Replace existing RCD with RCBO when installing Easy solar 11 250/100 GX

DIY
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1

Good evening , I am going to replace my existing working Epever Hybrid with a Easy Solar including Pytes 15 kw battery.

I have a old but working 30ma RCD on the incoming supply which will feed into a designated housing for 2 x40 amp MCB`s

[ these are double pole, Bcurve ] for the inverter in and out . after which is my consumer unit with MCB`s

I am thinking ,firstly do I need RCD with the easy solar if so would it be better to swap the 40 amp MCB`s for RCBO type B

2

Firstly, due to the sequencing of the internal neutral grounding relay of the Multiplus, you can’t use an RCB on the input side - they mostly always trip.

Best to fit the multi on the input side, then connect the existing load circuit on the output side.

3

Thanks Mike ,

Am I right in thinking the easy solar 5000 GX 250/100 already has an internal RCD ,this seems to be what the sales blurb says .

So no RCD needed as all incoming goes through the multi {I will confirm this with the sparky but im trying to get everything I need on site}

and leave the consumer unit as MCB`s .

4

@alanb From the Multiplus-II manual “An earth leakage circuit breaker and a fuse or circuit breaker rated to support the expected load must be included in series with the output, and the cable cross-section must be sized accordingly.”

5

yes agree RCD or RCBO needed on output ,it was more the input i was thinking,I have a working EPEVER inverter which i am swapping for victron,

I have read that an earth leakage detector on the input to inverter can keep tripping.I already have two inline RCD which are not tripping with epever.

I am going to start another thread showing a diagram of my proposed set-up .which I am happy to accept critisism . thankyou for you reply

6

Thanks Mike ,that was what i figured , I am going to start a new thread with a diagram of my proposal .criticism welcome