Solar system 5 years old suddenly tripping consumer unit

Yorkie14 · Oct 5, 2016

Hi we noticed our solar must have fused and tripped out the consumer unit for most of September which is really annoying - all that sun! we reset and now it has done it 3 times over this week. What could be the cause? we have never had any problems. We live in Swindon but the installation was done by a Taunton company. Photo of set up attached. Would appreciate some ideas of what to do probably out of warranty...

telectrix · Oct 5, 2016

not into solar, but my first suspect would be the inverter. is it tripping a MCB or a RCD? check out out electricians directory and find one who does solar close to you. a short visit to ascertain the problem is not expensive.

Gavin A · Oct 11, 2016

what's it tripping? RCD or MCB?

Electric Yo · Oct 11, 2016

If the RCD is tripping ( this protection device has a test button on it) then it could just be a case of changing it for a RCD that has a higher mA tolerance. 30MA can nuisance trip a lot on solar PV inverters. If an MCB is tripping it would be a good bet it is an internal fault in the inverter. What inverter do you have?