RCCB as main switch?

[Guest125]

yup,I was thinking the same, I recommend all old aged pensioners in his area bolts their doors tight.

Are you implying something deary?

 

[Guest125]

As I posted before, It may be a 30ma RCD upfront already, he has not stated rating.

I know but we were specifically talking about if the RCCB is time delayed. In this case it would not give his new circuit the required protection so a 30mA non time delayed RCBO will be required.

 

[TJ Anderson]

I know but we were specifically talking about if the RCCB is time delayed. In this case it would not give his new circuit the required protection so a 30mA non time delayed RCBO will be required.

You can't get 30ma time delayed RCD or RCBO. He needs to say what he has got.

 

[ipf]

Come on. It would be the best thing to do.

Why change? What earthing system?

 

[Simlec]

Yes Noob you should not have 2 of the same mA RCDs in line, unless your RCCB is 100mA & time delayed.
As you have not given a mA for the RCCB which would normally be on the front, are you mistaking it for a ELCB?
You may need to take a pic of it so members can check.

 

[ipf]

Are you implying something deary?

Says it all....if in doubt, do 'em!!

 

[Guest125]

You can't get 30ma time delayed RCD or RCBO. He needs to say what he has got.

Yes you can.

 

[TJ Anderson]

Yes you can.

Where? Think you will be looking a while

 

[JD6400]

Yes you will need to RCBO it. If the main is time delayed you will achieve the required discrimination between the RCBO & the RCCB.

From the description , and without looking at it !
I would say that the installation is likely to be TT , hence the up front rcd ( probably an 100mA S type ) so why or how could it possibly be failing any regs if the new circuit was to be just installed on a new rcbo ( even then if needed ? ) , instead of a whole new board !?

 

[telectrix]

Yes you can.

find me one!

 

[Guest77]

It may well be one of these chuckle, and the OP is confused.

 

[Guest125]

From the description , and without looking at it !
I would say that the installation is likely to be TT , hence the up front rcd ( probably an 100mA S type ) so why or how could it possibly be failing any regs if the new circuit was to be just installed on a new rcbo ( even then if needed ? ) , instead of a whole new board !?

My point was the opposite. To not install a MCB but an RCBO.

 

[davesparks]

You can't get 30ma time delayed RCD or RCBO. He needs to say what he has got.

Can't you?

 

[Guest125]

find me one!

And when I do?

 

[Simlec]

Yes you can.

Where would you use one?
I know where you find them, next to the rocking horse sh*t lol

 

[telectrix]

And when I do?

shove it up your **** :49:

 

[Guest125]

My point was if he installs a new circuit to a board which has a RCD main switch (and doesn't need it) then in affect he will be making the existing circuits worse by adding to the problem of one RCD protecting the whole installation. I know it is not clear cut and is only my interpretation so I think a board change would ensure all the new work is compliant.

 

[JD6400]

find me one!

I had this about 2 years ago , someone on here had found one on fleabay just to prove a point . :dunce2:
Despite it being from some knock off 3rd world importer , I still had to go to the trouble of explaining why it was as much use as ---- on a bull !

 

[davesparks]

Where? Think you will be looking a while

Well for a start a simple adjustable RCD will give you tripping currents from 10mA up to 1A (or more) and time delays of 0.1S up to 10S (or more)

 

[TJ Anderson]

Can't you?

Not that I am aware, have you?