3 Phase Design current

[Legendofzelder]

Hello

I’m still at college and learning at the moment so apologies if this question is simple to answer but I’m just second guessing myself 

part of the design project for my level 3 qualification asks for a cable to be run for swimming pool equipment 

the specification is:

Pool equipment requires a 32A 400V 3 phase supply.(All equipment to be installed by a specialist contractor)

Supply using 5 core 70 degree thermo plastic SWA clipped directly 

Pool Area is at 40 degrees

So my understanding is that 

Ib = 32A

Ib = In

so In =32A

Ca = 0.87 

so 32/0.87

It = 36.78

Reference Method C

table 4D4A for cable sizing

maximum demand is 96A

if I’m wrong I’d like to understand where im wrong my college is very hit and miss at replying atm

 

[Sidney]

Is the Ib total load or load per phase?