DinoV

Hi all. Finally had some more time to tinker with my system and solve the problem. I installed a new 6mm solar DC cable and pulled out the old 4mm cable and connectors. When I opened the old male and female connectors I noted that the cable pulled out of the connectors VERY easily. On opening I noted that the cable had not been well crimped all those years ago. New cable + new connectors + good crimping means that I now have almost perfect voltage at my invertor (166V) with full sun. Today it is mostly cloudy and I am getting 135V at the invertor.
Thank you everyone for your kind input. I think we can close this topic as "solved".

Hi all. Finally had some more time to tinker with my system and solve the problem. I installed a new 6mm solar DC cable and pulled out the old 4mm cable and connectors. When I opened the old male and female connectors I noted that the cable pulled out of the connectors VERY easily. On opening I noted that the cable had not been well crimped all those years ago. New cable + new connectors + good crimping means that I now have almost perfect voltage at my invertor (166V) with full sun. Today it is mostly cloudy and I am getting 135V at the invertor.
Thank you everyone for your kind input. I think we can close this topic as "solved".

Hi all. Finally had some more time to tinker with my system and solve the problem. I installed a new 6mm solar DC cable and pulled out the old 4mm cable and connectors. When I opened the old male and female connectors I noted that the cable pulled out of the connectors VERY easily. On opening I noted that the cable had not been well crimped all those years ago. New cable + new connectors + good crimping means that I now have almost perfect voltage at my invertor (166V) with full sun. Today it is mostly cloudy and I am getting 135V at the invertor.
Thank you everyone for your kind input. I think we can close this topic as "solved".

Hi all. Finally had some more time to tinker with my system and solve the problem. I installed a new 6mm solar DC cable and pulled out the old 4mm cable and connectors. When I opened the old male and female connectors I noted that the cable pulled out of the connectors VERY easily. On opening I noted that the cable had not been well crimped all those years ago. New cable + new connectors + good crimping means that I now have almost perfect voltage at my invertor (166V) with full sun. Today it is mostly cloudy and I am getting 135V at the invertor.
Thank you everyone for your kind input. I think we can close this topic as "solved".

Hi all. Finally had some more time to tinker with my system and solve the problem. I installed a new 6mm solar DC cable and pulled out the old 4mm cable and connectors. When I opened the old male and female connectors I noted that the cable pulled out of the connectors VERY easily. On opening I noted that the cable had not been well crimped all those years ago. New cable + new connectors + good crimping means that I now have almost perfect voltage at my invertor (166V) with full sun. Today it is mostly cloudy and I am getting 135V at the invertor.
Thank you everyone for your kind input. I think we can close this topic as "solved".

Disconnect the cables pos and neg at the panels and join the wire on the roof with a connection block. Go down to the dc breaker switch the breaker off and measure on top of the breaker setting your tester on resistance (omh scale x1) put the leads together and check the resistance of the leads then measure the resistance on the wire and subtract the first reading from the resistance measured on the breaker. Then disconnect the wires at the bottom of the breaker then switch the breaker on and measure at the bottom of the breaker the resistance again. Record your reading there should be no diffrence between the 2 readings. Your resistance reading should be close to 0 omhs for your distance as 4mm² copper wire is 4.3 ohms/km.

You should be able to at least measure 2 panels in series at a time. Maybe that'll give you an indication of whether the problem lies with the panels or elsewhere.