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G99 Application

Heera

Hi all,

Bit of a hot topic this, but who is responsible for making a G99 application? Does it lay with the PD, as they have now submitted their Stage 4 designs, and specified the load and generator sizing. if so why?

Or does it lay with the installer, if so why? The PD is pushing it back onto the contractor.

Thanks

Heera

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  • 0

    As far as the DNO are concerned the information is submitted on behalf of the customer. 

    (A person who is the owner or occupier of an installation or premises that are connected to the distribution network according to national grid.)

    ( https://connections.nationalgrid.co.uk/downloads/24747 )

    Now usually the customer does not do it all themselves but engages someone to sort it out, and that may be a design authority such as a consultancy or the installer, or indeed some third party paperwork specialist. So it boils down to what has been contractually agreed, and if nothing, its a question for the customer, are they doing it, or do they want to pay someone else some more to do it for them.

    More generally what level of DNO involvement and who is liaising is normally something to be all agreed before work actually starts !!

    -Because at least in principle, something may otherwise be built that is then refused a connection - not very  likely for a small installations built from  of standard type approved  parts (Solar panels on a few bungalows sort of thing), but larger jobs of many tens of kVA and upwards that may need network reconfiguration are another matter entirely.

    Mike.

  • 0 in reply to mapj1

    Yeah I get what you mean. Its a tough one really, as nothing was agreed before hand. Generator has been sized for 300kVA, but it will only back up essentials supplies of being around 66kVA. 

    Personally I believe the PD should have carried out the G99.

  • 0 in reply to Heera

    If you are (just) the installers do you even have access to all the design information you would need to submit it ?
    As if not the designer needs to provide that to the installer anyway, and if they are doing that they may as well send a copy to the DNO as any query that was not a trivial answer would get reflected back to them...

    I presume the problem, as always, is really one of un-budgeted extra costs and effort... 

    How far is it down this process chart ?

    Dark green is DNO action, light green is customer or representatives..

    Mike.

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  • 0 in reply to Heera

    If you are (just) the installers do you even have access to all the design information you would need to submit it ?
    As if not the designer needs to provide that to the installer anyway, and if they are doing that they may as well send a copy to the DNO as any query that was not a trivial answer would get reflected back to them...

    I presume the problem, as always, is really one of un-budgeted extra costs and effort... 

    How far is it down this process chart ?

    Dark green is DNO action, light green is customer or representatives..

    Mike.

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