Visit mikeholt.com/graphic to see today's daily graphic - new images posted daily. These images are extracted from Mike Holt's Understanding the NEC Volume 1. #NECGraphic #MikeHolt #2023NEC #ElectricalEducation #ElectricalTraining #Electrician #NECRequirements | Mike Holt Enterprises
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Visit mikeholt.com/graphic to see today's daily graphic - new image…
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Grounding of Remote Buildings [250.32] Install the Grounding Electrode Conductor [250.32(A)] and the Equipment Grounding Conductor [250.32(B)] to the terminal bar connected to the cabinet [408.40]. Careful, NEVER connect the neutral terminal to the metal enclosure with the manufacture provided green screw [250.32(B). | Mike Holt Enterprises
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Grounding of Remote Buildings [250.32] Install the Grounding Elec…
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Article 250 of the NEC is perhaps the most misapplied, misinterpreted, and violated article in the Code. The terminology used in this article has been a source of much confusion. “Bonding jumper, main bonding jumper, system bonding jumper, supply-side bonding jumper.” What are these? How do they differ? How are they sized? Watch this video clip to get the answers. https://www.mikeholt.com/newsletters.php?action=display&letterID=2253 | Mike Holt Enterprises
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Article 250 of the NEC is perhaps the most misapplied, misinterpret…
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When a fault occurs in an electrical appliance, like a gas range, the connected metal gas piping could become energized exposing users to possible electric shock or fires caused by pinhole leaks in the gas piping caused by arcing. To eliminate these hazards, metal gas piping must be properly bonded per NEC 250.104(B). This section covers metal piping systems, including gas piping, when they’re likely to become energized. Want to learn more? Join Mike and the team in the video as they break down
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When a fault occurs in an electrical appliance, like a gas range, the co…
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One of the most exciting developments in modern electrical technology is the rapid growth of electric vehicles (EVs). But what’s even more groundbreaking is this: you can now power your home using energy stored in your EV’s battery. This powerful new capability, known as bidirectional power transfer, is the driving force behind the title of Article 625 “Electric Vehicle Power Transfer Systems.” So, what exactly does Article 625 cover? Join Mike and the video team as they walk through Article 625
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One of the most exciting developments in modern electrica…
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The circuit equipment grounding conductor (EGC) is sized in accordance with NEC Table 250.122, based on the rating the circuit overcurrent protection device. For example, the EGC for a 100A feeder would need to be a minimum of 8 AWG copper. | Mike Holt Enterprises
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The circuit equipment grounding conductor (EGC) is sized in accor…
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Perhaps one of the most interesting changes in the 2023 National Electrical Code is the addition of section 110.17 which requires that servicing and maintenance of equipment must be performed by qualified personnel. This new rule has an informational note referencing NFPA 70B “Recommended Practice for Electrical Equipment Maintenance” to guide Code users on the standard related to preventative maintenance for electrical equipment. Download a FREE PDF of this rule as you join Mike and the team ex
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When burying wiring we need to have sufficient ‘cover’ in accordan…
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For an installation to be safe from electric shock, run an equipment …
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Bonding bushing/jumpers are not required for raceways that enter a …
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At the service disconnect (main means of cutoff - disconnect utilit…
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