Cannot get RCD test to work?

[HappyHippyDad]

Evening chaps..

I have just fitted some downlights in a bathroom and needed to give them RCD protection as there was none. I fitted the following:



The test button works fine and the unit trips when a fault occurs (touching neutral to earth) but I cannot get the MFT to test it for trip times which I need for the MWC. Its a fairy decent MFT and I've never had any trouble with it testing RCD's before but I have never tested this sort of RCD before, it has always been in the CU. I make contact with the live/neutral/earth of something which the RCD is feeding, I get the little 'tick' on the MFT and then it just wont test.

Am I missing something simple here? Is this unit tested in the same way as you would an RCD in a CU?

 

[GLENNSPARK]

Was IR testing carried out through this RCD?

 

[trev]

Well you haven't done that to me so don't worry about it MM, it was nothing but a discussion from where I was sitting.
Enjoy the Moto GP, is Valentino Rossi still riding? Obviously you can see that I know three tenths of bugger all about it but my brother rates him very highly.

 

[HappyHippyDad]

Was IR testing carried out through this RCD?

Glenn!! You're going to have to go back through the thread!! I did all tests and gave all results... Zs, IR, Continuity of CPC, pi R sqared, E=MCsquared and the meaning of life are all in this thread somewhere... Just look!!

 

[R G]

Saw it yesterday Marques wins with Rossi right behind him in second ,good race , got out on my Blackbird afterwards ,,

 

[HappyHippyDad]

I'm off to finish watching the film now...
cheers for all the input guys.

 

[NickD]

Glenn!! You're going to have to go back through the thread!! I did all tests and gave all results... Zs, IR, Continuity of CPC, pi R sqared, E=MCsquared and the meaning of life are all in this thread somewhere... Just look!!

Do I remember rightly that RCD testers abort the test if the voltages induced by the test (relative to the CPC) are too high?

 

[jackhammerJIM]

I think what glenn is saying is have you put 500volts through the RCD

 

[uksparks]

I know it sounds rediculous but make sure you have a good connection where you are testing, I have found that if testing an rcd, say at a light fitting, it can make it not work properly if you arenot holding the probes on tight enough. Just a though....

Oh and make sure you have your leads plugged in the right holes on your meter, I did that once, can't remember which was round they were but it wouldn't trip the rcd as much as I tried.

 

[Meggerman]

Well you haven't done that to me so don't worry about it MM, it was nothing but a discussion from where I was sitting.
Enjoy the Moto GP, is Valentino Rossi still riding? Obviously you can see that I know three tenths of bugger all about it but my brother rates him very highly.

Marquez is the boy at the moment. Rossi still in there, even Edwards and Hayden still going.

 

[uksparks]

I'm off to finish watching the film now...
cheers for all the input guys.

What film are you watching?

Schindlers Fist?
Womb Raider?
Snow white does seven dwarfs?
School of cock?
Gangbangs of new York?

 

[GLENNSPARK]

Glenn!! You're going to have to go back through the thread!! I did all tests and gave all results... Zs, IR, Continuity of CPC, pi R sqared, E=MCsquared and the meaning of life are all in this thread somewhere... Just look!!

so in other words you shoved 500V through the RCD....

 

[NickD]

so in other words you shoved 500V through the RCD....

Thought RCDs were good for 500V apart from RCBOs on which you have to remember to disconnect any functional earth? If the RCD has been killed, wouldn't that result in a failed test rather than refusal to test?

 

[GLENNSPARK]

Thought RCDs were good for 500V apart from RCBOs on which you have to remember to disconnect any functional earth? If the RCD has been killed, wouldn't that result in a failed test rather than refusal to test?

may just not test at all....

personally i think theres either a lack of understanding about how to carry out the test competantly from the OP (hardly surprising)

or theres no continuity of CPC someware......

if theres any exposed pipework nearby the OP could prove the no continuity of CPC easily by connecting the earth croc to extranious whilst testing the RCD.....if it lets go then i would dare say its a CPC thing....

 

[mrloy99]

Try testing live (load side) to earth only(neutral and earth probes)
Did an rcd spur work out cheaper than fitting an rcbo at the board?and where did you site it?Above the ceiling?

 

[MDJ]

What film are you watching?

Schindlers Fist?
Womb Raider?
Snow white does seven dwarfs?
School of cock?
Gangbangs of new York?

Here Now go and calm down your getting all heated under the collar lol