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Pher9999
join:2011-07-06
Saucier, MS

Pher9999 to alkizmo

Member

to alkizmo

Re: Generator sizing Chart

But if the well pump and the Furnace need to spin up at the same time doesn't that use both starting wattages at the same time to double? so if both are around 2500w starting, I would need 5000w to get both up and runnning together?

garys_2k
Premium Member
join:2004-05-07
Farmington, MI

garys_2k

Premium Member

Sure, so a cushion to allow that to happen is an excellent idea. Beyond sizing for two motors that happen to spin up together, though, is likely overkill.

alkizmo
join:2007-06-25
Pierrefonds, QC

alkizmo to Pher9999

Member

to Pher9999
said by Pher9999:

But if the well pump and the Furnace need to spin up at the same time doesn't that use both starting wattages at the same time to double? so if both are around 2500w starting, I would need 5000w to get both up and runnning together?

It's possible, but very unlikely. We're talking about a couple of seconds of starting wattage per 15-20 minutes.

I'd suggest that you leave the furnace blower ON at all time, that way it will only kick start once.

Pher9999
join:2011-07-06
Saucier, MS

Pher9999

Member

Furnace is boiler with radiator heat. no blower. circulator pump and the spark to light it.

alkizmo
join:2007-06-25
Pierrefonds, QC

1 recommendation

alkizmo

Member

Then you'll need to deal with it.
But again, it's highly unlikely both would start at the same time.

If each of them kick start on average every 20 minutes, and they take 2 seconds to start:

20 minutes x 60 seconds = 1200 seconds
2 seconds / 1200 = 1/600th chance they start at the same time in a single 20 minute session. 600 attemps (in 20 minute spans) is 500 days