Ring Main Tripping MCB

[irishsailor]

A friend has just called saying his power circuit keeps tripping the MCB, he said all appaliances are plugged out?

Any suggestions lads

Irish

 

[kduck]

You need to ask some BASIC questions first, Has any one been playing with the wiring, is it the upstairs or downstairs ring, if downstairs is it wooden floors.

Number of outcomes downstairs with wooden floors could be water under the house seen this a few times, Rodent damage or even a loose wire.To be honest you would need to test it, Start with basic testing continuity then insulation test. Minimum insulation is 0.5 at 500v test.

 

[flukey]

we're working to the 17th now kduck, minimum IR 1 megohm, latent defect under 2 megohm

 

[kduck]

yeah your right sorry 1.0 complies with the 17th

 

[flukey]

no need to apologise mate

 

[Guest123]

Hey chaps.

I'm a little confused, an MCB provides overcurrent protection, where as an RCD provides earth fault protection.

The only time an MCB would operate is under overload conditions. (See below)

Do you mean RCD??

Cheers.

PS, sorry short circuit also, just become a Dad for second time no sleep and too much work....bad combo.

 

[Spudnik]

MCB does overload and short circuit protection.

Come on. Get it right

 

[Mark2009]

Hi
Has anyone put a nail through the cable?

Thanks

Mark

 

[Had8Lives]

Check there's no spurs off the ring. Naughtily connected immersion heater?

 

[kung]

Also worth checking i know it sounds silly but he might be confused and think an rcbo is an mcb !
Regards
Kung.

 

[weyboy]

Test the circuit......!!!