PPE
What does PPE stand for?
Personal Protective Equipment
What color should circuit 29 in a 3 phase 120/208 volts system?
Blue
These safety devices, mandatory in modern kitchens and bathrooms, are designed to protect people by shutting off power when they detect a current leakage to ground as low as 4 to 6 milliamperes?
What is a GFCI (or Ground Fault Circuit Interrupter)
When should PPE be inspected?
before each use
What color should circuit 38 in a 3 phase 277/480 volts system?
Brown
What is the purpose for an equipment grounding consuctor?
Provide an effective ground-fault current path
Why are leather protectors commonly worn over rubber insulating gloves?
To protect the insulating rubber against physical damage
What color should circuit 67 in a 3 phase 120/208 volts system?
Black
What is the formula for Ohm's Law?
V = I x R Volt's = Current (amps) x Resistance (ohms)
What is the primary purpose of arc-rated clothing?
reduce the severity of burns from the thermal effects of an arc flash
What color should circuit 39 in a 3 phase 277/480 volts system?
Orange
What is the purpose of a disconnect switch?
Provide a means to isolate electrical equipment from its power source
Arc flash face shields with balaclava are generally only permitted up to __ cal/cm²?
12 cal/cm²
What color should circuit 16 in a 1 phase 120/240 volts system?
Red
What does a transformer do?
Changes AC voltage thought electromagnetic induction