pharma, i wouldnt recommend a 100a sub on 6 awg wire.
especially being a grow would be considered a continuous load. (3+hrs of use)
i, personally, wouldnt go any lower than #3awg feeding a 100a sub.
but thats just me.
I'd take your advice any day, Frank. I guess I know which online wire size calculator not to use again.
Gawd I hate how a general anesthetic fucks with the memory. I had another surgery a few months ago, five hours of general anesthetic, and stuff that used to be there just isn't there anymore. ...probably best if I leave wire size and code questions to others from now on.
PC