Ok more info for everyone,
is about a year and a half old and has been working flawlessly under my old solar set up which was a single
300w panel leading to the mppt controller which is a 75/50 blue Starr victory type (50a) and into three 130ah 12v agm
The old panel was on my Davits
and as I've added a monitor windvane
and had to go and the panel is too bloody big to go elsewhere (2m-3m).
Therefore I bought 9 new 60w mono panels and have divided them into three sets of three (I've only wired in 6 of the 9 so far totalling 360w) and have hinged them off the rails at the stern. (See image)
I've also added a second battery bank of agm
batteries of 400ah and have separated them from the older batteries with a battery 1-2-both switch.
The output from the regulator
now goes to a 1-2-both switch also so I can allocate where the charge goes.
Ok there are the specs. I was a little reluctant to write all that on here because I don't want to get side tracked into a discussion about how we all wire out solar grids.
Some more info answering people's questions.
The voltage from the panels is coming out at anywhere from 21.6-22.8v and the battery voltage is down to 11.6 as the panels have been no functional for three days now. Took me a while to realise it all wasn't working properly. When the battery cable from the regulator is disconnected from the batteries the cable reads solar voltage (21v) and once connected to the batteries it drops right down to battery voltage and doesn't increase at all. It's worth noting this was happening when the batteries were at 12.1v also so I don't believe it's a low battery issue. I've left it hooked up for a sunny day and it didn't increase the battery voltage.
Also to test it properly I've unwired the isolation switch and run battery cables
directly from the reg to the different battery banks and have had the same voltage drop on both when directly connected from the regulator.
I've also tested all the panels separately and checked that non of them are wired incorrectly. All the panels are wired in parallel together and run into the reg with an appropriate cable. I've also tried wiring up my old 300w panel and that too is not charging. I'm thinking it must be the reg even though it's got all the correct lights working and no sign of warning. Hmm,,
It's morning here and I'm about to start working away on it again but th out I should add some more before I do. Will let everyone know what happens today. Should have more info soon.