Mike Holt Circuit Sizing - Air-Conditioning Sizing air-conditioning circuits are really simple. Just read the nameplate and use the NEC Table 310.16 (2020 NEC) and 240.4(D) and 240.4(G), 240.6, and 440.6(B). | Mike Holt Enterprises
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Mike Holt Circuit Sizing - Air-Conditioning Sizing air-conditioni…
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8.2K views · 107 reactions | To determine what size feeder is needed...
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The first time you’re called upon to size a conductor and overcurrent device for central air-conditioning 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... https://www.mikeholt.com/newsletters.php?action=display&l
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4K views · 73 reactions | What Code Section covers the sizing of generators? | Mike Holt Enterprises | Facebook
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230K views · 2.1K reactions | Sizing wire and protection for AC equipment is based on the nameplate. Yes 10 AWG on 40A breaker is correct. Watch MikeHolt.com/AC to understand why! I bet the Electrosaurs will have heart-burn… | Mike Holt Enterprises | Facebook
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Adjustable-speed drives can be variable-frequency speed drives(VFDs)—which refer to alternating-current drives only, or variable-speed drives (VSDs) which can be alternating-current or direct-current drives. Either of these can vary the speed of a motor, one by altering frequency and the other by adjusting voltage. But how does this affect the conductor sizing for the motor branch circuit? Does it even have an effect? Find out in this video on the topic of adjustable-speed drives… | Mike Holt En
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Knowing how to determine the exact maximum ampacity of an electrical conductor is a crucial requirement to ensuring a safe and adequate installation. The number of conductors in the same raceway that are carrying current can affect conductor ampacity, as can the ambient or surrounding temperature. Watch this video and follow along with the text from the book to hear Mike and his team explain how to evaluate these factors to make the proper choice when sizing electrical conductors… https://www.mi
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3.3K views · 103 reactions | In this video, NEC expert Mike Holt explai…
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