AutoCAD Schematics · Stamped Within 24–48 Hours

DEWA Stamped Single-Line Diagram (SLD) & Load Schedule Calculations

Direct Regulatory Answer

A Single-Line Diagram (SLD) and Load Schedule form the core technical submission for every DEWA electrical approval. Abbadi Tech’s licensed electrical engineers design stamped AutoCAD SLDs, calculate exact connected vs demand loads, select appropriate breaker curves and cable gauges, and deliver DEWA-ready packages within 24 to 48 hours.

Authority DEWA (Dubai)

Typical Turnaround 24 to 48

Submission Enrolled Direct Contractor Portal

Fast-Track Approval Enquiry

Upload your drawings or premise ID for an instant review.

Urgent Desk: +971 50 554 6943

Regulatory Context & Purpose

Understanding DEWA Stamped Single-Line Diagram (SLD) & Load Schedule

The Single-Line Diagram is the universal electrical roadmap of your property. It illustrates everything from the incoming supply cut-out fuse, main circuit breakers (MCCB/MCB), busbar ratings, cable gauges, and residual current devices (ELCB/RCD), down to individual branch circuits.

Who Requires This Approval?

Fit-out contractors needing urgent stamped electrical drawings for client spaces
Business owners facing DEWA application rejections due to drawing errors
Interior design consultants seeking certified MEP engineering support
Property managers documenting building electrical switchgear networks

The Approval Workflow

How Abbadi Tech Secures Your Clearance Step-by-Step

A systematic engineering trajectory eliminating rejection risks.

Load Take-Off & Diversity Calculations

We calculate total wattage, apply standard DEWA diversity factors, and establish maximum demand kVA.

Circuit Grading & Cable Sizing

We size conductors, circuit breakers, and earth continuity conductors according to BS 7671 and DEWA guidelines.

AutoCAD SLD Drafting

We draft the complete Single-Line Diagram detailing phase distribution (R-Y-B balance) and breaker ratings.

Engineering Stamping & Deliverable Package

We deliver stamped, submission-ready PDF and DWG drawing sets ready for instant portal upload.

Prerequisites & Paperwork

Required Documents for DEWA Submission

Ensure these documents are ready for immediate portal filing.

Existing Electrical DB Layout (or Hand Sketch)

Details of existing circuit breakers, incoming mains, and equipment lists.

Floor Plan with Equipment Locations

CAD or PDF floor plan detailing power sockets, AC units, and lighting arrays.

Premise ID / DEWA Account Copy

Utility details verifying sanctioned load limits.

Engineering Specifications

Key Technical Standards

Load must be evenly distributed across Red, Yellow, and Blue phases to prevent neutral overheating and voltage drop.
Residual current devices (RCD) must be rated at 30mA for general socket outlets and damp areas, and 100mA/300mA for lighting and fixed machinery.
Substation rooms and switchgear must be rated to withstand prospective short-circuit fault levels.

Common Rejection Reasons

Avoid These Pitfalls

Using outdated AutoCAD templates that do not reflect recent DEWA regulations on smart meter CT chambers.
Unbalanced phase calculations showing excessive neutral current.
Specifying cable cross-sectional areas that fail temperature derating calculations.

Technical Q&A

Frequently Asked Questions

Specific answers regarding authority regulations and processing in Dubai.

What is the turnaround time for a stamped DEWA SLD drawing?

Our electrical engineering team delivers complete, submission-ready Single-Line Diagrams within 24 to 48 hours upon receipt of site layout drawings.

Can you correct an existing SLD that was rejected by DEWA?

Yes. We frequently rectify rejected third-party drawings, redesigning load schedules and correcting phase balance to satisfy DEWA review queries.