Why do i have colonial flex type nm 600 volts 14/2 ground wire in hot water baseboard heater6/30/2023 ![]() If openings in non-metallic boxes are broken out and not used, the entire box shall be replaced. NEC 110-12 and 370-18 Unused openings in boxes shall be effectively closed. When openings in non-metallic boxes are broken out and not used, the entire box must be replaced. Unused openings in boxes shall be effectively closed. Understanding the importance of Proper Wiring Methods, and wiring according to Electrical Codes. ![]()
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