I want to wire an 8 kw standby generator to power my home furnace (120 v, 20 amp) automatically in case of a power outage.
The generator can be purchased with and without a transfer switch.
Is there important circuitry in the transfer switch (e.g., that starts the generator every week so)? Or, can I just wire the furnace to a double pole double throw relay, for $20 or so?
(I plan to run a few extension cords to power lights, refrig, etc. but I will hook those up manually.)
Best Answer
The input to the house should be an "INLET" not an Outlet.. The power cord from the generator has a connector (MALE Plug) to connect to the generator, and a FEMALE to connect to the house mounted inlet. The inlet should be connected to a DEDICATED receptacle inside the house to allow use of an extension cord to power individual loads OR to a manual double pole double (SPDT) throw transfer switch if feeding the main service panel. Properly installed and listed SPDT transfer switch prevents connection of the generator to the utility. Alternates using UL listed circuit breaker interlocks are also available. Reliance makes a 6 circuit panel that includes an inlet, and six interlocked pairs of circuit breakers that facilitate power transfer. Do it correctly, use a licensed electrician.