Charger selection help please

BFL13 wrote:
PT are you saying that setting the Magnum to 15a input is the same thing as plugging a 125 amp charger into a 15a receptacle in a 15a circuit?

The 100 amper was pulling 122.7v, 15.57a , reading 1910VA and the watts with that was 1854. PF 0.97

Scaling up to 125 amps output, that 15.57 input would be 19.46a

I don't know why the Magnum quit when set at 23a running the 127a charger output. 19.46 is way under 23.

Were there other 120v loads on the Magnum besides the charger?

Did the Yamaha 3000 (23.3? ) pop or was it just the Magnum at 23 that popped?

My Honda 3000 (23.3) runs my 100 amper (15.57) and my 55 amper (11.06) total 26.63. I don't know how it can. I guess the combined load pulls down the input voltage more than it is when they run individually, so the combined VA is lower than the individual VAs added. Anyway it runs.

So really, the Yamaha at 23 should have run the Magnum's charger at 127 amps no sweat. Perhaps it is all about that Magnum (which was the duff one? )

Magnum 3000 Specs are listed as follows:

Continuous output at 25° C 125 ADC
Charger efficiency 87%
Power factor > .95
Input current at rated output (AC amps) 18

This seems in line with what I see at max charging current on mine, definitely never hits 20 amps. On the Magnum remote you set max input amps and it backs off the charger if loads + charger exceed, on the hybrid model that also determines when it load supports. I have mine set to 30 and if at max charge rate then A/C kicks on it backs down and keeps it under 30 total, responds pretty quick.

If OP is anal about batteries hard to beat the Magnum with fully adjustable Absorb/Float/Eq volts temp compensated and Absorb done based on time or amps or SOC (with BMK). Not cheap though, but you do get a nice inverter as a bonus.