When I was setting up my fish room I had an electrician come in to put in a 220v line to run my heaters off. (with permission from my landlord of course) The panel I've got wouldn't support it so we looked at alternatives.
My reasoning was, I could run two 1500 watt heaters off a 220v line because at 220v they only draw 750 watts but, the hydro bill still shows that as 1.5Kwh. My thoughts were that I could heat my room more efficiently with two space heaters rather than one.
If I were having a professional fish room set up, I'd probably look at 220 for the lighting, but not for anything else. And remember the rule.. (which I forget) but isn't it like.. never run more than 80% of your breakers rating on one line? IE, if you're running a 20amp breaker, never run more than 16 amps on that line.
Doug
|