Overloading an electrical circuit may be caused by?

Overloading an electrical circuit may be caused by?

• A. Using undersized conductors
• B. Connecting loads that draw too much current
• C. Poor grounding
• D. A loose switch or breaker

Answer: (B)

A circuit is designed to carry a specific maximum current, based on the wire size and the protective device. Overloading happens when the total current drawn by all connected devices on that circuit exceeds that limit. When too much current flows, the conductors heat up, insulation can be damaged, and a protective device (like a breaker) is likely to trip to prevent a fire. That’s why the correct idea is about loads drawing more current than the circuit can safely handle—the direct cause of an overload. Other factors shown—poor grounding, a loose switch or breaker, or using undersized conductors—can cause safety issues or protect against overload, but they don’t define the overload condition itself unless the loads end up drawing excessive current.

A circuit is designed to carry a specific maximum current, based on the wire size and the protective device. Overloading happens when the total current drawn by all connected devices on that circuit exceeds that limit. When too much current flows, the conductors heat up, insulation can be damaged, and a protective device (like a breaker) is likely to trip to prevent a fire.

That’s why the correct idea is about loads drawing more current than the circuit can safely handle—the direct cause of an overload. Other factors shown—poor grounding, a loose switch or breaker, or using undersized conductors—can cause safety issues or protect against overload, but they don’t define the overload condition itself unless the loads end up drawing excessive current.