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Old 02-25-2009, 09:56 PM   #1
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wiring 240 V switch


I am installing a 240 V switch for a 1 hp motor. I see there are two gold screws on the top and two bronze ones on the bottom. Do I attach the wires going in to the two top screws or the two screws on the left?

Thank you


Last edited by erlindbl; 02-26-2009 at 12:23 AM.
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Old 02-25-2009, 10:27 PM   #2
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wiring 240 V switch


Line on one set (top) load on the other (bottom).

If you do it wrong, you will know as soon as you turn the switch on

The instructions should be on the box.

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Old 02-26-2009, 12:32 AM   #3
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wiring 240 V switch


You would have thought so. I looked over every inch of the box and on the switch itself. No instructions inside either. It is a Levitron.....

Thank you
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Old 02-26-2009, 01:27 PM   #4
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wiring 240 V switch


Try checking continuity between the terminals...
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Old 02-26-2009, 01:41 PM   #5
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wiring 240 V switch


Quote:
Originally Posted by daxinarian View Post
Try checking continuity between the terminals...
Wouldn't that take the fun out?
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Old 02-26-2009, 02:57 PM   #6
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wiring 240 V switch


Quote:
Originally Posted by erlindbl View Post
You would have thought so. I looked over every inch of the box and on the switch itself. No instructions inside either. It is a Levitron.....

Thank you
Make sure the switch actually says ON/OFF.
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Old 02-27-2009, 10:37 AM   #7
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wiring 240 V switch


Make sure you get a good heavy duty 20 amp two pole switch. The motor will draw about 8 amps running, but it will draw much higher current when starting. This is not the time to skimp on the switch.
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Old 02-27-2009, 11:55 AM   #8
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wiring 240 V switch


If your using a general purpose snap switch for 2hp 300 volts or less motors the motor flc cannot be greater than 80% of the switch rating for the switch to serve as a disconnect. Table FLC is around 8 amps as J.V. noted. So any 15 amp double pole or greater will suffice for the disconnect.
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Old 02-28-2009, 01:36 AM   #9
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wiring 240 V switch


I got the switch from the electrical supply house. It is a 1 hp motor and they said the switch was rated up to a 2hp motor. Since the switch is in my garage 250 feet away from the well, I have a separate pull out disconnect installed there.

Thanks for the input.

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