2 way lighting help please? | Page 3 | on ElectriciansForums

Discuss 2 way lighting help please? in the Australia area at ElectriciansForums.net

D

DPrice

Im currently coming to the end of my 1st year at college (C&G 2330 Level 2). So my knowledge is some what basic/getting there.

I am reasonably confident at basic wiring and fault finding so i do now and again lend a helping hand to family.

So heres the problem - My grandad was decorating the other day and to do a proper job took off all light switches and sockets in the living room/hallway/staircase.

He then rang me a few days later and asked if id mind going over and refitting some new sockets/switches which i happily did.

However there is 1 problem - At the bottom of the stairs (in the hallway), there is a 2 gang 2 way switch, 1 side operating the hallway spotlighting, the other operating the light at the top of the stairs (which is also connected to a 1 way switch at the top of the stairs).

BUT there is only 1L and 1N from upstairs, and 1L and 1N from hallway?

And in the back of the switch i have 2 Commons, L1 L2 and another L1 L2.

Is there a way i can get both lights working simultaneously off this switch, whilst still being able to operate the upstairs light with the switch upstairs without 3 core cable? (for instance being able to have the hallway lighting on, whilst being able to turn the stairs light on at the bottom, and off when get to the top?)

If not, (which i think i'm right in saying i cant without 3 core) is there a way to make the hallway lighting permanently live and only have a single switch there for the stairs? (as the spotlights also have push button which could be used instead)

I hope this isn't too confusing.

Any help appreciated
 
Last edited by a moderator:
A borrowed neutral is usually found on 2 way lighting circuits at the top of stairs.

It basically means that the live feed is taken from the downstairs lighting circuit and the neutral from the upstairs circuit.

Because upstairs and downstairs lighting circuits are fed from different RCDs in a 17th Ed CU you end up with nuisance tripping due to excess neutral current in the upstairs lighting circuit.
 
A borrowed neutral is usually found on 2 way lighting circuits at the top of stairs.

It basically means that the live feed is taken from the downstairs lighting circuit and the neutral from the upstairs circuit.

Because upstairs and downstairs lighting circuits are fed from different RCDs in a 17th Ed CU you end up with nuisance tripping due to excess neutral current in the upstairs lighting circuit.

Well said!

I've had a few to write any sense
 

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