I have two large AC units with electric heat strips requiring several large breakers for a 200 amp service. This is new construction.
It’s actually cheaper to install a 100 amp panel as a main panel for the attic space to serve all the needs of the units and leave the 200 amp panel for the rest of the house.
The 100 amp panel is closer to service entrance then the panel box so wire by foot is also cheaper.
I’m referring to heat pumps in the air handlers. I was debating costs of running the wires for two units to main panel vs one sub panel. Also a sub panel means more space in the main panel.
The attic is conditioned space by spray foam and is accessible by pull down stairs as required by local codes. The entire attic has a subfloor which air handlers will sit on.
Can I install a 100 amp main breaker panel like this in an attic space?