Electrical Service Technician (EST)
Electrical
A course by
Toi Ohomai Institute of Technology
A part-time evening course for those already working in the electrical industry to become an Electrical Service Technician, combining theory and practical skills with a focus on safety and service of electrical appliances.
$ENQUIRE
Interested in this course? Enquire now for Domestic & International pricing
Core skills this course teaches
Service and install large electrical appliances
Students will learn to install and maintain large appliances such as refrigeration units, air conditioners, and three-phase equipment.
Emphasise electrical safety and compliance
Demonstrate safe working practices and understand safety protocols for the electrical industry.
About This Course
This course is designed for people already working in the electrical industry who wish to gain the Electrical Service Technician (EST) qualification. The programme emphasises the repair, installation, and maintenance of electrical appliances up to 460 volts, both theoretically and practically. Students will be prepared for the EWRB practical assessment and theory examination, with a strong focus on safety, measurement techniques, and compliant working practices.
Course Content
- Servicing and installing large appliances, including commercial refrigeration and air conditioners
- Service, maintenance, disconnection, and reconnection of single-phase and three-phase electrical appliances (up to 460 volts)
- Safe working practices and safety protocols
- Electrical measurement techniques
- Preparation for EWRB practical assessment
- Completion of theory examination through EWRB ASPEQ
Entry Requirements
Currently working in the electrical industry
Completion of a First Aid and CPR course
Build towards these roles
Electrical service technician (under supervision)Installation and repair of a wide range of electrical appliancesWork towards full EWRB registration
Build skills in these industries
Electrical EngineeringBuilding ServicesMaintenance & Repair
Known for hands-on, industry-aligned education, Toi Ohomai focuses on giving learners real skills that lead to real outcomes. With strong employer connections, supportive teaching, and clear pathways across certificates, diplomas, and degrees, it’s a place where learning stays relevant and confidence grows over time. Courses span trades, construction, business, health, creative industries, technology, and primary industries, helping learners build experience and momentum for whatever comes next.
