On Tue, 10 Nov 2009 21:00:23 -0800, "Bill Noble"
wrote:

If it happens again, spin grinder fast by hand and turn on, it will probably
then just spin up to speed.

I have a buffer like that. 2 HP, 120V 3450 RPM single phase motor. It
actually can self-start, but when doing so it draws peak current of
195 amps for part of a second. Sometimes the 20 amp breaker can
ignore that, sometimes it can't. I just give the wheel a brisk spin
before hitting the green button.