What does a hot-surface igniter achieve through conduction of electrical current?

A hot-surface igniter achieves flame ignition temperature through the conduction of electrical current. When electrical current passes through the igniter, it heats the material to a high temperature, often exceeding 1,400°F (760°C). This intense heat is sufficient to ignite the gas in a furnace or other heating equipment, triggering the combustion process. The efficiency of the igniter is crucial for reliable operation, as it needs to reach the optimal temperature quickly to ensure proper ignition of the gas burner.

The other options don't relate to the primary function of a hot-surface igniter; for example, cooking heat pertains to a different application, while gas pressure regulation and electricity generation involve mechanisms outside the role of an igniter. This clear function of reaching ignition temperature is vital for the safety and effectiveness of gas-fueled heating systems.