electricalsafetyforconstruction(編輯修改稿)
2024-11-04 21:37 本頁面
【文章內(nèi)容簡介】 A = Ventricular fibrillation (Usually cause death) 1,000 mA = Heart stops Effects of Current Grounding ?Protects you from electrical shock ?Safeguards against fire ?Protects electrical equipment from damage 4a Grounding ?Two types of grounding include: ? Service or system ground ? Equipment ground 4b Circuit protective devices ?At construction sites, the most mon electrical hazard is the ground fault electrical shock ?OSHA requires either: ? Ground fault circuit interrupters (GFCIs)。 or ? Assured Grounding Conductor Program 5a Circuit protective devices ?Circuit protective devices include: ? fuses and circuit breakers protect conductors and equipment ? GFCIs limit or shut off current flow 5b Ground fault circuit interrupters ?A fastacting circuit breaker that senses small imbalances in the circuit caused by current leakage to ground 6a PLUG COIL LOAD HOT NEUTRAL 1 AMP 1 AMP 1 AMP PLUG COIL LOAD HOT NEUTRAL 1000 mA 995 mA 5 mA GROUND 1000 mA PLUG COIL LOAD HOT NEUTRAL 1000 mA 1 AMP 5 mA GROUND 995 mA Polarity Assured Equipment Grounding Conductor program ?If GFCIs are not
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