R1+R2 On Lighting Circuit With 2 Way Switching

[crystaljohn]

If I have 2 way switching on a lighting circuit,this will mean that R1 will be a larger resistance due to the extra conductor lenght.

When completing an EIC, although I have provided the feed to that circuit in 1.5mm T&E, The 3C+e is 1.0mm, so what should I put in the form for the size of cable?

Also, the value of Zs will be greater on the circuit with the 2 w switching,so presumably this is the value that should be recorded?

I would be grateful for any advice.

 

[steptoe]

Smallest cable

Highest reading,

Remember and do the test 3 times with the switches in alternative positions

 

[crystaljohn]

Thanks Steptoe. I've got it.