Charging a Battery Bank
I am planning on upgrading my batteries to 4 6v batteries wired in series and parallel to have a 12v system with plenty of Amp Hours. There is a ton of information on how to wire things up but nothing...
Forum Discussion
I would not be concerned about the 15a plug vs 20a plug business with the 75 or the 100. They have come with 15a plugs for years with no problems. However, they may go with 20a plugs on some sizes in the future to meet the Rules for using these things in installations where they will be running continuously (as defined by the Rules--some number of hours---I don't know those rules) Apparently the 15a plug is ok for a "portable" that size under the Rules. No idea myself.
Yes, PM is going to update their spec sheet one of these days. The big thing is that the 75 amper is not PF corrected (error in ads) but the 100 amper is for sure. I don't know the 120 amper, don't have one.
Testing with my Kill-A-Watt, running them from my Honda EU3000is which is rated at 2800VA and has 15a duplex and 23.3a ("30a" twist receptacle) I got:
15a plug, 100amper--1910VA, 122.8v, 15.57a, 1854w input with PF 0.97 while it was doing DC output of 102a, 13.95 battery (rising v of course)
15a plug, 75amper--1693VA, 123.8v, 13.64a, 1241w input with PF 0.73 while it was doing DC output 75.0a, 14.08 battery (rising)
15a plug, 55amper---1383VA, 124.7v, 11.06a, 980w input with PF 0.70 while it was doing DC output 56.8a, 13.7 battery (rising)
BTW-I was lucky not to fry my Kill-A-Watt going over 15a :)
Results may vary due to "your" input voltage. The Honda was at 126.8 volts unloaded. You see above how the loaded voltages dropped more with more load. That in turn affects the VA somewhat. It gets complicated.
People on this forum report they can run their PowerMax 75 ampers with a Honda 2000 (1600VA) but it must be getting near max. Hondas seem able to do a bit more than as rated in real life. My 3000 can too. It might matter with the 75 at high altitude though.
Yes, PM is going to update their spec sheet one of these days. The big thing is that the 75 amper is not PF corrected (error in ads) but the 100 amper is for sure. I don't know the 120 amper, don't have one.
Testing with my Kill-A-Watt, running them from my Honda EU3000is which is rated at 2800VA and has 15a duplex and 23.3a ("30a" twist receptacle) I got:
15a plug, 100amper--1910VA, 122.8v, 15.57a, 1854w input with PF 0.97 while it was doing DC output of 102a, 13.95 battery (rising v of course)
15a plug, 75amper--1693VA, 123.8v, 13.64a, 1241w input with PF 0.73 while it was doing DC output 75.0a, 14.08 battery (rising)
15a plug, 55amper---1383VA, 124.7v, 11.06a, 980w input with PF 0.70 while it was doing DC output 56.8a, 13.7 battery (rising)
BTW-I was lucky not to fry my Kill-A-Watt going over 15a :)
Results may vary due to "your" input voltage. The Honda was at 126.8 volts unloaded. You see above how the loaded voltages dropped more with more load. That in turn affects the VA somewhat. It gets complicated.
People on this forum report they can run their PowerMax 75 ampers with a Honda 2000 (1600VA) but it must be getting near max. Hondas seem able to do a bit more than as rated in real life. My 3000 can too. It might matter with the 75 at high altitude though.
