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?

 

[Deleted member 9648]

If the HHD is testing with a fan connected in circuit there's a good chance a capacitor is skewing the meter.

 

[uksparks]

I have fitted RCD spurs mid point on light circuits for people when doing work and never had a problem to date, I would think there's something more simple going wrong here such as leafs wrong way over on MFT....

 

[Pete999]

You are not a lot of help are you.

Can't see how that question is not being helpful, it was, as someone has pointed out a perfectly relevant question.

 

[R G]

If the HHD is testing with a fan connected in circuit there's a good chance a capacitor is skewing the meter.

which is why as I said earlier , disconnect all loads first , I think also it's a case of test leads in the wrong terminals

 

[HappyHippyDad]

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....

Back to your old ways then Glenn.. for a brief moment I thought it looked like you were becoming an adult.

Bit exhausting to keep saying it, so I'll give up after this... but have another read of the thread.

 

[GLENNSPARK]

Back to your old ways then Glenn.. for a brief moment I thought it looked like you were becoming an adult.

Bit exhausting to keep saying it, so I'll give up after this... but have another read of the thread.

well...it would be nice to see some new ways eminating from your direction...

but it`l be back to trying to work out how to wire a bell no doubt...

 

[GLENNSPARK]

have you not considered that you may have disturbed the CPC someware....probably whilst trying to put fronts on..

and it would be refreshing if you actually took on board some of the advice given as well (from me & others)...this would include the bottom sentance at #73...

rather that being....somewhat selective with your highlighting.....

just a thought mind you....take it or leave it...

 

[GLENNSPARK]

mind you i still hold with the theory that tecnique may be the issue here...

or lack of it....

 

[telectrix]

have you considered the fact that the RCD might be faulty?

 

[iamelectric]

haha you getting a bit annoyed their GLENNSPARK mate , dont worry am sure a few of your trolls sorry buddies will be along to back you up anytime now

 

[GLENNSPARK]

have you considered the fact that the RCD might be faulty?

yeah i have mate....

probably why i mentioned it at #24

 

[GLENNSPARK]

haha you getting a bit annoyed their GLENNSPARK mate , dont worry am sure a few of your trolls sorry buddies will be along to back you up anytime now

?????

not at all....just pointing out a few
glaring facts.....

 

[Meggerman]

have you considered the fact that the RCD might be faulty?

Yes definatly, I reckon it is that, but it would seem that many would just rather assume that OP cannot test correctly.

 

[Meggerman]

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

Yeah, it would have been nice to see the race order myself thanks!! I'll let you off as you own a 11XX. I still got mine (98 Carb model), although it has been reduced to all weather use now

 

[GLENNSPARK]

Yes definatly, I reckon it is that, but it would seem that many would just rather assume that OP cannot test correctly.

well come on...

what are we supposed to think when he comes in asking how to wire up a bloody bell

or how about the classic fail that was the dis-board change without any pre-testing...anyone remember that one?

oh and by the way before you decide to start...i`m not on my own in regard to this either....

i said before that the OP would be better shadowing an experienced electrician for at least a year before carrying out any more work on his own...

i still stick by this....