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Home > Home & Garden > Electrical & Lighting   »   A/C Disconnect switch

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Old Feb 24, 2007, 06:30 AM
kinaiahi
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A/C Disconnect switch
I am having a 36,000 btu split system installed. This unit is 230/208v with 30 amp breaker. Instead of using the pull out style or lever style disconnects, would it be safe to use a 30 amp 120/277v a/c double pole toggle switch mounted in a appropriate weather proof box as my disconnect?

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Old Feb 24, 2007, 11:32 AM   #2  
tkrussell
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I will say no, better to use the pull out style. The switch you are proposing must be listed as a motor-circuit switch, rated in horsepower, and several other qualifying criteria that mostly it is not, as per NEC Section 440.109 (A) (1).

See the sticky, Read this First for a link to the NEC.
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Old Feb 24, 2007, 12:18 PM   #3  
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Thank you very much for responding. Yes, it is a motor-circuit switch. It is a industrial grade double pole grounding switch useed for motor operated equipment,water heaters, pumps etc. Here is a link to this switch. Please tell me what you think.

Lowe's Home
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Old Feb 24, 2007, 01:03 PM   #4  
tkrussell
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Looks like your all set, I checked the Cooper site, and found this switch is rated for 2 HP or 24 amps, so your good to go.
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Old Feb 24, 2007, 03:45 PM   #5  
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Thank you!
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