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I have two 120 volt loads for a carwash vacuum system. Each vacuum pulls 24 amps.
so I will have 4 ccc’s feeding this system. Ambient temp is controlled.
Thhn wire, derated at 80% = 32 amps. Can I still use #10 wire with a 30 amp breaker?
Thanks
 

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I have two 120 volt loads for a carwash vacuum system. Each vacuum pulls 24 amps.
so I will have 4 ccc’s feeding this system. Ambient temp is controlled.
Thhn wire, derated at 80% = 32 amps. Can I still use #10 wire with a 30 amp breaker?
Thanks
Two pole breaker and MWBC gets three current carrying conductors.
 

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36th year apprentice & Floor Sweeper
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Yes.
 
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