Installing a 3 phase rapid EV charger?

[HappyHippyDad]

A bit of an embarrassing question.

I have a regular customer who I enjoy working for. He has asked me to install an EV rapid charger for his avant loader (electric tractor type thing). I always turn down 3 phase jobs as I don't feel I understand it fully, but I'd like to do this job.

I believe this is the charger (400V/32A version) Rapid battery charger, e6 - https://www.avanttecno.com/uk/options/rapid-battery-charger-e6

I have added a picture of the 3 phase supply.

1. Are there any additional tests to do, compared with single phase? Phase rotation etc.

2. Is it simply a matter of connecting L1, L2, L3 from the Henly blocks (or perhaps the 3 phase merlin gerlin board) into whatever the instructions say is needed? (eg 30mA RCD)

3. I get a little confused by the role of the neutral in polyphase. Does the neutral have a role in 3 phase or is it simply there to support single phase appliances?

 

[westward10]

How about a 3 pole RCBO Westward?
Haven't found one yet though!

You won't get three or four pole rcbos for that board.

 

[Risteard]

How about a 3 pole RCBO Westward?
Haven't found one yet though!

A triple pole RCBO would be no use for an EVSE installation.

 

[Aaron b]

If there are three spare ways in the Merlin board then yes take the circuit from there but you will have to fit a separate rcd as you won't get a four pole rcbo for that board.

I have a job using these boards currently. Do they take the Schneider multi 9s? I assume they do but would rather be sure before buying ten mcbs.

 

[HappyHippyDad]

A triple pole RCBO would be no use for an EVSE installation.

Completely agree Risteard, but in this case it is just feeding a commando socket so would be ok. However, I've bought a 4 POLE RCD combined with a commando socket and will use a 3 pole MCB in the CU.

 

[Risteard]

Completely agree Risteard, but in this case it is just feeding a commando socket so would be ok. However, I've bought a 4 POLE RCD combined with a commando socket and will use a 3 pole MCB in the CU.

Ideal.

Generally an MCB feeding an RCCB is going to be the most realistic option here.