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Free DEWA Electrical Exam Exam Prep

Dubai Municipality / DEWA Electrical Contractor Competency Exam

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What You'll Study

6 chapters covering the exam topics in this guide

DEWA Electrical Exam Exam Details

Dubai Municipality / DEWA Electrical Contractor Competency Exam

Administered by Dubai Municipality / Dubai Electricity and Water Authority (DEWA)

Official Source
70% required to pass (about 21 correct out of roughly 30 questions). An immediate re-sit is generally permitted if you fail.
Passing Score
Approximately
Questions
Approximately
Hours
Approximately AED 410 per attempt (set by DEWA/Dubai Municipality and subject to change). Confirm the current fee through the official DEWA portal before booking.
Exam Fee

Exam Content Breakdown

Based on the official Dubai Municipality / Dubai Electricity and Water Authority (DEWA) content outline

DEWA Regulations and Approval Procedures20%

DEWA supply characteristics (230/400 V, 50 Hz), approved-contractor requirements, drawing approval, labelling, certification and inspection items.

Earthing, Bonding and Protection25%

TN-S earthing, main and protective bonding, RCD/ELCB 30 mA additional protection, disconnection times, circuit breakers, fuses and discrimination.

Cable Sizing and Load Calculation20%

Current-carrying capacity, ambient/grouping/insulation derating, voltage drop limits, diversity, maximum demand and device co-ordination.

BS 7671 Wiring and Installation Practice15%

IEC conductor colours, IP ratings, concealed cables, bathroom zones, testing (insulation resistance, polarity, continuity) and fire safety.

Substation and Transformer Requirements12%

Switch/transformer room location and ventilation, RMUs, transformers, fault levels, access, earth electrodes and step-and-touch potentials.

Electrical Theory and Safety8%

Ohm's law, single- and three-phase power, voltage relationships, power factor, safe isolation and general electrical safety.

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6 Chapters

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DEWA Electrical Exam Exam FAQ

Official Dubai Municipality / Dubai Electricity and Water Authority (DEWA) Resources

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