chad51
New member
- Location
- Ky, Va, Tn
Hello. This is my first post and I apoligize if this question has been answered somewhere else.
Installation of a 2.5 ton split system heat pump. Breaker box on one end of house, approximately 40 feet, from other end where air handler will be with 15kw electric heat. Outdoor unit approximately less than 30 feet (line set length) from air handler. Air handler to be fed by 2 runs of 6-2 w/ground on 60 amp breakers in main panel. From the air handler, I would like to feed outdoor unit from circuit which only has the 5kw of electric heat on it. Both breakers on heater package are 60 amp breakers.
Question: Can I run a branch circuit from load side of 60 amp breaker which serves only 5kw in air handler to outdoor unit using 10/2 w/ground, and install a outdoor disconnect with a 30 amp breaker as the OCPD at the outdoor unit? Optionally, if a make the circuit a tap circuit and pick up power from line side of 60 amp breaker, would I have to continue with the 6-2 w/ground to the outdoor disconnect or can I still use the 10-2 w/ground, providing I'm less than 25 feet?
By what I've read about wire/breaker sizing for HVAC, it seems I'd would be in code even if I didn't use the 30 amp breaker at the outdoor unit in the branch style circuit, but I wanted to have the recommended OCPD of the manufacturer.
Thanks for any suggestions.
Installation of a 2.5 ton split system heat pump. Breaker box on one end of house, approximately 40 feet, from other end where air handler will be with 15kw electric heat. Outdoor unit approximately less than 30 feet (line set length) from air handler. Air handler to be fed by 2 runs of 6-2 w/ground on 60 amp breakers in main panel. From the air handler, I would like to feed outdoor unit from circuit which only has the 5kw of electric heat on it. Both breakers on heater package are 60 amp breakers.
Question: Can I run a branch circuit from load side of 60 amp breaker which serves only 5kw in air handler to outdoor unit using 10/2 w/ground, and install a outdoor disconnect with a 30 amp breaker as the OCPD at the outdoor unit? Optionally, if a make the circuit a tap circuit and pick up power from line side of 60 amp breaker, would I have to continue with the 6-2 w/ground to the outdoor disconnect or can I still use the 10-2 w/ground, providing I'm less than 25 feet?
By what I've read about wire/breaker sizing for HVAC, it seems I'd would be in code even if I didn't use the 30 amp breaker at the outdoor unit in the branch style circuit, but I wanted to have the recommended OCPD of the manufacturer.
Thanks for any suggestions.