Why can't you run two MH bulbs off one ballast

[StirCrazy]

Originally Posted by Bob_I

Although the explanation is not fully correct, as resistance rises with temperature increase, I will not try my explanation. It is best left alone. If you do not have a supply of free bulbs, don't even think about it.

um I think you better check up on that Bob as we were tought almost all conductive materials decrease resistance with increase in tempature, even had to do a few labs to prove it.

mind you the books we were using were probably written in the 60's... hmmm maybe the same ones you used

anyways don't try it, I saw the result of trying to run a 250 off a 400 watt ballast. just a waist of bulbs.

Steve