Unknown Light Wattage

rufus thomas

rufus thomas

Member
Hi guys,
I've been given a metal halide balast and bulb. It looks like one of those industrial jobs with a built in balast. Problem is I can't find any refrence to power/wattage on the balast or the bulb? I'm guessing its 400 or 600 watt. Can I tell the wattage by the size of the bulb alone?
Thanks in advance.
peace.
Rufus.
 
StoneInLove

StoneInLove

Well-Known Member
IIRC, the inner element was bigger between a 1000 and 400(never personally looked at a 600). Look for a lable on the ballast section(might have to disassemble some). Usually, there is at least something like an ansi spec number somewhere. I wanna say 1000hps is an s57 or 87.
S.
 
ganjamisfit

ganjamisfit

Member
Its probably a 400w because they are so abundant but you shouldnt guess. If you cant find any documentation on the outside of the ballast start taking it apart.
 
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