EV charging stations

Hi all.
Does any body on here have exsperiance with type2 charging stations. I have been asked to look at installing a 32A shed supply and 2 type2 chargers each charger will at max pull 32A each . My question is there any diversity applied to 2 charging station as I'm looking at rather a large cable supplying them and the shed.
The local consumer unit is not any where near the property mains intake

I suppose the obvious question is do you know the size of the DNO fuse?

400A 3 phase at the main in come.

I don't believe you can apply diversity to car chargers as they can be full current for a long length of time. You would probably have to look at load curtailment, which many, but not all, chargers support.

Ok, beware chargers not being 3phase, and you can usually power limit the charge points total ampage. So that usually prioritises whoever plugs in first, and restricts power to second socket until the first one has finished charging.

Do all unit support the prioritising of chargers. Also does any body if to get grants for installation does to installer need to be registered with a ev approved body.

Pingpong said:

Do all unit support the prioritising of chargers. Also does any body if to get grants for installation does to installer need to be registered with a ev approved body.

Click to expand...

No grants anymore

You can't add any diversity to charge points as they aren't a cyclic load... they tend to be full chat for 6 or 7 hours,,, however certain charge points can load curtail to protect the service fuse.
If you have 3ph then you might be better off installing a 3ph charge point with all the protection built in via a local DB.
The home charge grant is no longer available for private home owners, however the workplace grant is still available for businesses and the grants are available for landlords and tenants, however you have to be OZEV approved to be able to claim the grant,,, and you usually have to be approved by the manufacturer for them to give a 3 year warranty

binky said:

No grants anymore

Click to expand...

No grants for homeowners, but don’t other sites still get some support?

Murdoch said:

No grants for homeowners, but don’t other sites still get some support?

Click to expand...

YES
The workplace grant is still available for businesses for their employees, and has been expanded to small businesses (inc holiday accommodation) for public use - I think that landlords and tenants come under the home charge grant now - the grant is no longer available for owner occupied properties

Wouldn't it be better to install each EVSE (the OP did say 2 EVSE's) on different phases - so 32Amps on two phases. No issue there.
Of course it does mean having to pull 2 cables to the shed or one 3 phase cable I guess

If you have a 3ph supply there are dual point EV points (untethered) mind you.
This installed with the load protect as mentioned above could work nicely.
Failing that would generally recommend Zappi’s as they have all the curtailment to protect main fuse etc.

NugentS said:

Wouldn't it be better to install each EVSE (the OP did say 2 EVSE's) on different phases - so 32Amps on two phases. No issue there.
Of course it does mean having to pull 2 cables to the shed or one 3 phase cable I guess

Click to expand...

Not really…. A 3 phase supply needs to have 3 phase O-PEN protection, so a 3 phase charge point could end up being cheaper than a single phase one and separate 3 phase MATT-e (or similar)

binky said:

No grants anymore

Click to expand...

Only for businesses