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Maximum Raceway Length? Except for elevators, the NEC does not limit the length of a raceway.

Maximum Raceway Length? Except for elevators, the NEC does not limit the length of a raceway. For example, liquidtight flexible nonmetallic conduit is NOT limited to six feet in any run length [see 356.10(5)]. #mikeholt #electricaltraining #electrician #electricaleducation #electricaltrade #necrequirements

Maximum Raceway Length? Except for elevators, the NEC does not limit the length of a raceway. For example, liquidtight flexible nonmetallic conduit is NOT limited to six feet in any run length [see 356.10(5)]. #mikeholt #electricaltraining #electrician #electricaleducation #electricaltrade #necrequirements

What does the 40C on a circuit breaker mean? Per industry standards, breakers are calibrated to perform at an ambient temperature of 40 °C.

What does the 40C on a circuit breaker mean? Per industry standards, breakers are calibrated to perform at an ambient temperature of 40 °C. Thermal-magnetic breakers are temperature sensitive, and at temperatures above 40 °C will carry less current than their continuous current high temperature condition promotes nuisance tripping and can create unacceptable temperature conditions inside the breaker and at the terminals. To prevent these issues, the ambient temperature load derating values presented in the technical data section must be followed. [Eaton Catalog]

What does the 40C mean on the Breaker? Per industry standards, breakers are calibrated to perform at an ambient temperature of 40°C. Thermal-magnetic breakers are temperature sensitive, and at temperatures above 40°C will carry less current than their continuous current high temperature condition promotes nuisance tripping . To prevent these issues, the ambient temperature load derating values presented in the technical data section must be followed. [per Eaton Catalog]. #mikeholt #electricaltraining #electrician #electricaleducation #electricaltrade #necrequirements

Solar Photovoltaic (PV) Systems Scope, NEC 2023 - [690.1]

Article 690 in the National Electrical Code covers the requirements for Solar Photovoltaic (PV) Systems. These requirements are organized into six parts that are a perfect example of how some of the rules in NEC Chapters 1-4 can be modified by other sections of the Code. To follow along with this video, you can download the FREE PDF from our newsletter on this topic. Click the link below. 🔗https://www.mikeholt.com/newsletters.php?action=display&letterID=2861 Want to learn more about the NEC? Mike's Understanding the NEC Complete Training Library is a powerful tool to learn the National Electrical Code. Click the link below for additional options. 🔗www.MikeHolt.com/Code #NationalElectricalCode #NEC #NECRequirements #NECCode #MikeHolt #MikeHoltEnterprises #Electrician #ElectricalTrade #ElectricalContractor #JourneymanElectrician #ElectricalInspector #Electricaltraining #ElectricalEducation

Equipment Grounding [250.4(A)(2)] is a very complicated theory concept to understand. This 60 second video is just a primer on this topic. Please watch the full video that covers this topic at MikeHolt.com/Fundamentals.

Equipment Grounding [250.4(A)(2)] is a very complicated theory concept to understand. Please watch the full video that covers this topic at MikeHolt.com/Fundamentals.

Equipment Grounding [250.4(A)(2)] is a very complicated theory concept to understand. This 60 second video is just a primer on this topic. Please watch the full video that covers this topic at MikeHolt.com/Fundamentals.

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Service: A neutral conductor must be run to the service disconnecting means and it must be bonded to the metal service disconnect enclosure (main bonding jumper) in accordance with 250.24(C) and 250.142(A). Feeder: A neutral-to-ground bond is not permitted at a 'sub-panel' at a building supplied by a feeder, see 250.24(B), 250.32(B), and 250.142(B). #electrican #electricalcontractor #mikeholt #sparkylife #electricalapprentice

Understand when a neutral-to-ground bond is required and prohibited!

Service: A neutral conductor must be run to the service disconnecting means and it must be bonded to the metal service disconnect enclosure (main bonding jumper) in accordance with 250.24(C) and 250.142(A). Feeder: A neutral-to-ground bond is not permitted at a 'sub-panel' that is supplied by a feeder, see 250.24(B), 250.32(B), and 250.142(B). #electrican #electricalcontractor #mikeholt #sparkylife #electricalapprentice

Electrical equipment must be installed in a professional and skillful manner. This rule and its application is ultimately a judgment call made by the authority having jurisdiction. I'm sure we are going to see lots of heated discussion on the application of this rule. #electrican #electricalcontractor #mikeholt #sparkylife #electricalapprentice

Electrical equipment must be installed in a professional and skillful manner. This rule and its application is ultimately a judgment call made by the authority having jurisdiction. I'm sure we are going to see lots of heated discussion on the application of this rule. (#electrican #electricalcontractor #mikeholt #sparkylife #electricalapprentice