15 Amp Circuit Enough

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Posts: 137
Joined: Sat. Mar. 05, 2011 10:31 pm
Stoker Coal Boiler: EFM 520
Stove/Furnace Model: EFM 520
Location: winchester, va

Post Wed. May. 03, 2017 8:42 am

I am going to rewire my power source for my stoker. Planning on putting in a switch and power from that to the aquastat and timer to stoker.
I have a bunch of 14 ga and 15 amp breakers. Looks like tech motor only draws 3.2 amps. So would a dedicated 15 amp circuit with only 20' of line loss be sufficient?

Posts: 206
Joined: Sat. Nov. 08, 2014 11:47 am
Stoker Coal Boiler: Keystoker '81 KA4 (online 1/16/17)
Coal Size/Type: Lehigh Rice
Other Heating: EFM SPK600
Location: Quakertown, PA

Post Wed. May. 03, 2017 10:04 am

15A should be plenty. 3.2A @ 120v is only 384w. You have room for another 1400w on that circuit.

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Joined: Tue. Feb. 17, 2015 5:07 pm
Stoker Coal Boiler: 1986 EFM DF520
Coal Size/Type: Rice/Anthracite
Other Heating: oil fired boiler

Post Wed. May. 03, 2017 6:11 pm

You got more than enough room with that size service to your stoker.
just make sure that you always size the over-current protection ( circuit breaker, fuse)
to the conductor size and you will always be covered, and in a residential setting voltage drop is normally not a problem.
I actually installed a receptacle downstream of my aquastat at the stoker and added a flexible cord to my S20 stoker that way I can have total control at the stoker. If I want to isolate the stoker at any time I just unplug it whether it is calling or not.
Best of luck

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Joined: Fri. Apr. 11, 2008 2:54 pm
Stoker Coal Boiler: Axeman Anderson 130 (pea)
Hot Air Coal Stoker Stove: Reading piece o' junk in the barn (rice)
Coal Size/Type: Pea size, Superior, deep mined
Location: Orrington, Maine

Post Thu. May. 04, 2017 9:32 am

Here in Maine, a 15 amp circuit for a boiler is the law. ( I don't know exactly why)
Orrington, Maine

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