Scope and Limitations of Registered Master Electricians

The Scope and Limitations of Registered Master Electricians (RMEs) in the Philippines

The role of Registered Master Electricians (RMEs) in the Philippines is integral to ensuring the safety and efficiency of electrical installations across various sectors. Governed by Republic Act No. 7920, also known as the “New Electrical Engineering Law,” RMEs are licensed professionals authorized to perform a range of tasks related to electrical systems. However, their scope of work is well-defined and comes with specific limitations to ensure the highest standards of safety and compliance. This article delves into the detailed scopes and limitations of RMEs as outlined in the governing legislation.

Scope of Work for Registered Master Electricians

Registered Master Electricians are entrusted with several key responsibilities in the field of electrical engineering. These responsibilities encompass a broad range of activities, including the installation, maintenance, and repair of electrical systems. Specifically, RMEs are authorized to:

Install and Wire Electrical Systems:

  • RMEs can install and wire electrical machinery, equipment, and devices in residential, commercial, institutional, and industrial buildings. This includes power plants, substations, watercraft, and electric locomotives.
  • They are responsible for ensuring that these installations comply with the Philippine Electrical Code and other relevant standards.

Operate and Maintain Electrical Systems:

  • RMEs are tasked with the operation and maintenance of electrical equipment. This includes routine inspections, troubleshooting, and repairs to ensure that electrical systems function efficiently and safely.

Supervise Electrical Installations:

  • RMEs can supervise electrical installations, ensuring that the work is performed according to the required standards and regulations.
  • They can issue certificates of safe operating conditions for electrical installations with a connected load up to 500 kilovolt-amperes (KVA) and operating at voltages up to 600 volts.

Limitations of Registered Master Electricians

While RMEs have a significant role in the electrical engineering landscape, their scope of practice is subject to important limitations designed to maintain safety and professional integrity. These limitations include:

Capacity and Voltage Restrictions:

  • RMEs are limited to supervising and certifying installations with a total connected load not exceeding 500 KVA and operating at voltages not exceeding 600 volts.
  • For installations that exceed these limits, the supervision and certification must be carried out by a Professional Electrical Engineer (PEE) or a Registered Electrical Engineer (REE).

Design and Planning Prohibitions:

  • RMEs are not authorized to prepare electrical design plans, technical specifications, or valuations. These tasks require the expertise and signature of a PEE.
  • The creation of plans or designs for electrical systems, particularly those involving complex calculations and advanced engineering principles, falls outside the purview of RMEs.

Complex Installations and High-Voltage Systems:

  • Electrical installations involving complex systems, high-capacity machinery, or high-voltage applications must be overseen by a PEE or REE.
  • This ensures that such installations, which present higher risks and technical challenges, are handled by professionals with advanced training and qualifications.

Prohibited Practice Areas:

  • RMEs are restricted from engaging in areas of practice that require advanced engineering knowledge and skills, such as the preparation of detailed electrical engineering plans or specifications.
  • These areas are reserved for PEEs, who possess the requisite educational background and professional experience to handle such responsibilities.

Ensuring Compliance and Safety

The delineation of scopes and limitations for RMEs is essential to the regulatory framework governing electrical engineering practice in the Philippines. By clearly defining what RMEs can and cannot do, the law ensures that electrical installations are carried out safely and effectively, minimizing the risk of accidents and ensuring compliance with established standards.

RMEs play a vital role in the industry by handling routine installations and maintenance, allowing PEEs and REEs to focus on more complex and high-risk projects. This collaborative approach enhances the overall safety and reliability of electrical systems across the country.


Registered Master Electricians are crucial to the safe and efficient operation of electrical systems in the Philippines. Their scope of work includes installation, maintenance, and supervision of electrical installations up to specified capacity and voltage limits. However, their practice is limited to ensure that more complex and high-risk electrical engineering tasks are performed by higher-qualified professionals such as PEEs and REEs. Understanding these scopes and limitations helps maintain the integrity of the electrical engineering profession and ensures the safety and compliance of electrical installations nationwide.


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