Boiler with a Geo Thermal setup in the house

[moey]

((60*2)*240) = 28,800 watts at full draw

For a 60 amp breaker the max sustained current draw would be 48 amps anything higher will start to trip the breaker after a period of time.

I suspect you have a 10000 watt heating element because I doubt they make a simple combination to get to a 11000 watt electric heat element which would correspond to 48 amps roughly.

You would have to look at the spec sheet for the heat pump. I suspect its between 3k-5k watts at a steady state also dependent on which stage its running in. The technical literature for the heat pump recommends a larger breaker I suspect to avoid nuisance tripping on startup. Geothermal heat pumps are about 1000 watts per ton. So a 4 ton system would be in the 4000 watt draw at steady state.

You would never draw 28kw though otherwise breakers would trip.

Hope this helps.

If I had to guess at full tilt with the heat pump and electric heat running your drawing about 14k to 15k watts. That would be for a 4 or 5 ton system.

 

[sloeffle]

For a 60 amp breaker the max sustained current draw would be 48 amps anything higher will start to trip the breaker after a period of time.

Interesting, I never knew this. I should of paid more attention in my basic electric class in college.

I went downstairs and look at the auxiliary heat pack.

14.4/19.2kW
69.3/80 amps
Model Number EAL20

The first number is for 208V rating according to the documentation. From what I am reading in this document it looks like the heat pack is rated at 65,500 BTU/HR.

You would have to look at the spec sheet for the heat pump. I suspect its between 3k-5k watts at a steady state also dependent on which stage its running in. The technical literature for the heat pump recommends a larger breaker I suspect to avoid nuisance tripping on startup. Geothermal heat pumps are about 1000 watts per ton. So a 4 ton system would be in the 4000 watt draw at steady state.

According to my Efergy it draws 2.4kW when running during the first stage. I verified this with an amp clamp too. I haven't really paid attention to what it draws in the second stage.

Thanks for all your insights. You must be an electrical engineer by trade.

 

[moey]

Interesting, I never knew this. I should of paid more attention in my basic electric class in college.

I went downstairs and look at the auxiliary heat pack.

14.4/19.2kW
69.3/80 amps
Model Number EAL20

The first number is for 208V rating according to the documentation. From what I am reading in this document it looks like the heat pack is rated at 65,500 BTU/HR.

I dont quite understand those two tables in the document you linked they seem to be contradictory. I think there must be different connections on the heat pack depending upon desired output. 65,500 BTU corresponds to about 80 amps on a 240v circuit youd trip a 60 amp breaker. They do have a 40amp option for wiring in one of the tables with the EAL20. Again I dont quite understand the descriptions in the two tables but if you have a 60 amps breaker Im guessing its wired for a 40 amps draw which is about 33000 btus.

Our heat packs have come on quite a bit the last three nights. Its been -26F, -25F, and -18F. During the day I turn our pellet stove on but Im sure Ive racked up some higher electrical usage the last three nights.