Space Heater Circuits: The Amperage Math That Prevents a House Fire

Space Heater Circuits: The Amperage Math That Prevents a House Fire — image 1

Space heaters cause a disproportionate share of the electrical fires I get called out to investigate, and it is almost never the heater itself that fails first — it is the circuit underneath it. A typical 1,500-watt space heater draws close to 12.5 amps continuously, and on an older 15-amp circuit that is already carrying … Read more

Manual Transfer Switch vs Interlock Kit: Which One I Recommend for a Portable Generator

Manual Transfer Switch vs Interlock Kit: Which One I Recommend for a Portable Generator — image 1

Every time I get a call about connecting a portable generator to a house, the same question comes up: do I need a transfer switch, or is an interlock kit good enough? Both do the same core job of preventing backfeed into the utility lines—which is the thing that kills lineworkers—but they get there differently, … Read more