My panel is full, so I have to put in a subpanel to get any room for shop circuits.
I picked up a 100A 2 pole for the main panel to feed a 100A Square-D main lug panel with 6 positions (12 circuits). This is where all those years working with dad as an electrician really pay off.
I figure I’ll need:
1 – 220v 20A circuit to cover my saw and any reasonable upgrades.
1 – 220v 20A circuit for future dust collection (starting off with Shopvac)
2 or 3 120v 20A circuit for general outlets for hand tools and smaller tools like the planer, bandsaw, router, etc. I’m figuring one circuit per usable wall. I can only use so many at once.
1 – 15A lighting circuit (the lighting is in, but I will switch it over to the new panel, this will also help make room for the subpanel feed breaker)
1 – 15A dehumidifier circuit
1 – 15A utility circuit for things like Air filter (3A) , and future small add-ons.
I realize this adds up to over 100A but it is okay to overload the panel considering not everything will run at once. Dust collection, lights, air cleaner, dehumidifier and one tool at a time. In winter, maybe a space heater.
Anything else anyone can think of that would run concurrently with the above list that I forgot?
-- Eric ---- Wise Words T.B.D.