The Mike Holt Podcast

We’re committed to improving the electrical industry in every way we can. We strive to provide as much as we can to the industry at no charge. From industry publications to Mike Holt guides on key topics like Swimming Pools and Marinas, we provide an abundance of content to help you.

Last refreshed: August 25th, 2025 at 2:40 PM ⓘ

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Episodes

Bonding, Other Enclosures [250.96, 2020 NEC]

250.96 Bonding, Other Enclosures – https://www.MikeHolt.com/bonding . If you remember that the whole purpose of bonding is to establish an “effective ground-fault current path” in order to clear a fault, then you can better understand why proper bonding of enclosures and raceways is crucial in maintaining a safe electrical installation....

Aug 10, 2021•3 min•Ep. 11

Bonding, Metal Raceways [250.97, 2020 NEC]

250.97 Bonding, Metal Raceways – https://www.MikeHolt.com/bonding . If you remember that the whole purpose of bonding is to establish an “effective ground-fault current path” in order to clear a fault, then you can better understand why proper bonding of raceways is crucial in maintaining a safe electrical installation....

Aug 10, 2021•7 min•Ep. 10

Bonding, Communications Equipment [250.94, 2020 NEC]

250.94 Bonding, Communications Equipment – https://www.MikeHolt.com/bonding . Many believe that because of lower the operating voltages of communications systems, proper bonding of such systems is no big deal. That couldn’t be further from the truth! Find out why intersystem bonding and creating a “zero” potential is an important factor in a safe electrical system....

Aug 10, 2021•5 min•Ep. 9

Bonding Jumper, Supply Side [250.102, 2020 NEC]

250.102 Bonding Jumper, Supply Side – https://www.MikeHolt.com/bonding . There are basic rules for supply-side bonding jumpers, find out just what those rules are in this video clip....

Aug 10, 2021•2 min•Ep. 8

Article 242 Overvoltage Protection

Mike Holt discusses Overvoltage Protectors with John Cavaroc, Ph.D., P.E. from Safe Laboratories and Engineering Corp.

Aug 10, 2021•28 min•Ep. 7

Arc-Flash Hazard Warning Label [110.16, 2020 NEC]

110.16 Arc-Flash Hazard Warning Label – https://www.MikeHolt.com/code . What’s an arc-flash warning label? Where do these warnings need to appear? Who’s responsible for posting these warnings? The answers to these questions (and more) are discussed in this podcast on section 110.16 of the NEC....

Aug 10, 2021•24 min•Ep. 6

Ampacity Table [310.15, 2020 NEC]

The number of conductors in the same raceway that are carrying current can affect conductor ampacity, as can the ambient or surrounding temperature. In this video we’ll explain how to evaluate these factors to make the proper choice when sizing electrical conductors.

Aug 10, 2021•13 min•Ep. 5

Air-Conditioning, Circuit Sizing [440.4(B), 2020 NEC]

440.4(B) Air-Conditioning, Circuit Sizing – https://www.MikeHolt.com/code . 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 podcast on section 44...

Aug 10, 2021•6 min•Ep. 4

Adjustable-Speed Drives [430 Part X]

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.

Aug 10, 2021•16 min•Ep. 3

Mike's Story

In this podcast Mike Holt, Electrical Code Expert and President of Mike Holt Enterprises (www.mikeholt.com) shares the experiences, the struggles and the events that have shaped him, in addition to providing encouragement to others.

Apr 02, 2021•34 min•Ep. 2

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