Cable size & feeder load calculator
DEWA Regulations for Electrical Installations — 2017 Edition
SEC.4 / APP.5 / APP.9
Load current
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Sec 4.2.3
MCCB
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Sec 4.7.2
Cable size
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App. 5
ECC size
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Sec 5.3.1 / App. 9
Max voltage drop 4% of nominal supply, point of supply to load (Sec 4.2.3). Min conductor size 2.5mm² lighting, 4mm² sockets (Sec 4.2.2). Verify against manufacturer datasheet and site derating factors before final specification.