Nelson electric
Christian
- Location
- Sacramento, ca
- Occupation
- Electrician
Does an air conditioning/ heat pump unit require a fusible disconnect or will a HACR breaker within 50' and line of sight suffice for the disconnecting means?
A breaker is fine. Non fused is fine too - unless unit specifically requires fuses. I haven't seen that in a long time however.Does an air conditioning/ heat pump unit require a fusible disconnect or will a HACR breaker within 50' and line of sight suffice for the disconnecting means?
Not so. The fuse/breaker setting is anywhere from 175 to 250% of rated current, to allow starting without nuisance tripping.The fuses were to protect the motor from an overload. The HCAR Breakers have that built in. I'm told...
A lot of HVAC guys still use the fusible. But as stated above not required. If you did use a fuse , you might want to use the dual element type .
That's what I thought, but I had a HVAC guy tell me that they all have to be fused. I told him the HACR breaker protects the same way.
Thank you all for your input.