RCBOs vs RCDs with MCBs

[rodgearing]

In a domestic set up ie average (if there is one) house is there any reason you wouldn't use a RCBO but a MCB and a RCD?
I can't think one
Fred

 

[davesparks]

Can you specify the type of RCBO with regards to the number of poles it is switching as that will affect the answer?

 

[Risteard]

Cost. Also the RCCB will switch the neutral pole whereas the RCBO may well be single pole and leave a neutral/earth fault in situ. Not good if there is an upstream RCD.

 

[HappyHippyDad]

In a domestic set up ie average (if there is one) house is there any reason you wouldn't use a RCBO but a MCB and a RCD?
I can't think one
Fred

....Cost!

 

[davesparks]

Cost. Also the RCCB will switch the neutral pole whereas the RCBO may well be single pole and leave a neutral/earth fault in situ. Not good if there is an upstream RCD.

Did you mean 'not good if there is not an upstream RCD ' ?

If there is an upstream RCD then that will clear the fault and the SP RCBO will not be so much of a problem.

 

[Octopus]

I'm not sure I fully understand the question!

 

[Risteard]

Did you mean 'not good if there is not an upstream RCD ' ?

If there is an upstream RCD then that will clear the fault and the SP RCBO will not be so much of a problem.

But the fault will cause potentially a total loss of supply.

 

[driverman]

Think I know what OP means....I think RCBO's is the way forward nower days as the cost of RCBO's is now far cheaper than it used to be, making more viable for the general public to afford. You can get DP RCBO's which under fault conditions will open both poles.

 

[davesparks]

But the fault will cause potentially a total loss of supply.

Better than it causing a fire of there wasn't the upfront protection

 

[Guest77]

In a domestic set up ie average (if there is one) house is there any reason you wouldn't use a RCBO but a MCB and a RCD?
I can't think one
Fred

RCBOs single and not double pole (majority)
RCBOs expensive compaired to a split dual RCD board fully loaded
RCBOs take too much room up in average domestic boards, not curves though
RCBOs have horrible white fly leads which look like a ball of wall in the boards and make the boards harder to look neat
RCBOs have horrible long neutral leads which look like a ball of wall in the boards and make the boards harder to look neat.
RCBOs are better for individual circuits rather than an RCD covering 5 breakers in a split due to nusience tripping

How many more examples would you like?

 

[Octopus]

RCBOs single and not double pole (majority)
RCBOs expensive compaired to a split dual RCD board fully loaded
RCBOs take too much room up in average domestic boards, not curves though
RCBOs have horrible white fly leads which look like a ball of wall in the boards and make the boards harder to look neat
RCBOs have horrible long neutral leads which look like a ball of wall in the boards and make the boards harder to look neat.
RCBOs are better for individual circuits rather than an RCD covering 5 breakers in a split due to nusience tripping

How many more examples would you like?

RCBO's a far better way to go with an older installation and/or a poorly extended property!

 

[driverman]

RCBOs single and not double pole (majority)
RCBOs expensive compaired to a split dual RCD board fully loaded
RCBOs take too much room up in average domestic boards, not curves though
RCBOs have horrible white fly leads which look like a ball of wall in the boards and make the boards harder to look neat
RCBOs have horrible long neutral leads which look like a ball of wall in the boards and make the boards harder to look neat.
RCBOs are better for individual circuits rather than an RCD covering 5 breakers in a split due to nusience tripping

How many more examples would you like?

Are you a fan of RCBO's? lol

 

[davesparks]

Use the right RCBOs and you don't have flying leads and aren't any bigger than MCBs

 

[Guest77]

Are you a fan of RCBO's? lol

A curve board with an s type RCD up front and individual rcbos would be a good choice on a TT system, that said it would cost 150 notes rather than 50 a split would cost

 

[driverman]

A curve board with an s type RCD up front and individual rcbos would be a good choice on a TT system, that said it would cost 150 notes rather than 50 a split would cost

I've not heard the term "curve board" before.