Question 1 of 5
What is the primary function of both single-pole and double-pole circuit breakers?
Both breaker types serve to protect circuits from dangerous electrical faults.
Question 2 of 5
In the US (NEC), which type of breaker is typically used for 120V circuits?
Single-pole breakers are standard for 120V circuits in the US.
Question 3 of 5
Which type of breaker is used in 240V circuits, according to NEC?
Double-pole breakers are necessary for 240V circuits to protect both hot wires.
Question 4 of 5
How many hot wires does a double-pole breaker connect to in a standard 240V circuit (NEC)?
Double-pole breakers connect to both hot wires in a 240V circuit.
Question 5 of 5
What is the primary difference in how double-pole breakers operate compared to single-pole breakers?
Double-pole breakers are mechanically linked so they both disconnect at the same time.
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