Code Corner: Insulation Resistance Testing, 2023 NFPA 70B

In 2023, for the first time,  the National Fire Protection Agency (NFPA) explicitly included photovoltaic (PV) systems in their Standard for Electrical Maintenance Handbook. In our most recent episode of Code Corner, Ryan Mayfield opens up 2023 NFPA 70B to analyze one of the crucial tests prescribed in Chapter 30, the insulation resistance test. Even […]

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