said by nunya:I'd install a "relief" panel for the HVAC equipment (near the HVAC equipment). One nice thing about the TM4020 is it is rated for 175 or 200A branch breakers.
It is amazing how the most simple solution can be elusive. I have a similar issue as the OP where I need a 220 slot to run a "proper" 220 to my garage. My heating/cooling takes 6 slots in my panel. Moving those to a "relief" panel, as you called it, would be a great solution.
What amperage panel would be needed to accomadate three 220 breakers @ 60 amp, 30, amp and 30 amp? I am not familiar with the steps in panel sizes.
I have a Cutler Hammer ch32b200j and it looks like it will take up to 150 AMP branch breakers.
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