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I have the solar string 100 % isolated and disconnected during the test with the multimeter . disconnected at or before the combiner box . As stated by timselectric . I was just thinking that the disconnect needs to be thrown to give the voltage direction . Like a loose ground wire on 220v the...

It was the screen got a new one on order .

I am installing a 7500 wat grid tie system . I am using used panels . I got everything installed and i am getting positive on the ground wire when grounded to earth ground . I took total voltage and counted back panels to find the bad panel . I then ran a jumper to that panel to be sure it was...

I have some panels on the roof . I get a ground fault on the panel side . I am going to go up and check every panel to see what is going on . I got one on the ground . I get good watts and amps . When I cross one power cord with the frame it makes the multimeter move about 10% of the wats . My...

Positive I get about 1/2 the volts to earth ground . from the neg I get about 1/2 to earth ground . I dont get a ground fault on the inverter . It is a string inverter . No microinverters . If i take the string down to 1/2 the panels the voltage moves to 1/2 the panels again . 1/2 the voltage...

I have a new sunyboy grid tie that can hook to the grid and feed the grid . It only connects at low voltage . if i disconnect at 4000 watt it wont reconnect and displays error 3501. I isolate the two strings one at a time and still the same error . That leads me to think the issue is something...

I powered it up today . The Neg wire had voltage . I counted back and it was panel 10 . I could not change it so i let it run . Tonight the voltage dropped because of weather and it moved to panel 12 . There is no ground fault on the inverter . I guess let it run and see what happens . It may be...

I grounded to the rails . not each panel .The ground wire goes bock to its own grounding rod . I could easy do each panel I just never thought it was a issue . I have a 2nd set that is just grounded to the steel roof and works ok .

I found my sunnyboy dead today . It had one wire lose on the 220 v ac side . I fixed it and fired it back up and it is dead no led or anything . It is like it is stuck in a sleep mode . Is there a away to get it going or is it toast ? all ac and dc volts are ok . thank you