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Thread: The Electrical Certificate of Compliance explained

  1. #71
    Diamond Member AndyD's Avatar
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    The UK domestic electrical industry falls under Part P legislation, commercial/industrial is different so in a nutshell you'd need to at least partly requalify then join a scheme in order to certify work unless you do so at a higher cost through building control. Have a look on the ELECSA / NAPIT / STROMA / NICEIC websites for more in depth info. http://www.elecsa.co.uk/Contractors/Part-P.aspx
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  2. #72
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    Does the issuance of a CoC require permanent connection to the national grid. Are the tests that require power valid if only a generator is used to carry out testing and commissioning of an electrical installation.

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    Junior Member W-TDMI's Avatar
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    Quote Originally Posted by Wandile.r.h@gmail.com View Post
    Does the issuance of a CoC require permanent connection to the national grid. Are the tests that require power valid if only a generator is used to carry out testing and commissioning of an electrical installation.
    712 GENS001.pdf
    7.12 States the options accepted for Alternative supplies. Point `a` addresses your concern. Will be tested as per requirements and certified.

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    Hi Everyone,
    I hope some of you smart people can help me please?
    We are buying a house where there is a solar installation, but it also uses power from the municipality at the same time. It does not manually switch over as one will do with a generator but rather just takes form the grid automatically when the batteries fall below a certain level. Now we have noticed on the COC supplied that the question "Is alternative power supply installed" is marked as NO. Can you tell me if this is correct?
    Also, there used to be an electrical stove and the switch is still there but they now have a full gas stove. and its not marked as having a fixed appliance circuit for a stove. is this just because there is currently not stove or could it mean that whole circuit has been removed? We would like to replace the stove with one that has an electrical oven, and thus would need the connection for it.
    Any help or guidance will be much appreciated.Electrical CoC 2017a.pdf

  5. #75
    Gold Member Sparks's Avatar
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    Welcome Chrisda. Your concerns are not unfounded. Unfortunately that is not all which is wrong with the COC. I suggest you keep an eye out on this page or find an electrician you know or can trust. I have spotted a number of irregularities on the COC. If the installation is as indicated on the COC I would not issue it before doing some work to make it compliant. The solar supply is a specialised part of the installation and must also be certified by a solar installer. Reference to that COC must also be made on this one, if it were correct that is. I am afraid I am too far away to be of more assistance than to confirm your suspicions, however, there are reputable sparkies who are members here who are closer to you.

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    Chrisda (12-Oct-17)

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    Junior Member W-TDMI's Avatar
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    Quote Originally Posted by Chrisda View Post
    Hi Everyone,
    I hope some of you smart people can help me please?
    We are buying a house where there is a solar installation, but it also uses power from the municipality at the same time. It does not manually switch over as one will do with a generator but rather just takes form the grid automatically when the batteries fall below a certain level. Now we have noticed on the COC supplied that the question "Is alternative power supply installed" is marked as NO. Can you tell me if this is correct?
    Also, there used to be an electrical stove and the switch is still there but they now have a full gas stove. and its not marked as having a fixed appliance circuit for a stove. is this just because there is currently not stove or could it mean that whole circuit has been removed? We would like to replace the stove with one that has an electrical oven, and thus would need the connection for it.
    Any help or guidance will be much appreciated.Electrical CoC 2017a.pdf
    Hi Chrisda.
    For now i will not be to worried about the stove and rather have a Registered person check the PSCC values. Hope this guys just made a typo error on that.
    You are 100% correct that if there is alternative power installed it has to be checked by the registered and noticed on the COC in 3 sections individually.
    For the stove. If there is a point provided for a stove it has to be mentioned.
    Hope you get this soon. Specially the PSCC.

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    Chrisda (12-Oct-17)

  9. #77
    Gold Member Sparks's Avatar
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    What about the 30 socket outlets with no ELCB protection?
    With only 2 light circuits and a pump circuit being fed from the main DB, where are the sub-DBs' being fed from?
    An earthing terminal for other services N/A?
    Incorrect declaration of specialised installation?
    Phase rotation omitted?
    I also suspect the main switch does not break the neutral supply?
    Switching devices tested with a megger?
    No attached Solar COC or reference to it?

    The electrician who connects the stove will check to see whether the cable has been disconnected in the DB and left there for future use.

  10. Thanks given for this post:

    Chrisda (12-Oct-17)

  11. #78
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    Thank you for your replies Sparks & W-TDMI.
    We have spoken to someone else as well and have contacted the transferring attorneys with our concerns. Waiting to hear from them.

    Sparks, the property has 3 phase power from the municipality, and some parts run off the municipal power only. Not sure how that works in terms of feeding the DB board/s...?
    As far as I understood the house itself is the only part which mainly run off solar with municipal power as backup.

  12. #79
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    Please can I bother you guys again? I need input on the electricians answers to the lawyers query....

    The lawyer has sent the following (which was her deduction from your replies) to the electrician:
    We refer to the above matter and confirm that you have issued an Electrical Compliance certificate on the above mentioned property on 11 September 2017.

    The following irregularities has come to our attention regarding the COC and we hereby request your reply thereto:

    • The solar supply is a specialized part of the installation and must also be certified by a solar installer. Reference to that COC must also be made on this one. If there is alternative power installed it has to be checked by the registered and noticed on the COC in 3 sections individually.
    • What about the 30 socket outlets with no ELCB protection?
    • With only 2 light circuits and a pump circuit being fed from the main DB, where are the sub-DBs' being fed from?
    • An earthing terminal for other services N/A?
    • Incorrect declaration of specialized installation?
    • Phase rotation omitted?
    • Does the main switch break the neutral supply?
    • Switching devices tested with a megger?
    • No attached Solar COC or reference to it?

    Your urgent response would be appreciated.

    AND this is the reply from the electician

    With reference to the report for the above premises, please see below:-

    • Solar installation (panels and connections to panels), is not a specialized part and it was not covered by any compliance certificate before SANS 10142-1 2017, and a certificate was not required. The new regulations that came out in 2017 only apply for installations installed after 2017 (new regulation book SANS 10142-1 2017).

    With the old regulations only change over switch and indicator to the input and output load is applicable.

    • All socket outlets are under earth leakage protection. The main distribution board (first DB from meters is outside by the borehole pump and supplies DB 1 in main building). There is no section on the compliance certificate to mention supply to other distribution boards (but labelled on main distribution board).
    • There is no specialized electrical installation (false declaration).
    • Regarding phase rotation; I will have to see the certificate I issued, please forward to me.
    • Regarding earth terminal; regulations 6.11.5 states: a readily accessible earth terminal may be provided (not a requirement any longer).
    • Regarding breaking of the neutral conductor, on a 3 phase system the switch does not require the breaking of the neutral conductor. Regulation 6.9.2.2 states: in the case of a multiphase circuit the disconnecting device shall disconnect all the phase conductors but does not need to disconnect the neutral conductor.
    • Switching devices can be tested with a megger (installation resistant tester).

    Please note that major repairs were done to the premises, over R30 000, we did spend 4+ days rectifying for compliance, I do not mind meeting with the new owners on the premises to answer any queries and show them around the installation.

  13. #80
    Gold Member Sparks's Avatar
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    Good day Chrisda, I have attached your COC with annotations where I see suspect/missing information. As the responsible person for the installation it would be in your best interest to have an independent contractor go to the site and check everything.
    After 4+ days the installation has had major work done and is no longer just subject to to minimum safety requirements.

    All mention of solar supply is omitted from the COC, this is not acceptable.
    According to the COC as indicated sub DB 2 and 3 socket outlets are not on ELCB
    Are all 3 sub DBs' fed from the main DB or are 2 of them Sub Sub DBs'?
    What exactly is fed from the solar panels and how is it connected?
    Regarding the earth terminal, he must make up his mind whether he is using old or new regulations.
    Regarding breaking the neutral conductor, he must read 6.9.2.2 a bit further. It states further that: In the case of a single-phase circuit, the disconnecting deviceshall disconnect live and neutral. In the case of a multi-phase circuit, the disconnecting device shall disconnect all the phase conductors but neednot disconnect the neutral conductor in an installation connected to a supply system in which the neutral conductor is earthed direct (see theTN system in annex M).
    According to the COC the installation is TNCS
    Electrical CoC 2017.pdf

  14. Thanks given for this post:

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