I have just had a contractor install a PV system to my home.
I am having a problem with the installation of a PV system to my three phase supplied house, I am a little concerned at how it has been implemented. But I doubt my expertise. I have not acquired any new qualifications/training since the 16th & introduction of 17th Edition, so I may be well behind the times. This was brought home due to having to call in UK power networks, when the installer removed and knocked off the tabs on all three cutout fuses & broke the neutral cover. I voiced my concerns to the UK Power Networks Engineer who stated it wasn't unusual and no one any longer checks.
One thing which seems apparent is that the system has all been wired before the master switch into the house! Even the manufacturer in their installation drawings wires it after the master switch. This means that the mains to the pv/battery inverter system has to be switch separately to the house? I had to point this out to the chap who came to rectify the problems (not the same chap who installed), as he was about to work on the system having only thrown the master switch.
So supply comes in through the three cut out fuses, to the original meter, where the monitoring clamps are clamped, after which it divides;
- set of tails to the main breaker and onto individual phases rcbo/rcd/DISTRIBUTION BOARDS
- the other set of tails go to the pv system & its breakers (missing the main breaker)
It seems wrong to have wired in this fashion, but so much has changed since I did my own 16th Edition! Please can you advise if this is acceptable.?