When a HVAC circuit breaker is tested for endurance, it is tested for at least
A. 1000 opening- closing operations
B. 100 opening- closing operations
C. 10 opening- closing operations
D. 5 opening- closing operations
Answer:A
When a HVAC circuit breaker is tested for endurance, it is tested for at least
A. 1000 opening- closing operations B. 100 opening- closing operations C. 10 opening- closing operations D. 5 opening- closing operations