Lighting circuits and possible cross-over

[Gary Tollison]

Hello.
I have a possible issue with the lighting circuits in my house.
There are two lighting CCTs:

Dropbox - 01.JPG - https://www.dropbox.com/s/ike2aygjja64pfm/01.JPG?dl=0

1 LIGHTS supplies:
Lounge
Kitchen
Downstairs toilet

2 LIGHTS spplies:
Hall
Upstairs landing
Upstairs bedroom
Upstairs spare room
Upstairs bathroom

In the hall, there is a doble switch, one controlling the upstairs landing light, and the other controlling the hall light.

Dropbox - 02.JPG - https://www.dropbox.com/s/3cech5ldpcaj8ky/02.JPG?dl=0

here's where I'm confused, but there's nothing new there.

With 1 LIGHTS CB tripped, and 2 LIGHTS CB still on, all lighting on 1 LIGHTS can still be powered on by operating the downstairs LANDING light switch.

and...

With 2 LIGHTS CB tripped, and 1 LIGHTS CB still on, the upstairs landing light can be operated with the downstairs landing light switch.

and...

upstairs landing, bedroom, spare room and bathroom lights can be operated with the downstairs or upstairs landing light switch.

I am not convinced that this is normal, even though my wife assures me that the "electrician" who did the installation some years ago said it was all above board and legal.

Any input on the matter?

Thanks,
Gary

 

[Octopus]

When did this start happening?

 

[Pete999]

Hello.
I have a possible issue with the lighting circuits in my house.
There are two lighting CCTs:

Dropbox - 01.JPG - https://www.dropbox.com/s/ike2aygjja64pfm/01.JPG?dl=0

1 LIGHTS supplies:
Lounge
Kitchen
Downstairs toilet

2 LIGHTS spplies:
Hall
Upstairs landing
Upstairs bedroom
Upstairs spare room
Upstairs bathroom

In the hall, there is a doble switch, one controlling the upstairs landing light, and the other controlling the hall light.

Dropbox - 02.JPG - https://www.dropbox.com/s/3cech5ldpcaj8ky/02.JPG?dl=0

here's where I'm confused, but there's nothing new there.

With 1 LIGHTS CB tripped, and 2 LIGHTS CB still on, all lighting on 1 LIGHTS can still be powered on by operating the downstairs LANDING light switch.

and...

With 2 LIGHTS CB tripped, and 1 LIGHTS CB still on, the upstairs landing light can be operated with the downstairs landing light switch.

and...

upstairs landing, bedroom, spare room and bathroom lights can be operated with the downstairs or upstairs landing light switch.

I am not convinced that this is normal, even though my wife assures me that the "electrician" who did the installation some years ago said it was all above board and legal.

Any input on the matter?

Thanks,
Gary

Whereabouts in the UK are you situated?

 

[Gary Tollison]

Am in Peterborough.
I’m not sure how long it’s been like this, I only discovered it recently by chance when I changed a lightswitch like for like. And yes I got the wires in the correct holes

 

[Gary Tollison]

However, with both 1 & 2 circuits energised, they behave normally

 

[westward10]

Are you saying with either circuit breaker off, not both all lights still function.

 

[Pete999]

Am in Peterborough.
I’m not sure how long it’s been like this, I only discovered it recently by chance when I changed a lightswitch like for like. And yes I got the wires in the correct holes

Post Code?

 

[Pete999]

Post Code?

 

[Gary Tollison]

Yes.
When either CB is off, the lights they only function as mentioned above.

 

[westward10]

But the landing switches need to be in a certain switching position for this to happen?

 

[Gary Tollison]

Yes

 

[westward10]

They are interconnected then possibly at the switches.

 

[telectrix]

shared neutrals????.

 

[westward10]

shared neutrals????.

I don't think he has a tripping issue. It seems both mcbs need to be off to isolate either circuit.

 

[Gary Tollison]

There is no tripping issue, as neither CB’s have tripped at all.
It’s only when either one CB is off and the other is on.
So Westward wins the toaster
Will keep you updated...

 

[telectrix]

so do i win the kettle?

 

[Pete999]

There is no tripping issue, as neither CB’s have tripped at all.
It’s only when either one CB is off and the other is on.
So Westward wins the toaster
Will keep you updated...

Gary haveyou read my PM of an offer to come and take a look at your problem? if you don't want any help please at least let me know.

 

[Gary Tollison]

Oops sorry for the lack of reply!
I’ll let you know if I do need help
thank you for the offer!

 

[Pete999]

There is no tripping issue, as neither CB’s have tripped at all.
It’s only when either one CB is off and the other is on.
So Westward wins the toaster
Will keep you updated...

Gary haveyou read my PM of an offer to come and take a look at your problem? if you don't want any help please at least let me know.

Whereabouts in the UK are you situated?

It was part of an offer to help, jim_e_ jib so why the dumb post?

 

[Octopus]

so do i win the kettle?

Nope - the wooden spoon!

 

[Octopus]

OP - is this the switch you asked about moving a few months ago?

 

[Gary Tollison]

Lol the wooden spoon wasn’t considered, but it might be now!

Murdoch, no it isn’t the switch I was asking about morning. Still haven’t done that yet

 

[Octopus]

Am in Peterborough.
I’m not sure how long it’s been like this, I only discovered it recently by chance when I changed a lightswitch like for like. And yes I got the wires in the correct holes

So it worked before ............. human intervention can create issues.

Sorry if this isn't what you want to hear.

 

[Gary Tollison]

Westward, you are the winner of a nice, brand new shiny toaster!
The issue was indeed cross-over.
I checked the switch again, (after safe isolation and testing) and discovered I had somehow managed to get two wires swapped.
So, after rectifying my goof, (and more testing), all is working well again, and there is no longer any weird switching issues when either CB is tripped!
Thanks for all y'all's input!
Cheers,
Gary

 

[Pete999]

So my offer of help wasn't ever required then Gary, thanks for letting me know.

 

[Octopus]

I’m not sure how long it’s been like this, I only discovered it recently by chance when I changed a lightswitch like for like. And yes I got the wires in the incorrect holes

Edited that for you ..............

 

[Gary Tollison]

Pete, I did say that if I did need help I would let you know.
But I managed to sort the issue out myself, and I did thank you for the offer.
I do apologise if I have offended you in any way.

 

[Jim_e_Jib]

Gary haveyou read my PM of an offer to come and take a look at your problem? if you don't want any help please at least let me know.

It was part of an offer to help, jim_e_ jib so why the dumb post?

Hi Pete - sorry - fat fingers on a touch screen! I actually thought it was a very kind offer.

 

[Pete999]

d

Hi Pete - sorry - fat fingers on a touch screen! I actually thought it was a very kind offer.

Thanks Mate I did wonder that's all, finger need to go on a diet then.

 

[telectrix]

i need my belly to go on a diet. need a mirror to check if my feet are still attached.