ballasts-120V or 240 V
I plan to buy a 400 W electronic ballast for my HID lighting. There are 120V or 240V models for the same price. I have read that the 240 V ballast will run cooler and more efficiently. However, I will have to get an electrician to install a 240 V outlet. Any idea if the better light output and reduced energy costs of a 240 V ballast would outweigh the cost of installing a 240 V outlet? I guess another consideration would be if less heat is produced from the 240V model, the AC costs of cooling the grow room would be somewhat less.