Question 1
Which device is specifically designed to protect conductors and equipment from overcurrent conditions?
Question 2
A 100A service has a calculated demand load of 85A. Is a 100A main breaker acceptable if the breaker is marked for continuous operation at 80%?
Question 3
A 100A service has an 85A calculated demand. Is a 100A (80% rated) breaker sufficient?
Question 4
Which of the following is the primary criterion for sizing an overcurrent protection device (OCPD) for a residential branch circuit?
Question 5
What is the primary purpose of a Class A GFCI device in a dwelling unit?
Question 6
Which device is used to protect a circuit from overcurrent conditions such as overloads and short circuits?
Question 7
What is the primary purpose of a circuit breaker in a branch circuit?
Question 8
What is the primary function of a circuit breaker in a panelboard?
Question 9
What is the primary purpose of a branch-circuit overcurrent protective device such as a circuit breaker?
Question 10
Which PPE item is specifically intended to protect a worker's eyes from flying debris while drilling concrete for anchors?
Question 11
A 120V circuit has a load of 16A continuous. What is the minimum breaker rating required?
Question 12
A circuit breaker is rated for 75°C. Can you use 90°C wire at its 90°C ampacity?
Question 13
A 120V, single-phase circuit supplying a general load of 16A continuous duty requires a breaker rated at least: