Zephyr wrote:
"Charles Schuler" wrote in message
. ..

"Zephyr" an address @ some place .com wrote in message
m...

Hey group,

I'm contemplating going to Geo Thermal heat,
I've talked to a couple different installers and they say that I need
400 amp service to do this.
this would be split into 2 200 amp boxes, one for the geo and
accessories, (which qualify for a lower rate) and 1 for the rest of the
house.

currently I have 2 meters on the house 1st is a 150 amp service and the
second is an interruptible service meter for my AC unit.
( I am in SE Michigan, use DTE energy)

If I need to go to 400 amp service is it as simple as having both meters
replaced with larger 200 amp units?
or would new wire need to be pulled from the road? a quick call to DTE
resulted in an

Do you have a 6,000 sq. ft. home?



Nope, but 50 for a compressor, 50 for aux heat
50 for hot water, on the geo side

then the other 200 for the rest of the house

it adds up quick


50+50+50=150. Do the compressor and aux heat ever run at the same time?
If not the load for those 2 is 50A. What is the 50A for hot water - is
that derived from geo or simple resistance heat. Resistance electric hot
water is commonly a 30A circuit. **What circuit rating does the
manufacturer say is required - or max concurrent connected load? As
others are indicating, 200A sounds way high.

Sounds like your house now runs off 150A separate from the existing A/C.
Why increase that to 200A?

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