innews: snipped-for-privacy@4ax.com:
Do whatever you want, ( so far as grounding the wye neutral as opposed to simply going delta )--but for sensitive 1ph loads best to use an isolating transformer, grounding either one side or the center tap on the secondary side.
Saparking brushes, pretty sure is what john means above...
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Sidenote :
Them old electromechanical clocks ( telechron comes to mind ) actually come in pretty handy as tool for use in verifying generator output frequency....especially them one what has a second hand...
Compare with a digital clock, IOW if the old synchronous clock reads say ten seconds slow then this indicates that your generator is running 50 cycles instead of 60.