Need to replace mk 100ma rcd (6160) with 30ma one

[Eddiesparks]

Sorry, in a rush...,Will any mk 30ma one do? Thanks loads guys

 

[not clever]

Sorry, in a rush...,Will any mk 30ma one do? Thanks loads guys

Not if the one you are removing is 100mA for a reason.

 

[Eddiesparks]

16th ed. board put in by kitchen fitters. Nuff said.

 

[telectrix]

is it TT?

 

[Eddiesparks]

Tn-s. i am in london i've never worked on a tt/farmer system!!

 

[trev]

There must be hundreds of thousands of TTs up and down the country, we live close to the centre of town and we're on a TT. You can't say they're a farmer system

Girrorf o moi larnd!!!!!

 

[Eddiesparks]

Sorry boys. Also let's not forget the caravan dwellers cough cough pikeys

 

[chrisg1979]

One of my mates works in London, says he sees loads o TT's!

 

[Eddiesparks]

Audi TTs. Driven by drug dealers

 

[Eddiesparks]

Can anyone answer orig. post?

 

[Richard Burns]

The one you describe is an MK Sentry RCD and it would be best to replace it with an MK Sentry 30mA 60/80/100A DP RCD such as this this or this.

 

[telectrix]

agree ^^^^^. if a DB catches fire or fails in any way, MK would say it was your fault for fitting non -MK parts.

 

[Eddiesparks]

I would def put in mk. Just needed to know if sentry stuff was ok. Thanks all

 

[Engineer54]

Be ready for lot's of possible nuisance tripping if you're intending on this 30mA RCD looking after the whole CU!!

 

[not clever]

Be ready for lot's of possible nuisance tripping if you're intending on this 30mA RCD looking after the whole CU!!

Hence my post in reply..........................but was ignored so thought sod it crack on Marion

 

[Engineer54]

Afraid people just don't THINK, before they start altering things that were based on much earlier regulations. To do this job correctly, the CU needs to be changed out for a 17th dual RCD CU, or remove the existing 100mA RCD and protect the circuits via RCBO's. But you can bet your bottom dollar it won't be!! lol!!

 

[tony mc]

You say 16th edition CU. Can you clarify that the CU has a main switch and a 100mA RCD protecting the FRC etc and you are replacing that unit to a 30 mA unit.

 

[Eddiesparks]

The way i look at it i need MY kitchen radial to comply with regs so an existing 16th ed. board with 100a main switch and non sockets not rcd protected then all sockets protected. Existing broken ring was on rcd side. Rewired a 4mm radial then when i tested i got through all other tests and did rcd test which was when i noticed the 100ma rcd. Yes to do the job completely a board change would be ideal but you couldnt argue my method isnt by the book! ?!?!

Could also be that there could be faults on rcd side that are not being 'noticed' by 100ma rcd so it could be opening a bit of a can of worms! Fairly unlikely, not a hugely old install

 

[tony mc]

Its Sunday and I don't understand your reply. Do you have a 100 Amp main switch with a 100 mA RCD in place of a 30 mA unit on the split board?

 

[Engineer54]

A 16th ed CU did NOT employ a 100Ma RCD on split configurations, it was always a 30mA RCD. Only as i remember, on the earlier 16th's or was it 15th, that used an upfront 100mA RCD in CU's that covered all circuits....