MO.tool
STANDARDS & FORMULAS

Power a Circuit

Circuits, loads and wiring - and final boards split into two RCD sections the Abu Dhabi way.

Standards and regulations

  • EWR 2020
    Abu Dhabi Electricity Wiring Regulations

    100 mA for fixed equipment, 30 mA where people use appliances, bathrooms 30 mA (5.4.8, 9.3).

  • ADDC checklist
    ADDC electrical drawings checklist

    Two earth leakage zones (100 + 30 mA), spare breakers, balanced phases, a bathroom on one phase.

Design rules it applies

  • Each section behind its own RCD, sized for its load
  • A bathroom’s circuits on one phase and 30 mA
  • A water pump 30 mA
  • At least one spare breaker per section
  • A three-phase final board: 14 ways at most
  • The three phases balanced

For reference. MO.tool works these out to help your design; the engineer remains responsible for it. Always check the edition of each standard your project uses and the requirements of the local authority (DEWA, ADDC, Civil Defence…).

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