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jrnymn7's avatar
jrnymn7
Explorer
Aug 16, 2014

when should a powermax pm4b drop into float mode

Hey everyone... hope your summer has been as enjoyable as mine. (...loving the cooler than normal weather!!!) I recently installed a new pm4b 75amp charger and Trimetric meter. My batteries are 4 T...
BFL13's avatar
BFL13
Explorer II
Oct 11, 2014
The 9a includes the PF? So 9a x 108v = 972VA

Assuming 0.8PF--- then 972VA = 778 watts

Meanwhile a 35a Vector spec says input required is 600 watts

So a 45 amper would be 45/35 x 600 = 771 watts (near that 778 above)

So the 9a you got is not crazy. What is crazy are all these spec tables that confuse PFs, watts without saying what amps and volts go into the watts number, and confusing "efficiency" with PF. (Note the PF corrected PowerMax ones are given 94% "efficiency" vs 84 for the non-PF ones)

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