My HVAC guy is telling me I need a 25 amp breaker and a 25 amp disconnect for my soon-to-be-installed central air compressor. I've asked him for more details but he's less than forthcoming.
My assumption is that I will install:
- - a double pole 30 amp breaker on my breaker box (30 amp because they don't sell 25 amp breakers at my local big box store)
- I'll run 10/2 NM from said breaker to a junction box on the interior of my house near the exit point. In that junction box, I'll splice to a weatherproof conduit and run out to the disconnect box.
- The disconnect box will be a 60 amp disconnect (because, again, that's all they sell at the big box) but I'll get a fused version and put 25 amp fuses in there.
Hopefully the HVAC guys will take it from there. Am I way off? Is a 30 amp breaker too much for the 25 amp requirement that my HVAC guy spec'd?