[mcudogs]

Paul, You're not just a pretty face! That's a good idea about extending the B+ down to the mounting holes and also reducing the drilling of the bus bars, both included on next version, see attached.

I've calculated the maximum current for the layout using 4 oz cu and it should be 1200A (120A / FET) with a maximum temp rise of 20 deg C.

Can you tell me the dimensions of the bus bars? I want to check clearances for the components.

I got a quote for 50 off of the power boards and it worked out at about $12 each. I don't really want to do a prototype of the board as it will cost about $160 in one off quantities. I will just have to double check everything before ordering them.