One Way Lighting Circuit

[GAZHUDDS]

no you would wire all the circuit in 1.0mm or 1.5mm

 

[Bane]

Right.

Last week at work I'm sure we did all the lights in 1.5 and switches in 2.5 (Or vice versa).

 

[wayne]

shouldn't change cable size unless goihg through a fuse/mcb ...unless the original CPD is rated small enough

one way switching; from the source(mcb/fuse) to a switch through the sw to the light .neutral taken direct to the light .

17th edit is line not live

just thought i'd join in

 

[Bane]

Cheers and Hi Wayne

Can someone explain to me then, why the N becomes Live in one way then, when converted to 2 way. There is effectively 3 Live wires???

 

[spark-doctor]

You only need to switch the line/phase wire, so you use the neutral wire as a return path from the switch to the lamp.

 

[andy8758]

Hi Bane - After reading this thread - is this an obscure wind-up? Are we really discussing how one-way and two-way switches work?

Doesn't everyone know the IEE change the name of the 'Live' every 5 years to keep everyone on their toes? As we move from Phase to Line I understand that for the next version of Regs we will be calling it "Le Bang" apparently part of European Harmonisation.

OK Bane, maybe you are a student, but I thought wiring lighting circuits was covered in week 1 of your apprenticeship? Meanwhile the other guys have given you the answer so I guess I shouldn't take the mickey any further.....

lol!

 

[GAZHUDDS]

The black cable that is going to the switch is not a neutral its the switch wire or one of the strappers. By the way a neutral is always considered a live cable thats why we use terms like 'phase' conductor, remember that for college

 

[Bane]

Andy8758? Yes, the moon really is made from cheese.

GAZHUDD. Cheers for that

Is the Neutral always the return path then?

 

[GAZHUDDS]

The neutral is the return path from the load in this case the light fitting.

 

[Bane]

Got it.

Power comes down the Phase.
I press the switch.
Power returns via the N (hence the sleeving) and powers the lamp.

Phew! Now, let someone tell me that's wrong