Adapt this CU...........

[Octopus]

OK - this is a dual board, about 3 years old ......... 1 RCD per bank.

They are experiencing random tripping, and my trusty earth leakage clamp shows that both banks are running at around 21 mA leakage - so the smallest change plunges half the house into darkness etc.

Anyone know if I could easily source the parts to add 2 more RCD's (yes I realise some circuit consolidation would be required ....

Thanks

And no I didn't install this!

 

[SparkyChick]

Hager do have a range of accessories that you could potentially use.

Consumer Unit Accessories Insulated Consumer Units - http://www.hager.co.uk/product-catalogue/energy-distribution/consumer-units/insulated-consumer-units/consumer-unit-accessories/38466.htm

Couple of split load cable kits maybe, split the bus bars and a couple of new RCDs.

 

[SJD]

Can you perhaps put the "leakiest" circuit from each RCD onto a couple of RCBOs?

 

[Leesparkykent]

Can you perhaps put the "leakiest" circuit from each RCD onto a couple of RCBOs?

Still needs another couple of neutral bars for that though.

 

[SparkyChick]

Still needs another couple of neutral bars for that though.

They are available as spares/accessories... as soon as I posted I thought about them and yes, they are available as spares so he should be able to add a bar to each unit without too much hassle.

 

[SJD]

Still needs another couple of neutral bars for that though.

For just one RCBO, you could maybe use direct cables of a suitable size depending on the RCBO value?

 

[HappyHippyDad]

I've never used Hagar, but I think they're supposed to be pretty versatile. Could you not use two of these https://www.sparksdirect.co.uk/hager-terminal-bar-10-way#.WcApQ0DTVpU in the spare ways on the top left of each board for 2 more neutral bars?

 

[Octopus]

The client did ask what the best solution was - I said replace ALL the MCB's with RCBO's but with 26 circuits this wouldn't be cheap!

 

[Phil Thompson]

I was pricing Hager RCBO's earlier. Over a monkey plus vat for 26 of the yokes. Some price.

 

[Toneyz]

The client did ask what the best solution was - I said replace ALL the MCB's with RCBO's but with 26 circuits this wouldn't be cheap!

I think that will be the only option as there is not any space to fit a two modular RCD to make each board split RCD.

 

[Octopus]

I think that will be the only option as there is not any space to fit a two modular RCD to make each board split RCD.

I think there may be a few circuits which could be consolidated and make some space

Back on site next Saturday .... So will take some more photos

 

[Gavin John Hyde]

The cheapest place i have found recently for hager rcbos is
discount-electrical.co.uk also known as shop4electrical.
The price can vary widely between suppliers. Hager are good with 2 year warranty too in event of failures. Dodgy batc etc...just never buy direct from hager though. They charge the list price!

 

[mickfred]

Rather test that board than my one today . Looked perfect but the earths and neutral s where cut so tight that it was a pain to get back in . looked more like a art project than a leccy board

 

[JK-Electrical]

Perhaps the purchase of a few job lots of replacement RCBOs would bring the cost down to an acceptable level?

Link 1

Link 2

Link 3

 

[dmxtothemax]

QUOTE - [ both banks are running at around 21 mA leakage ]

Have you investigated why,
Seems a little on the high side.
Instead of masking the problem,
Get to the root cause of the issue ?