GUNNING
Senior Member
- Location
- Gainesville, Florida
Using 220.83(b) do you need to add both the condenser and the heat strips at 100% when figuring out service size for adding a heat pump to a house.
I have
12 amp heat pump @ 240v = 2880 VA
5kw strips
Other loads
754 sq foot house at 3 VA/sq ft
small appliance loads per 210.11(C) of 4.5Kw
fridge at 540 VA
water heater 4.5 KW
stove @ 8KW
Dryer @ 5KW
washer @ 1.4 KW
100% of the a/c is 7880 VA
100% of the Other loads is 26182 VA
A/C + First 8K + 40% of the rest of the other loads =
7.9 KW + 8KW +40% of 18.2KW = 22.5 KW
Does the heat pump need to be rated higher because its a hermetically sealed motor or take the name plate max fuse value? Do I add the heat strips to the heat pump to get my A/C load?
Does the math look ok? I already messed this up once, don't need to publish my mistakes twice down there.
I have
12 amp heat pump @ 240v = 2880 VA
5kw strips
Other loads
754 sq foot house at 3 VA/sq ft
small appliance loads per 210.11(C) of 4.5Kw
fridge at 540 VA
water heater 4.5 KW
stove @ 8KW
Dryer @ 5KW
washer @ 1.4 KW
100% of the a/c is 7880 VA
100% of the Other loads is 26182 VA
A/C + First 8K + 40% of the rest of the other loads =
7.9 KW + 8KW +40% of 18.2KW = 22.5 KW
Does the heat pump need to be rated higher because its a hermetically sealed motor or take the name plate max fuse value? Do I add the heat strips to the heat pump to get my A/C load?
Does the math look ok? I already messed this up once, don't need to publish my mistakes twice down there.