otrfun wrote:
BFL13 wrote:
My PowerMax converters (100a, 75a, 55a) have all met and exceeded their amp ratings (103, 76, 56). There are two main reasons for not reaching converter rating:
1. Using #8 output wiring. Needs #4. Their instructions are not clear about that.
2. Low 120v input. It runs but at lower amps . . .
When I used my 60a PowerMax, input voltage was 122v under full load. Output was connected to several different discharged batteries and dc loads with 3 ft. long, 2 gauge cables. Output current would never exceed 53-54a. Same loads connected to a PD converter produced rated current.
I'm not saying PowerMax converters in general do not produce their rated current. What I am saying it's possible PowerMax may have quality control commensurate with their pricing.
I have no way of knowing about that. You must be annoyed with your unit though. There is a warranty, but I remember with my busted Parallax, it was a hassle where I had to pay to ship it back to them on the off-chance they would find something wrong with it, etc. I chose not to bother. Don't know how it works with PowerMax.
Meanwhile, if the PD was not when using the same #2 cables as the PowerMax, might be worth checking the #2 connections. Must be an adapter to the lug to get it in the #4 converter terminal that could be the culprit.
Back in the day we had lots of posts about PDs not meeting rated amps and failing to hold constant amps in Bulk. Salvo used some graphs to show that eg. Then a guy posted his graph that showed his PD doing ok where he used short fat wire. I never have had a PD to do my own measurements.
