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NEC 2020 Reconditioning Requirements: Is this Cash for Clunkers?
By Howard Herndon – Electrical Professional Consulting The new proposed 2020 NEC requirements prohibiting or restricting remanufactured equipment will have a major impact on the electrical and electromechanical reconditioning industries as well as end users,...
Ground-Fault Protection Systems and Electrical Inspections
Don’t just take a glance, see a testing sticker and approve it! Ground-fault protection of electrical equipment is required by the National Electrical Code (NEC) in order to minimize the damage to the equipment in the case of a ground fault. Ground-fault protection...
Wiring Temperature Field Installation Experiment by Howard Herndon
The rooftop temperature adders in NEC 310.15(B)(3)(c) were first included in the 2008 NEC. The proposal to include this requirement was based on a study that showed increased temperatures in conduits on rooftops in direct sunlight. However, there...