Son Agro Ballast Q for Electrical Engineers

[Bryan]

Forgot about the Venture ballast. It has a rated power factor of .9 drawing 4.55 amps

http://www.venturelighting.com/Balla...ame%20Page.htm

In order of efficiency we have

Magnatek/Universal 4.3 amps power factor unknown
Venture 4.55 amps 0.9 power factor
Advance 5.3 amps 0.8 power factor.

I guess the power factor of the Magnatek exceeds 0.9 which i didn't think was possible with HID ballasts. Hmm

Originally Posted by StirCrazy

Bryan, My guess would be that the power factor on the magnateck is 0.9 which would account for the differences..

Steve