Supply cable and switch gear

[Telgee]

hi there all ...a friend is having works done to there lord of the Manor House and are converting a barn to a 2 bed house also having a car port with 3 electric fast charge car chargers
Car port is 70 metres away
Barn is 100 metres away
Supply is being moved in the house to new location out of the cellar and they are already being charged £9000 for that which is 3 phase so they wanna save some cash by running there own supply cables for carport and barn conversion what cable should they run ?? Also what other things need to be purchased and put in place until they hire a sparky to connect ??
Any advice gratefully accepted

 

[Pete999]

Friend payments, I come cheap if you need any more

Oi I was there first.

 

[Spoon]

Friend payments, I come cheap if you need any more

Cool.. 2 friends.... 2 more than I have ever had...

 

[Spoon]

Oi I was there first.

You are my favourite, mate..

 

[Pete999]

Friend payments, I come cheap if you need any more

Oi I was there first.

Cool.. 2 friends.... 2 more than I have ever had...

 

[Pete999]

You are my favourite, mate..

People will start talking Mate, best keep it in the closet for now.

 

[Jim_e_Jib]

I think the combined 66kW load of the three chargers might equate to a current a touch more than 30A at 240V.

I'd follow the advice given and employ the services of an electrician.

 

[Jim_e_Jib]

Deleted

 

[Telgee]

You are more than likely correct in your assumption Matt, annoying isn't it, if he want's help fess up and come clean. No harm in doing just that.

Fella if I could afford the cable going in let alone the barn in his grounds I would fess up immediately don’t you worry about that

 

[johnduffell]

Don't take things so personally. This is a site for debate and that's what's going on. You are not coming across as rude and people disagreeing with you are not making personal attacks

Thanks for everyone's comments, I'll take on board and carry on learning! Hopefully i can learn faster than i forget...

 

[davesparks]

it’s dropping in a couple of cables while trenches are open... ...as not being a qualified electrician I didn’t realise there was so many variables in cables that could be run ?? And as most things in life it all equates back to mathematics in some shape or form ...
so for the car port the load for 3 charges is 22kw each or 66kw total So reading what I have does that equate to roughly each charger 10 amp for 240v supply and less for 400v supply ?? Swa?? What size ?? How many cables that can be buried in the dirt carry that over a 70m distance with the voltage drop included ?? Will the earth be suffice if 3 core swa and one of the cores be used or does it need to be run seperately or use earth rod ??

22kW car charger? Are you sure you don’t mean 2.2kW?

Is the submain to be three phase or single?
Can any diversity be applied?
What other loads are there planned to be connected or foreseeable in the future?
What is the earthing system and Ze?

 

[Deleted member 26818]

Isn't it strange how many people ask for advice on forums on behalf of a 'friend'. There must be loads of people wanting work done who don't have the Internet themselves.....

They’re getting internet once the electric supply has been run in.

 

[Jim_e_Jib]

22kW car charger? Are you sure you don’t mean 2.2kW?

Is the submain to be three phase or single?
Can any diversity be applied?
What other loads are there planned to be connected or foreseeable in the future?
What is the earthing system and Ze?

I think the OP might really mean three 22kW chargers. It's going to be quite some supply cable if so.

Tesla home charger - evChargeking - https://www.evchargeking.com/en/tesla-22kw-charging-station

 

[EbolaSideRoom]

Late to the party as ever...
To the OP
The Cart Goes After the Horse.
Engage a suitably qualified electrical contractor, hey, engage several. Give accurate, identical specifications to each and ask them to price accordingly.
Then Robert might end up as your Mothers brother.

 

[Spoon]

Late to the party as ever...

You must be female...

 

[Spoon]

lmao... thanks for the 'optimistic' in post #20 @Richard Burns, that made me laugh...