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New Roof R & R Panels Same position

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  1. #1
    cbg is offline
    Apprentice (new member)
    Join Date
    Apr 2011
    newcastle nsw

    Default New Roof R & R Panels Same position

    Replacing terracotta roof with Colorbond,. Have earth bonded mounting brackets and cable under panels in conduit and no d/c roof isolator have normal d/c and a/c isolators at meter /inverter.Xantrex 5kw 2 strings 11 panels each, Newcastle NSW.
    Quote to remove and refit, requires new roof d/c isolator from one company and not from another company.
    All information I can find would only require this if moving system or upgrading.
    Many thanks in Advance for any information.

  2. #2
    Old Chippy 6K
    Join Date
    Mar 2007


    Depends on the brand of the roof isolator - there were recalls of thousands and not all have been replaced. See NHP Electrical Engineering Products P/L—DC Solar Isolator Switches and Eltech Industries—ISO-MAX Solar Connect DC Isolator and NHP Electrical Engineering Product Pty Ltd—DC Solar Isolator Switches and DKSH Australia Pty Ltd—"PVPower" Branded DC Isolator and Advancetech Pty Ltd—Avanco Brand DC Isolators and Uniquip Industries—PV Array Rotary DC Isolator and Blue Line Solar Pty Ltd—Avanco DC solar isolator switches and NHP Electrical Engineering Products P/L—DC Solar Isolator Switches

    But unless the existing one is faulty or a recalled product then it one can be re-used. But the sparky who quoted might not want to take the risk - as he becomes responsible for the whole system once he starts working on it even ding the work you need as it is seen as being the same as 'moving'.

    The real idiocy is that the roof top DC isolator is not needed at all - Australia is the only country in the world where these are mandated for rooftop PV!

    The Australian Standards and PV guidelines are in the process of being amended to have the requirement removed, but until then they are compulsory.
    Advice from me on this forum is general and for guidance based on information given by the member posing the question. Not to be used in place of professional advice from people appropriately qualified in the relevant field. All structural work must be approved and constructed to the BCA or other relevant standards by suitably licensed persons. The person doing the work and reading my advice accepts responsibility for ensuring the work done accords with the applicable law.

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