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Electrical Wire and Cable

What Size Wire for a 60 Amp 220v Cable to an Air Handler?

By Dave Rongey - Summary:

I need to run a 60 amp 220v cable to an air handler for a 45 ft length, should I use number 8 or 6 cable…

Electrical Question from SAM about Circuit Wiring
Background: SAM, a Handyman from Dayton Ohio

Question: I need to run a 60 amp 220v cable to an air handler for a 45 ft length, should I use number 8 or 6 cable ?

Dave’s Reply:
Thanks for your electrical question Sam. It really depends on the horsepower of the motor, and if it is single phase or three phase.  A #6 Copper is the likely size depending on the type of insulation. If the air handler is mounted on a roof then you must apply the NEC code for sun exposure on conduits.

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