This has been discussed before but I'm still not clear and would appreciate input.
I'm installing a home EV charger (Andersen A2) and need to decide on the right RCD/RCBO to terminate the connection at the CU.
- The system will run at 32A, the charger is connected to the CU via ~20m of 6sqmm SWA cable
- The charger includes a type AC RCD (BG CUR4030 https://www.bgelectrical.uk/public/downloads/data-sheets/devices/circuit_protection_RCDs.pdf)
- The car is a BMW i3 - though I cannot find specs regarding max residual current for it and the charge point should be future proof for other cars as well
- The house has a standard PME connection
My understanding is that I need a type B RCD at the CU to protect against potential DC residual currents. Correct?
- Most chargers seem to come with a type A RCD, not AC - will an upstream type B also protect against pulsated residual DC current?
- What about 'type EV' RCDs (e.g., RCCBs-Type 'A EV' - http://www.doepke.co.uk/rcd/rcd-EV.html) - seem to be similar to type B?
- Do type B RCDs come as RCBO versions - most 'type B' RCBOs seem to refer to the MCB function...?
Thanks!
I'm installing a home EV charger (Andersen A2) and need to decide on the right RCD/RCBO to terminate the connection at the CU.
- The system will run at 32A, the charger is connected to the CU via ~20m of 6sqmm SWA cable
- The charger includes a type AC RCD (BG CUR4030 https://www.bgelectrical.uk/public/downloads/data-sheets/devices/circuit_protection_RCDs.pdf)
- The car is a BMW i3 - though I cannot find specs regarding max residual current for it and the charge point should be future proof for other cars as well
- The house has a standard PME connection
My understanding is that I need a type B RCD at the CU to protect against potential DC residual currents. Correct?
- Most chargers seem to come with a type A RCD, not AC - will an upstream type B also protect against pulsated residual DC current?
- What about 'type EV' RCDs (e.g., RCCBs-Type 'A EV' - http://www.doepke.co.uk/rcd/rcd-EV.html) - seem to be similar to type B?
- Do type B RCDs come as RCBO versions - most 'type B' RCBOs seem to refer to the MCB function...?
Thanks!