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Clare Snyder Clare Snyder is offline
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Default Using portable generator to power furnace fan (AC/PSC motor) - yes or no?

On Sat, 05 Oct 2019 11:42:39 -0400, Home Guy wrote:

wrote:

I would seriously suggest that you go to a slightly bigger & better
make & model - this one doesn't have any 230 volt output.
Also consider that your furnace is probably hard-wired - best to
be prepared for the generator hook-up in advance - not after the
power outage when it's dark & cold & the basement is flooding or
freezer is thawing ..


I'm only considering this because (a) it's relatively cheap today and
(b) if I ever did need it, then so would several thousand other people
and there'd be none on the shelf in that case.

Absolutely no need for 220v.

Only considering it if I'd be in the middle of a multi-day (or longer)
power failure in winter, otherwise this thing would be sitting in the
box, possibly for the next 5 to 10 years or who knows how long. So it's
a pretty end-of-the-world type situation that I'd put it to use. Truth
is I'd probably end up loaning it to friends/family going camping before
I'd put it to this anticipated emergency use.

I could easily rig up some wire to run the motor through the basement
wall up to the outside where I'd have this thing running. Only the
furnace would be on that circuit, disconnected from house wiring.
Wouldn't need to power the fridge in this circumstance (the back porch
would be our fridge).

My gas water heater uses no electrical power at all, not for burner and
has no draft fan.

The only other thing I'd power off the generator would be my internet /
network UPS.

So I guess the short answer is yes, they have or could power an ordinary
fractional HP electric motor.

Exactly what my brother did. He wired the furnace through a DPDT
switch to flip between grid and generator - and had several generator
only outlets on the main floor of the house to run some lights and
plug in small appliances.