Two Circuits feeding 2G switch

[MDJ]

Hi all,

I am struggling to get a definate answer on this one, and wondered if any of you know the truth of this please (with the relevant source data if possible):

Lets say we have two circuits as follow (both sharing a common RCD):

Circuit 1 - Downstairs lights - fed from a B6 MCB
Circuit 2 - Outside light - fed from another B6 MCB

The issue is that the outside light switch shares a 1G backbox with the hallway light switch (both seperately connected to a 2G switch). So you have two seperate circuits inside the same backbox. Nothing is inter-connected except the PE obviously.

Is this permitted? Or should it have a box seperator within the back box, or should there be mechanical connection between the MCB trips etc (so they both get turned off together)?

Any suggestions appreciated please.

Thank you.

Mick

No problem and no label needed either.

 

[Guest55]

its funny how the lesser spotted domestic installer gets twitchy about having more than 1 circuit in the same place.

[/sarcasm]
maybe we should do away with CU's altogether and just have individual switch fuses cos all them circuits in 1 unit must be lethal !!!
[sarcasm]

;-)

 

[D Skelton]

circuits in 1 unit must be lethal

;-)

I did point that out in my first reply lol

 

[ipf]

Came across one last week. 6 gang grid in 10 year old offices. Four of the switches were fed from different circuits, ie four circuits in use, obviously. The other two ways were double pole emegency test switches....each one switching two separate lives for the emergency lights on the four circuits.
Thoughts ?

 

[MDJ]

Came across one last week. 6 gang grid in 10 year old offices. Four of the switches were fed from different circuits, ie four circuits in use, obviously. The other two ways were double pole emegency test switches....each one switching two separate lives for the emergency lights on the four circuits.
Thoughts ?

No problem, I have seen 24 gang light switches in Pubs with 6 circuits in them, 4 rows of switches on each feed, so what? whats the big problem, I am amazed at this thread and some of the replies to be honest.

 

[ipf]

No problem, I have seen 24 gang light switches in Pubs with 6 circuits in them, 4 rows of switches on each feed, so what? whats the big problem, I am amazed at this thread and some of the replies to be honest.

Seen them many a time in factories. Just making conversation, not replying to anything and no problem.......don't get them wishy washys in a twist. :tounge_smile:

 

[MDJ]

How many houses in the UK has a 2 gang switch at the bottom of the stairs, one for the hall lights from the down stairs circuit and the other switches the upstairs lobby light from the upstairs circuit, I would hazzard a guess at over a million, this is nothing new LMAO

- - - Updated - - -

Seen them many a time in factories. Just making conversation, not replying to anything.......don't get them wishy washys in a twist.

:rofl: TOO LATE LOL

 

[Guest111]

hmmm , if you say so.
all sounds a bit wishy washy to me.
and i aint agreeing with jack sh*t so dont get cute.

;-)

Why are you bringing the chinaman into it? aint he in a different post trying to con Glenn? lol:confused5:

 

[Darkwood]

The confusion here to labeling 400v is the 17th edition originally required it to be marked up if 400v was to be found in say a switch but with the amendments this changed and the clause was reworded so that it was voltage over 230v to earth (not phase to phase).

Because this amendment wasn't pointed out its often still tripping people up.

 

[MDJ]

The confusion here to labeling 400v is the 17th edition originally required it to be marked up if 400v was to be found in say a switch but with the amendments this changed and the clause was reworded so that it was voltage over 230v to earth (not phase to phase).

Because this amendment wasn't pointed out its often still tripping people up.

The question from the OP was regarding a 230 volt domestic light switch with 2 different feeds in it from 2 different 6 amp MCBs Bud.

 

[Guest55]

it was dropped with the 16th edition i think , never made it to 17th.

- - - Updated - - -

the whole thread is confused.com lol.

 

[Darkwood]

The question from the OP was regarding a 230 volt domestic light switch with 2 different feeds in it from 2 different 6 amp MCBs Bud.

Yes and i answered that but the thread went onto mention fixing labels where 2ph were present at switches...just replaying to that but forgot to quote it ...oooops

 

[MDJ]

it was dropped with the 16th edition i think , never made it to 17th.

- - - Updated - - -

the whole thread is confused.com lol.

Thats Skelton Fault for getting confused earlier lol, Bloody south Coast sparks HAHA

 

[MDJ]

Hi all,

I am struggling to get a definate answer on this one, and wondered if any of you know the truth of this please (with the relevant source data if possible):

Lets say we have two circuits as follow (both sharing a common RCD):

Circuit 1 - Downstairs lights - fed from a B6 MCB
Circuit 2 - Outside light - fed from another B6 MCB

The issue is that the outside light switch shares a 1G backbox with the hallway light switch (both seperately connected to a 2G switch). So you have two seperate circuits inside the same backbox. Nothing is inter-connected except the PE obviously.

Is this permitted? Or should it have a box seperator within the back box, or should there be mechanical connection between the MCB trips etc (so they both get turned off together)?

Any suggestions appreciated please.

Thank you.

Mick

Over a million homes in the UK has this feature, countless factories, shops and public building too, possibly hundreds of thousands.

 

[Geordie Spark]

Thats Skelton Fault for getting confused earlier lol, Bloody south Coast sparks HAHA

Aye, he's not been the same lad since that Emma Whatserface invited him to come up and see her sometime.
He's totally ----- struck.