Solar PV Installations & EICR's

I'd be interested to hear how others are handling solar PV installations as part of an EICR, especially the DC side.

The AC connection to the inverter is relatively straightforward to include, but the DC wiring, roof array, connectors and DC isolators are more challenging, particularly where access is limited or the inspector does not have specific PV competence.

The question was prompted by recent press reports of a school fire where the solar installation was reported as a possible cause. The system was said to have been installed around 10 to 12 years earlier, so in theory may have been through more than one periodic inspection cycle.

So, in practice:

Do you include the PV DC side within the EICR, or limit the inspection to the AC supply circuit and inverter connection?

If excluded, how do you word the limitation?

Would visible PV defects still be coded if outside the agreed scope?

Where roof access is not available, do you recommend a separate specialist PV inspection?

And more broadly, should PV systems have their own defined periodic inspection regime, especially on schools, commercial buildings and higher-risk sites?

I’m interested in how this is being handled in the real world, because there seems to be a possible gap between a building having an EICR and the PV system being meaningfully inspected.

Parents
  • I'd be interested to hear how others are handling solar PV installations as part of an EICR, especially the DC side.

    The AC connection to the inverter is relatively straightforward to include, but the DC wiring, roof array, connectors and DC isolators are more challenging, particularly where access is limited or the inspector does not have specific PV competence.

    The correct answer is in the NOTE to Regulation 712.6.101 of BS 7671, that is, use relevant parts of BS EN 62446 series ... although whether this happens in reality is of course open to question.

    BS EN 62446-2 should be used for maintenance, and relevant parts of BS EN 62446-1 and BS EN 62446-2 for periodic inspection and testing.

    PV systems may well require more frequent inspection and testing (and maintenance) than the AC side of the electrical installation ... certainly this will be the case for many private domestic installations.

  • PV systems may well require more frequent inspection and testing (and maintenance) than the AC side of the electrical installation ... certainly this will be the case for many private domestic installations.

    I think most domestic PV owners work on an "if it ain't broke, don't fix it" basis.  If the inverter is generating, the most that needs doing is the occasional washing of the panels. Nothing will be inspected, ever.

  • Almost certainly.

    Here on the sunny south coast, I have never seen anybody washing panels (although they might be reachable by window cleaners with those long fibreglass poles) and no obvious inspections.

  • The correct answer is in the NOTE to Regulation 712.6.101 of BS 7671, that is, use relevant parts of BS EN 62446 series ... although whether this happens in reality is of course open to question.

    BS EN 62446-2 should be used for maintenance, and relevant parts of BS EN 62446-1 and BS EN 62446-2 for periodic inspection and testing.

    Thank you, Graham.

    I suggest that on that basis, an EICR to BS 7671 would concern itself with everything on the a.c. side of the switch, and BS EN 62446 would be used for a separate inspection of the panels, inverter, battery, etc. up to the switch.

    So two separate I&Ts, but they could, of course, be done together.

    I guess the official answer is that it's a matter of contract as to what's included and excluded from a particular job.

    Agreed. It would seem reasonable to include a visual inspection of any accessible parts of the solar PV equipment.

Reply
  • The correct answer is in the NOTE to Regulation 712.6.101 of BS 7671, that is, use relevant parts of BS EN 62446 series ... although whether this happens in reality is of course open to question.

    BS EN 62446-2 should be used for maintenance, and relevant parts of BS EN 62446-1 and BS EN 62446-2 for periodic inspection and testing.

    Thank you, Graham.

    I suggest that on that basis, an EICR to BS 7671 would concern itself with everything on the a.c. side of the switch, and BS EN 62446 would be used for a separate inspection of the panels, inverter, battery, etc. up to the switch.

    So two separate I&Ts, but they could, of course, be done together.

    I guess the official answer is that it's a matter of contract as to what's included and excluded from a particular job.

    Agreed. It would seem reasonable to include a visual inspection of any accessible parts of the solar PV equipment.

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