Electrical Safety and Codes Flashcards
6 cards from real EVITP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Electrical Safety and Codes flashcards as text
What is arc flash risk during EV charger work?
Answer: Explosive energy release from electrical fault causing burns and death
Arc flash produces extreme heat and pressure from an electrical fault.
What PPE is needed for energized EV charging work?
Answer: Arc-rated clothing, insulated gloves, safety glasses, voltage-rated tools
Multiple layers of electrical-specific protection are required.
What is lockout/tagout for EV installations?
Answer: Ensuring circuits are de-energized and locked to prevent accidental energization
LOTO physically prevents power from being restored during maintenance.
What is a GFCI and why is it required for EV charging?
Answer: Detects ground faults and disconnects power to prevent shock
GFCI protection detects current leakage and disconnects in milliseconds.
What wire sizing factors apply to EV charging?
Answer: Continuous load rating, voltage drop, ambient temperature, conduit fill
Multiple factors beyond just current draw affect wire sizing.
What is the minimum circuit for a 40A Level 2 EVSE?
Answer: 50A circuit with 6 AWG copper
125% continuous load rule requires 50A for a 40A EVSE.