Could someone give me their calculation on annual operating cost difference between the following fixtures.(13) 500W quartz halogen floods and (7) 100W metal halide along with (6) 175W metal halide floods. The ballast rating for the MH's are as follows 100W=2.6A @120V, and the 175W=1.9A@120V. The 175's are a quad tap and the 100's are a straight 120, this may have something to do with the lesser input even though the output wattage is higher. Assume KW/hr is .09. Thanks much, what I figured was about $870 less to run the MH's, Thanks.
operating cost
- Thread starter nizak
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