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Thanks for the replies, I have ba strong suspicion it is almost certainly the fridge freezer. I've isolated it by running it solely from the mains overnight & not had it trip since. However, I'm still somewhat confused by why it would only happen when the inverter is charging, I've had the...

Unusual installation, I have a solar installation (DIY) with battery backup, it powers a no. of circuits within the house separate to the rest of the mains circuits, so, effectively a lot of the house is off grid. There is an RCD on the mini consumer unit which is powered by the inverter, no...

@bladerunnerpv , thanks for the explanation, makes a lot more sense now, I hadn't thought about overall capacity & the fact that you'd get into 3 phase etc.

Someone who's never made a mistake has never made anything!

My understanding of dual MPPT, which is common now on modern inverters is that you can run separate strings producing at different times of day, eg East/west being the obvious example. To me the advantage of East/West is that you get a little less overall power than South, but you get it for...

Just wondered if there was no other reason as OP's situation he has 8kW of panels, I would have thought there are dual input 8kW units out there surely for less money than 2 x 5lW units? Or are there other advantages, otherwise just seems unnecessary duplication/complication?

Probably a stupid Q, but my initial thoughts on seeing the post is "could you not use a single hybrid inverter with 2 MPPT inputs". The 2 MPPT's seems to be a common thing nowadays, would that not be far cheaper & simpler or am I missing a dirty great piece of the puzzle? I know vastly less...

So, for CPS registration, what would they be looking for in terms of qualifications etc.?

When you say "registered sparky", that really is what I'm getting at in the original Q - The G98 form asks for qualifications & accreditation - so what qualifications does someone have to have to be classed as a registered sparky? I've seen comment about people having served 5 year...

Bump! Would really appreciate any input guys, apologies for my ignorance, just want to get it right!

Hi, I'm intending to do a DIY install of a small solar system, grid tied, 3.6kW. I obviously need a sparky to do the sign off & would like to discuss the job with him in the first place to ensure we are doing everything "by the book". I can't find anywhere exactly what qualification is needed...

Hi Guys, I've no formal electrical training, A level physics & the first year of my engineering HND was shared with the Sparkies was as near as I've got. Other than that have done most of my home electrical projects occasionally with a sign off from a registered Spark where required. Plenty of...