Extending supply from one CU to the next with internal connectors

Just been browsing parts and seen these

https://mastertrade.co.uk/fusebox-it1002u-100a-2p-connector.html

Wondering if in some cases they are a more elegant way of effectively splitting the supply to two consumer units.

Run supply into first unit and then use one of these to connect to the second unit. Struggling to get my head around how I would connect inside the consumer unit and maintain a supply capable of carrying ideally 100 amps.

Presumably the bus bar is ok if the connector is next to the incoming device, second board would use another one of these instead of a switch.

Then presumably use a short internal neutral cable from hager or similar from the neutral bar.

Wondering why I haven't seen others doing something like this. I am mainly looking at EV installs.

I assume these are aimed at when CU's are stacked and enabling effectively internal interconnection, where as for me I would probably have the boards next to each other, maybe with a gap. 

Parents Reply
  • We used a lot of these in a recent job. Hager do a combined 2 pole AFDD/MCB, fed by busbars from a RCD. Of course, 2 busbars run along the bottom of the circuit protection, which is fine for the double module AFDD/CB combination, but when a single pole device is used, for example for lighting where no AFDD is required, then there isnt a Neutral connecting bar, the busbar under the circuit protection has to be used, hence one of the KRN190 connectors is used , connected to the neutraal busbar, alongside the circuit breaker on the line busbar.

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