosure NEMA Rating 1, HP @ 1 Phase - 120V 2, HP @ 1 Phase - 240V 5, Nonreversing, 50/60 Hz.
Pressure switch is:
Furnas 69
It will all be mounted installed in an enclosed porch on the other side of the wall from the shop.
I would like a switch inside the shop to turn on and off the compressor.
So what kind of switch and where in the circuitry does it go?
Bill
So I have a 5HP compressor with a 240V magnet motor starter.
Motor Starter 5hp 1ph 230V definite purpose magnetic motor starter from Square D 8911dpsg32v09
Definite Purpose Magnetic Motor Starter, Number of Poles 2, 30 Amps AC, Coil Volts 208 to 240VAC, Enclosure NEMA Rating 1, HP @ 1 Phase - 120V 2, HP @ 1 Phase - 240V 5, Nonreversing, 50/60 Hz.
Pressure switch is:
Furnas 69
It will all be mounted installed in an enclosed porch on the other side of the wall from the shop.
I would like a switch inside the shop to turn on and off the compressor.
So what kind of switch and where in the circuitry does it go?
Bill
rlitman
Well-known member
With a magnetic starter, any light switch rated for 250V or higher will do (I believe all are nowadays). Just wire it in series with the pressure switch.
OP
Need more space
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On either of the two wires coming from the pressure switch?
wyliesdiesels
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alfredeneuman
Well-known member
Most cheap residential grade switches are 120V only.
You need the 120/277 volt rated ones.
OP
Need more space
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So since its on the pressure switch is low voltage a toggle switch like this would work?
https://www.homedepot.com/p/Gardner-Bender-20-Amp-Single-Pole-Toggle-Switch-1-Pack-GSW-121/100117400
rlitman
Well-known member
A low voltage switch would not work, because the control (coil) voltage is probably the line voltage (unless you have a transformer providing low voltage for the coil). However, that switch shows a 277V rating, so it would be fine to interrupt the pressure switch, assuming there was a motor starter contactor it was controlling.
wyliesdiesels
Well-known member
Whats the voltage rating on your coil?
bczygan
Well-known member
240v
wyliesdiesels
Well-known member
I was asking the Op not yourself.
Dont need a HP rated switch for a magnetic starter control circuit.
Sure, if you’re using OEM. I guess I missed the wiring schematic.
wyliesdiesels
Well-known member
Dont think youre paying attention to the conversation.
Were talking about a switch for the control circuit.
The control circuit doesnt switch the current of the 5HP motor.
Duker
Well-known member
EOC_Jason
Well-known member
The coil circuit is not low voltage, it's low amperage (current)... It is typically the same voltage as the rest of the compressor (240v)...
That toggle switch will work though as it is 240v rated.
OP
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Honestly no clue, ill see if it has any rating marked on it
alfredeneuman
Well-known member
Need more space.
Your question was answered correctly with post #6 and #7.
You'll only need to drill a hole in the starter enclosure if there isn't one already.
It will work regardless of coil voltage.
Your question was answered correctly with post #6 and #7.
You'll only need to drill a hole in the starter enclosure if there isn't one already.
It will work regardless of coil voltage.
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OP
Need more space
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Thank you, seems the easiest way to achieve a switch. Amazed they don't come from the factory with one.