Volt drop three phase

[SimpleSimon]

When calculating volt drop on three phase, I can't remember if I my calculation is using the total current on all three phases or just each individual one.
So each phase at 400v is 3.8A. My calculation was 2.5mm minimum. A three phase motor run in SWA. The run is 200M underground.

 

[Sparky Ninja]

Individual conductors.

Ib = P/(√3xUL)

vd = ((mv/A/m) x Ib x L) / 1000

 

[SimpleSimon]

Just what I thought. 2.9% 2.5mm min. Cheers Widdler. Ain't been on here for a well hope all is well with you.