Shortest cable run?

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I'm trying to work out the shortest cable run for the attached driveway lighting (excuse the ropey sketch!)

Lights are the green stars and as shown this needs 2 way switching. The distance between CU and 1st 2 way switch is negligible.

The shortest way I can think is
(1) 3 core (LNE) feed to 1st switch
(2) 4 core (2 x strappers, N, E) between switches (conduit method)
(3) 1 x 3 core from 2nd switch to remote light 50M away
(4) 1 x 3 core from 2nd switch back through all other lights

Giving longest run of approx 150M (2) + (4)

Or am I missing something?


20221116_170731.jpg
 
why not use remote switching, no need for strappers, just one 3 core 125m long

Do you mean wireless switching?

I should've mentioned the switch nearest CU is inside a building with a metre thick wall and 2nd switch is outside and needs to be a key switch.
Apologies!
 
Do you mean wireless switching?

I should've mentioned the switch nearest CU is inside a building with a metre thick wall and 2nd switch is outside and needs to be a key switch.
Apologies!
Quinetic will work
 
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