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View Full Version : Will a hps bulb work with the same ballast that metal halide work with

4xfourgazm
Feb 19, 2010, 01:47 AM
I have a hps light with ballast 400w.can I use a 400w metal halide bulb
tkrussell
Feb 19, 2010, 03:29 AM
No, HPS has a starting aid built in, and the ballast is wound a bit differently.

HID lamps and ballasts have an ANSI code that must match.