Humber/Ontario Real Estate Course 3 Exam Practice

The correct answer is a ground fault circuit interrupter (GFCI). A GFCI is a tool specifically designed to interrupt power in a circuit in the event of a minor electrical leak, also known as a ground fault. This is a crucial safety feature that helps protect against the risk of electric shock and electrical fires caused by faulty wiring or appliances.

The other options are not the best choices because:

- An electrical leakage circuit breaker is not a standard term used in the context of electrical safety devices.

- A grounded outlet refers to an outlet that has a proper grounding connection, but it does not specifically address interrupting power in case of a ground fault.

- A main circuit breaker is responsible for shutting off power to the entire circuit in case of an overload or short circuit, but it may not respond as quickly to a minor electrical leak like a GFCI would.

- A power surge protector is designed to protect electronic devices from voltage spikes, not to interrupt power during a minor electrical leak.

- While a residual current device (RCD) is similar to a GFCI and serves a similar purpose, in the context of Ontario real estate practices, a GFCI is the more commonly used term.