Solar system tripping out mains.

[PC Electrics]

And I'm pretty sure a Hager RCBO will fit into an M2 board ok.

 

[yellowvanman]

Should mix MCBs of a different make into a consumer unit!

 

[dansk]

weres the CPC? then i wonder whats down for the R1+R2 test? its difficult to see.

 

[lennyg]

I'm out of my depth a little here.... would any photos help?

 

[MorganPVI]

A photo of the wires from the CU heading to the loft would be useful/

 

[Gavin A]

weres the CPC? then i wonder whats down for the R1+R2 test? its difficult to see.

I think I spy a green and yellow cable running up the side of the consumer unit next to the SWA(?) cable, which I'm thinking might be coming from the AC isolator, which would slightly improve the situation compared to my first thoughts, but using the dbl insulated single core PV cable in that way seems dodgy as to me due to the lack of cpc as you say.

 

[dansk]

well theres always more than one way to skin a cat as they say, but it just doesnt look good and most electricians wouldnt do it like that i guess.

 

[lennyg]

I think I spy a green and yellow cable running up the side of the consumer unit next to the SWA(?) cable, which I'm thinking might be coming from the AC isolator, which would slightly improve the situation compared to my first thoughts, but using the dbl insulated single core PV cable in that way seems dodgy as to me due to the lack of cpc as you say.

The green cable runs from the isolator to the CU, so I assume that the cable from the inverter in the loft to the isolation switch is twin & earth.

 

[lennyg]

A photo of the wires from the CU heading to the loft would be useful/

Can you please clarify? The cables from the CU run to the meter, then the isolator, then to the loft. What would help you see?

 

[Earthstore]

What area do you live, if someone on here is local they might pop around and advise you.

I hope this helps.

 

[lennyg]

I live near Prescot on Merseyside. I am sure that the people who fitted have done so with the best intentions, it's just there have been some fundamental things that I understood that don't seem to have been applied hence the posts on the forum.

 

[moggy1968]

with regards to posts 29 and 30:
I don't see how you can use DC cable on the AC side. whilst it may work it's not approved or certified for that as far as I am aware.
why would you want the RCBO to work in reverse?
You probably don't need one anyway, that hasn't been clarified yet.

 

[BruceB]

Solar cables will be fine in principle for ac. The dc spec is more demanding in terms of insulation voltage, double insulation, flexibility and resistance to uv degradation than standard ac cable. But it might serve to confuse a future maintainer.

 

[moggy1968]

they may be fine, but if they aren't tested, certified or approved for AC so you can't use them.

 

[Glen Powell]

Talking of cables our recent inspection said that we should use twin and earth however this would mean that it would be difficult to Identify i.e. different to a ring main. I know DIY electrics is to a degree not allowed but if Joe Blogs decided to add a plug socket or spur and just picked out the first 2.5mm twin and earth that he could find then this could be a problem.

Under identification I suppose you could use a thicker gage but then it could be seen as the shower cable or something (not that you would use 10mm on standard PV).

We used white flex as it was easy to identify as a different circuit, what are your thoughts on this.