# What is the Normally Permitted Motor Ratings as per DEWA?

**URL:** <https://forumautomation.com/t/what-is-the-normally-permitted-motor-ratings-as-per-dewa/13801>\
**Category:** Electrical\
**Tags:** motor, motor-control\
**Created:** [December 29, 2025, 3:05pm UTC](https://forumautomation.com/t/what-is-the-normally-permitted-motor-ratings-as-per-dewa/13801 "2025-12-29T15:05:17Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Rabert](https://forumautomation.com/user_avatar/forumautomation.com/rabert/32/6784_2.png) [@Rabert](https://forumautomation.com/u/Rabert)\
**Post date:** [December 29, 2025, 3:05pm UTC](https://forumautomation.com/t/what-is-the-normally-permitted-motor-ratings-as-per-dewa/13801/1 "2025-12-29T15:05:17Z")

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## What is the Normally Permitted Motor Ratings as per DEWA?

Motor ratings are regulated by the **Dubai Electricity and Water Authority (DEWA)** to minimize starting current, voltage drop and system disturbance. The typically permissible motor ratings (without special approval or additional starting procedures) are shown below:

 ![image](https://cdn.forumautomation.com/original/2X/7/752ebce0b6d6eebfbbef38bc61940d211e70bc07.jpeg)

Normally Permitted Motor Ratings (LV – 415 V, 3-Phase)

## 1). Direct-On-Line (DOL) Starter

| **Motor Rating** | **Permission Status** |
| --- | --- |
| **Up to 7.5 kW (10 HP)** | Normally permitted |
| **\> 7.5 kW** | Not permitted with DOL (approval required) |

**Note:** DOL starting draws 6-7 times the rated current resulting in voltage drops that are inappropriate for heavier motors.

## 2). Star–Delta Starter

| **Motor Rating** | **Permission Status** |
| --- | --- |
| **7.5 kW to 30 kW (10–40 HP)** | Normally permitted |
| **\> 30 kW** | Requires DEWA approval / justification |

## 3). Soft Starter

| **Motor Rating** | **Permission Status** |
| --- | --- |
| **Up to 75 kW** | Generally permitted |
| **\> 75 kW** | Subject to DEWA study & approval |

## 4). Variable Frequency Drive (VFD / VSD)

| **Motor Rating** | **Permission Status** |
| --- | --- |
| **Up to 150 kW** | Normally permitted |
| **\> 150 kW** | DEWA load study & approval required |

**Note:** **[VFDs](https://forumelectrical.com/vfd-control-circuit-testing-step-by-step-procedure-for-reliable-drive-operation/)** are popular because they require less starting current and provide regulated acceleration.

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