Do not do this under any circumstance. It will not only fail to light properly, but may be a potential fire hazzard. A 175W bulb is designed for less then half the amperage of a 400W bulb.
Thanks,
Because I am waiting for My 400w bulb and I have a 175 Blueline that I was going to put in there until my 400 comes. I am glad I asked the question before I did it.
PS.- Not to contridict, but are you sure it wont work?
Nope, it won't work. Many of the internal part specifications for bulbs are designed to handle the heat and conductance of a particular wattage rating: too little power and it will not fire up; too much power and it may burn or explode.
hi.
The 400W bulb won't light up if you drive it with the 175W ballast. I am sure people in ANSI (MH specification organization) will love to hear from you guys who want to do these experiments.... :lol: