Question { 5730 }

How to calculate the size of the cable? for exp i want to
use the load of 10HP

Answer

Hai
its is very simple
load=10 HP
10 X 0.746= 7.46 KW

7.46 X 1000/ ROOT 3 X 0.8X 415= 12.97 A= 13 A

So our require cable shouls be withstand 13 A AT full load
condition .

u will reff any one cable manufacture catalouge which
cable suitable for the same load . but that cable to be
suitable for Appx -18A because u will consider the
derating factor for cable .

Question { IGCAR, 16212 }

IS RTCC AND OLTC REQUIRED FOR 500 KVA 11KV/433V TRANSFORMER
FOR AN INDUSTRY?

Answer

it will be based on the voltage Fluctuation report/ survey
of your factory. if you consider onload /off load tap
changer u should consider RTCC/ OLTC

Question { Thomson Reuters, 5181 }

If u have 60KVA UPS, than tell me how systems ( computers )
u may connect?

Answer

Consider
200 VA / System
60kva x 0.8 = 48 kva ( Efficiency =0.8 )
Calculation
= 48000/200 =240 workstation or system