help please reduced output on hot days

[Gavin A]

a picture of the array would work wonders tbh

 

[billybee]

i will have a go

 

[billybee]

hope this helps

 

[Gavin A]

erm, these are A-Sun panels yes?

they only seem to have 240Wp full black panels listed on their website, which might explain your reduced output levels - on top of everything else discussed.

Download base A-SUNENERGY.COM

 

[billybee]

http://www.a-sun.co.uk/download/ASUN250-MB_EN.pdf

 

[billybee]

A-sun | Products

 

[Gavin A]

ok, sorry, I'm not sure why their .com website doesn't list them.

 

[billybee]

cos there crap lol essecally if the suns shinning

 

[jason121]

PV SOL produces a good output for ASUN, on paper look good

 

[billybee]

on the right day there peaks are impressive and i supose add that to an inverter that can run above its soposed max output you do hit over and above 3kws but they seem to be affected alot more than other panels by heat witch to my dismay i didnt know anything about. but once the string issue is sorted i should see some improvement on out put. i think part of my issue was to do with lack of info i expected after i got my first big day 17kw and it was pritty mixed clould and sun. i was expecting well into the 20kw's on full sunny days and when it didnt happen i was very suprised.

 

[Worcester]

A-Sun probably don't nescesarrily list them becasue they don't make them - they contract it all out, just read how they word it on their websites very carefully

 

[jason121]

i wonder if because all black panels, someone did say the black panels are affected more by heat

 

[Worcester]

Those panles look mighty high off the the roof - AHA they used hanger bolts on a slate roof... thread goes of at a tangent, think I'll shut up ...

 

[Worcester]

And is that a loose / unfixed DC cable I can see just to the left side of the right hand velux?

Those aren't your (unsecured) cables coming down on the very right hand side on next-doors roof are they?

 

[moggy1968]

it looks to me as though you will almost certainly get some shading off the mains cables (with the shrouds off!)
Those look as though they could well be more than 200mm off the roof.