Wyler nx ......

i=p/u · Jul 31, 2013

Has any of yous seen old Wylex board that takes cartridge fuses and persons have added mcbs which don't actually fit in the correct terminal , but the bus bar spades around the actual screw that you normally tighting

i=p/u · Jul 31, 2013

Actually have pic I took.. As some say always helps put across what I asking /saying...

Richard Burns · Jul 31, 2013

I would have said that looks normal for many wylex CU's.
That type of bus bar is just an alternative method of connecting the breakers, still valid, however if the breakers are not the right height to clip over the DIN rail then they will not be secure and this could put strain on the connections.

i=p/u · Jul 31, 2013

It does sit on the din rail, but instead of going in normal connection point, it's going around the screw at the front , maybe they 2 position breakers and did tighten up, but never seen it before...

i=p/u · Jul 31, 2013

It's a a 16th board , only 1 side rcd protected ... Does anyone know if there is a different breaker or model number that should be used...

Richard Burns · Jul 31, 2013

MK also made consumer units like this.

There are the standard wylex NHX breakers in place already (B40 on the end) so if that one fits properly then you are OK using the standard wylex stuff.

Some other makes of breaker do not have an open section at the front to allow it to fit over the bus bar, they will only fit thin fork type bus bars.

Geordie Spark · Jul 31, 2013

I fitted a board like that in my own house.

One Main Switch with 12 RCBOs and 2 MCBs.

I think I prefer this type of bus bar - you know it's properly in place and tightened.