2 way wiring - or not? | Page 2 | on ElectriciansForums

Discuss 2 way wiring - or not? in the Australia area at ElectriciansForums.net

G

Gerry24

Could do with a bit of advice from someone a bit more experienced in 2-way lighting circuits than me.

The customer has a guest house with 3 consumer units, one for the owners living accommodation and some parts of the guest house, one for the rest of the guest house, and one for the outside bits that include a number of small industrial units in the field behind. It was an old farm that has been converted.

He asked me to replace the downstairs switch on a 2-way arrangement with switches at bottom and top of stairs for lamps at top of stairs. The downstairs switch had a blanking plate on it which the customer said he fitted when the switch stopped working some time ago. The switch at the top of the stairs is a push button time delayed switch.

When I took the blanking plate off I found 4 conductors coming into the switch, i.e. L, N and cpc from a bit of T&E and one single neutral. The CPC was just loose but the L and both N's were connected together with a single bit of choc bloc to the outgoing conductors so all conductors, except cpc, were all connected together. The switch at the top of the stairs was working. The T&E is fed from a different mcb on a different consumer unit to the single N. The single N comes into the switch from another switch on the other side of the wall. All conductors then leave the switch and are buried in the wall all the way to the switch at the top of the stairs. I checked them with a trailing lead and there was continuity between the 2 switches.

But at the time delayed switch at the top of the stairs the N from the T&E was terminated in a bit of choc bloc and the L and single N were connected to the switch.

The customer wants me to fit another time delayed switch at the bottom of the stairs so that the lamps at the top of the stairs can be switched on from either location. I cannot figure out how to do this with the 2 separate circuits and the wiring currently in place. :confused:

Any advice would be gratefully appreciated.


Thanks.
 
I'm going with a switch line as he says it's coming from another switch. Could even be a permanent.

When you say all conductors in one single choc block, are you meaning that both the L&N are together in one block?
Also how many cables are there in the blanking plate? Is it 2 T&E cables , one from the MCB and connected up to another going to the switch?
 

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