440.4(B) AirConditioning, Circuit Sizing – https://www.MikeHolt.com/code.'>https://www.MikeHolt.com/code. The first time you’re called upon to size a conductor and overcurrent device for central airconditioning and you look at the nameplate requirements that clearly state that a 10 AWG copper conductor and a 50A OCPD are required, it may contradict everything you’ve learned about small conductors. In fact, you may adamantly insist that 6 AWG is required by the Code and you’d be wrong! Learn why in this video on section 440.4(B) of the NEC.

This video is extracted from Mike Holt's bestselling 2020 Understanding the National Electrical Code Complete Video Library, to learn more visit https://www.MikeHolt.com/code or call 888.632.2633.

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