DP RCD for Solar PV?

We are currently installing solar pv systems, and have had a third party at one of our installs carrying out an EICR. They have flagged a C2 for the RCBO we have used only being single pole.
In section 712 of BS7671 ‘Special Locations – Solar PV’ we cannot see a regulation that states that a double pole RCD is required. Any advice on this matter would be greatly appreciated.

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  • Section 712 does not refer back to 551.7.1.

    You can't read any part 7 section on it's own - as the introduction (section 700) says, the sections 'supplement or modify the general requirements'.  If a part 7 section doesn't say something on a particular subject then the main parts of the regs apply directly. There is no 712.551.7.1 so 551.7.1 applies unchanged.

    At least that's my take on it!

       - Andy.

  • The regulation NICEIC have directed me to is 712.531.3.5.1.The only reference within this is to 531.3.3 for types of RCD. Although i do understand where your coming from, I have had the same advice from two separate NICEIC technical advisors " 551.7.1 is not applicable in this instance". I don't think there is a black and white answer to this.