When to notify dno of car charger in domestic

Question

Very quiet here lately . 
 Anyway, under what circumstances should you notify -or not as the case maybe -the dno of a domestic charger . 
 I&rsquo;ve always gone on the uk power network low carbon portal prior to works commencing and entered the answers and details for any domestic charger and a waited the response usually in less than 24hrs , but I seem to be competing with others who don&rsquo;t . 
 
 any ideas ? Ty .

gkenyon · Answer

See Section 11 of the IET Code of Practice for EV Charging Equipment Installation (4th Ed). Prior to commencing work if any of the following apply: 
 
 Maximum demand will exceed 13.8 kVA (60 A). (Some installers are setting load curtailment so that the max demand will not exceed 60 A) 
 Vehicle-to-grid charging systems, when the total generation operating in parallel with the exceeds 16 A per phase (3.68 kVA single-phase) - this would have to be a G99 route. 
 
 In addition, if you're working in an area that had looped supplies, for safety (i.e. prevent fires), it's recommended to defer installation until the DNO have sorted things you (again, risk is fires). A looped supply is one where the DNO service cable supplies one house in terrace, or semi-detached, then a loop is taken from the service head to to the next house (or even then to another, and possibly another). The problem with looped supplies is overloading the DNO cable ... and if you're installing at the last property, you will only see one service cable coming in. 
 Otherwise, notify within 28 days of completing the work. 
 
 5th Edition of the CoP is due out shortly ( expected 18 September 2023, available to pre-order ) . There will be additional guidance on looped supplies for dwellings in Section 6, as well as further guidance on vehicle-to-grid installations, and EV charging in prosumer's electrical installations with island mode capability.

When to notify dno of car charger in domestic

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