replying to John Rumm, Yam man wrote:
Thanks John for reply we had friend of friend who is sparx and he checked all
my work that I had disconnected earlier and confirmed no problems and
reconnected all up and confirmed you're earlier suggestions off faulty rcd
recommended replacement. But that is as far as he will go as friends favours.
£20 to fit it if I get the rcd on Tuesday am. Hopefully this will be the
problem solved. Thanks for all help suggestions and advise I will let you know
if this is solved.

--
for full context, visit https://www.homeownershub.com/uk-diy...e-1242228-.htm

replying to John Rumm, Yam man wrote:
How I wired junction box supply from 1 going to next light on circuit and 1
cable leading off to 3 amp fused switch. That's all look ok
https://www.homeownershub.com/img/bh

On 21/10/2017 23:14, Yam man wrote:
replying to John Rumm, Yam man wrote:
How I wired junction box supply from 1 going to next light on circuit and 1
cable leading off to 3 amp fused switch. That's all look ok
https://www.homeownershub.com/img/bh

Yup that looks ok.

(Perhaps a couple of cable clips to keep the wires in place since a JB
like that does not have any grips to stop the wires getting pulled out
if someone were to trip on them in the loft).


--
Cheers,

John.

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replying to John Rumm, Yam man wrote:
Clips now fitted again they were removed so sparky could see were all went and
what I'd done easier. Cheers again John will update when rcd changed if it
cures our faults.

--
for full context, visit https://www.homeownershub.com/uk-diy...e-1242228-.htm

On 21/10/2017 22:44, Yam man wrote:
replying to John Rumm, Yam man wrote:
Thanks John for reply we had friend of friend who is sparx and he
checked all
my work that I had disconnected earlier and confirmed no problems and
reconnected all up and confirmed you're earlier suggestions off faulty rcd
recommended replacement. But that is as far as he will go as friends
favours.
£20 to fit it if I get the rcd on Tuesday am. Hopefully this will be the
problem solved. Thanks for all help suggestions and advise I will let
you know
if this is solved.

I'm glad to hear that. I was getting nervous that you might hurt
yourself. Still, if John was helping you I wasn't going to get involved
- he knows far more than I do.

Andy

On Sunday, 22 October 2017 21:48:27 UTC+1, Vir Campestris wrote:
On 21/10/2017 22:44, Yam man wrote:
replying to John Rumm, Yam man wrote:
Thanks John for reply we had friend of friend who is sparx and he
checked all
my work that I had disconnected earlier and confirmed no problems and
reconnected all up and confirmed you're earlier suggestions off faulty rcd
recommended replacement. But that is as far as he will go as friends
favours.
£20 to fit it if I get the rcd on Tuesday am. Hopefully this will be the
problem solved. Thanks for all help suggestions and advise I will let
you know
if this is solved.

I'm glad to hear that. I was getting nervous that you might hurt
yourself. Still, if John was helping you I wasn't going to get involved
- he knows far more than I do.

Andy

I thought the OP connected some earth or equipotential bond wire to some pipework, that would be my first suspicion


NT

Vir Campestris wrote:

Yam man wrote:

we had friend of friend who is sparx

I'm glad to hear that. I was getting nervous that you might hurt
yourself.

Yes, all that exposed busbar with both RCDs left "on" wasn't good, it
only takes a stumble, a surprising noise that makes you jump etc ...

replying to Andy Burns, Yam man wrote:
You're opinion please the busbar you mention is it the copper metal thing at
the bottom of the mcbs? so licking that clean ain't a good idea??:-) only
jesting I thank yous all for the help yous have giving me. Im not stupid with
electrics I'm really careful and little afraid. The busbar was never covered
it's like that always (needs cover?) The earth wire previously stated isn't
connected to nothing I removed and pushed back into wall behind bathroom sink
where it has been for over 6 years pic of it Inc. We have 4 main earth wires
coming from cu can you tell me on tt system were these would go? 1 goes to gas
pipe just 1 n half foot away from my gas meter I think? We're would other 3 go
to? Don't worry I'm not going hunting for them or anything just trying to
educate myself (and others reading) a little further on this type of system.
John explained how to test cu I'm not confident in my abilities to try that
hence why I didn't do it. Great forum some great help thanks to all .
https://www.homeownershub.com/img/bj
https://www.homeownershub.com/img/bk

Yam man wrote:

Im not stupid with electrics I'm really careful and little afraid.

It's useful to have respect for it!

The busbar was never covered it's like that always (needs cover?)

the busbar doesn't have to have a shield, though they are available for
some CUs (e.g. MK and BG) I was more suggesting you should turn the main
switch (or the RCD in your case) off before removing the cover.

Even if the RCD wasn't suspected to be faulty, a 100mA delayed trip
doesn't give very good protection from shocks.

On 23/10/2017 12:44, Yam man wrote:

replying to Andy Burns, Yam man wrote: You're opinion please the
busbar you mention is it the copper metal thing at the bottom of the
mcbs? so licking that clean ain't a good idea??:-)

Any of the common terminal strips (earth and neutral) and also the
strips of "fingers" that connect to the base of each of the MCBs are bus
bars.

Some CUs include a cover for the live bar for some extra protection.
However you always need to take care when a CU is open, since even when
"off" there are some live bits.

The earth wire previously stated isn't connected to nothing I removed
and pushed back into wall behind bathroom sink where it has been for
over 6 years pic of it Inc.

That was likely a supplementary bonding wire. It does not need to
connect back to the CU, but would usually connect to all the bits of
metalwork in the bathroom, that would be capable of bringing a voltage
(or even 0V or an earth reference) into the room.

See:

http://wiki.diyfaq.org.uk/index.php/...ng_and_Bonding

We have 4 main earth wires coming from cu
can you tell me on tt system were these would go? 1 goes to gas pipe
just 1 n half foot away from my gas meter I think? We're would other
3 go to?

1 will hopefully be the connection to you main earth - which is likely
to be an earth stake or spike.

The others are typically main bonding conductors. You would expect one
to go to each metallic service where it enters the house, so gas, and
water typically.

If you had oil heating for example, then the incoming oil pipe. If the
building had a steel frame, then perhaps that.

(sometimes you also see supplementary bonding conductors brought back to
the CU - this is not necessary, but its clear that some electricians
have not always understood the practice properly).

Don't worry I'm not going hunting for them or anything just
trying to educate myself (and others reading) a little further on
this type of system. John explained how to test cu I'm not confident
in my abilities to try that hence why I didn't do it. Great forum
some great help thanks to all . https://www.homeownershub.com/img/bj
https://www.homeownershub.com/img/bk




--
Cheers,

John.

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replying to John Rumm, Yam man wrote:
I've read lots on earth rods etc and still have yet to find 1 for my property
have found all 3 of my neighbors rods and connections but only visible earth
connection I see for mine is the bonding to the mains gas as stated earlier.
Is it possible in this tt system to have no earth rod or anyway sparx can tell
me if I have or not? Neighbours all are in between paving slabs.

--
for full context, visit https://www.homeownershub.com/uk-diy...e-1242228-.htm

Yam man wrote:

replying to John Rumm, Yam man wrote:
I've read lots on earth rods etc and still have yet to find 1 for my property

Your house appears to have been re-wired relatively recently (all
brown/blue cables and no red/black in CU) so you'd think the spark that
did that would have made sure it had an earth rod.

On 23/10/2017 21:44, Yam man wrote:

replying to John Rumm, Yam man wrote: I've read lots on earth rods
etc and still have yet to find 1 for my property have found all 3 of
my neighbors rods and connections but only visible earth connection I
see for mine is the bonding to the mains gas as stated earlier. Is it
possible in this tt system to have no earth rod or anyway sparx can
tell me if I have or not? Neighbours all are in between paving
slabs.

There was a time where using an incoming metal piped service was
considered acceptable as a main earth connection. Needless to say its
deprecated these days - especially with gas pipes as they frequently get
replaced with plastic.

The consumer unit and the wiring looks fairly new (its modern colours
for starters). By rights the earthing should have been tested at the
time that work was done. Its possible there is a rod that you have not
yet found, or may be that your gas pipe connection is all you have. You
electrician will have the kit necessary to test it. If you can't find a
rod, then it would be prudent to fit one, although it does not mean you
are in any immediate danger since gas pipes if all still made from metal
will probably function as well as a typical earth rod (even if you have
no guarantee they will continue to do so into the future).


--
Cheers,

John.

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replying to John Rumm, Yam man wrote:
Hi thanks for that it seems as though I have only earth to the mains gas as
can't find anything else any were in or around property. All our pipework in
this house is copper, steel or lead with a big metal bath. Old big property
newest part of it is the rewire awhile before I took over it 9-10 years ago

--
for full context, visit https://www.homeownershub.com/uk-diy...e-1242228-.htm

£4.09 13A UK Mains 240V Power Socket Safe Plug Tester - Safety Polarity/Earth Checker
is an easy way to check all sockets for missing earth etc,
http://www.ebay.co.uk/itm/13A-UK-Mai...4AAOSwnLdWtJfk

replying to Yam man, Yam man wrote:
Thanks for all help guys it turned out to be an unrelated to my work or the
red. You were correct 1st John it was a neutral and earth short. It was on
the other side of my loft on a lighting cable the previous owner had screwed
the light rose to ceiling going through cable in process. When I've disturbed
cables it's contacted and bingo problem solved.

--
for full context, visit https://www.homeownershub.com/uk-diy...e-1242228-.htm

On 17/11/2017 14:44, Yam man wrote:
replying to Yam man, Yam man wrote:
Thanks for all help guys it turned out to be an unrelated to my work or the
red. You were correct 1st John it was a neutral and earth short. It was on
the other side of my loft on a lighting cable the previous owner had
screwed
the light rose to ceiling going through cable in process. When I've
disturbed
cables it's contacted and bingo problem solved.

Thanks for the update. Glad you got it sorted.

(reminds me of ages ago when I rewired a neighbours place... he assured
me he could put the boarding back in the loft. Got a call later - lights
not working upstairs. You can guess what happened - he screwed a loft
board down straight through a new cable)

--
Cheers,

John.

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Yam man m wrote:


https://www.homeownershub.com/uk-diy...from-lighting-
circuit-help-please-1242228-.htm

You probably don't need a new RCD then! There was probably nothing
wrong with it - just doing its job.


--

Roger Hayter