On Sat, 16 Jun 2018 09:22:32 -0500, dpb wrote:

On 6/16/2018 9:11 AM, wrote:
...

3HP on a 240V circuit is no problem at all. My Unisaur has a 3HP
motor and I have it on a 20A circuit (12/2). 30A is overkill.

They're using good-efficiency motors to get that; an off-the-shelf
inexpensive or particularly an older used may not...I was deliberately
being conservative.

But 3HP is only ~2400W. A 20A 240V circuit has 4800VA available.
Piece of cake.