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Delivering training services for the Built Environment and Utility sectors since 2004, we operate from our purpose-built training facilities and regional offices located in Southeast London, the East Midlands and West Yorkshire, with the use of over 100 training centres nationwide.

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Jointer's Appreciation (DNO)


The definition of Cable Jointing is simply the joining of cables with a connector or joint mechanism to suit the job. An Electrical Jointer is responsible for installing and maintaining underground power cables, joining said cable lengths and connecting underground cables to system parts such as overhead supply lines and electricity substations. But that's not to say that the Jointer’s job is an easy one; on the contrary. With so much responsibility working in potentially high-risk areas, techniques and terminology to learn, training is essential to ensure every Electrical Jointer is up to the job.

This Citrus Jointer’s Appreciation qualification gives delegates and employers an understanding of the skill, knowledge, and competence needed to work effectively and safely as an Electrical Jointer and Jointers’ Mate.

Course Outline

Through a mix of practical and theory-based exercises and tutorials, delegates will cover general knowledge and awareness of a Jointer’s responsibilities and participate in practical activities to learn best practices and operating methods.

The course reflects national standards and industry best practices and is fully accredited in line with regulations. In addition, choose to learn with Citrus, and delegates will benefit from our custom-built training facilities and customer-first approach.

Our occupationally and technically-experienced trainers coach delegates on this course in the Jointing School, completing the session with a practical observation and short answer question paper. They must pass the assessment to qualify for the Citrus certificate of attendance, valid for three years.  

Course Programme

Delegates taking this Jointer’s Appreciation training will cover knowledge, skills and operating practice.

Course content includes:

  • Jointing practices and procedures
  • How to strip and prepare cables
  • Low voltage and high voltage safety and awareness training
  • Selecting and using the correct tools and equipment
  • Identifying types and compounds of low voltage and high voltage cables
  • Using test lamps
  • Conducting a low voltage service joint
On Completion

Upon successfully completing this qualification, delegates will:

  • Have a good understanding of the electrical network   
  • Understand the skills of a Jointer, their role and responsibilities
  • Use and understand electrical terminology
  • Implement safe working practices   
  • Know the part of the support person  
  • Use safety equipment correctly   
  • Identify and use the correct tools and equipment   
  • Recognise different types of cables  and their uses
Who Should Attend?

This Citrus Jointer’s Appreciation is designed to introduce anyone who wants to become a Jointer to the roles and responsibilities involved and as an awareness course for Managers of technical jointing staff. 

Course Duration

Delegates take this comprehensive training in a one-day course. 

Why Citrus?

We dedicate our efforts to unrivalled quality and the customer experience at Citrus Training. As a result, we are the leading UK-based provider of health, safety and technical training and assessment services to the Built Environment and Utility sectors. 

Citrus Training serves 85 of the top 100 building services companies in the market. With over 20 years of collective experience, we offer advice and guidance for new and experienced entrants looking to work within the IDNO/DNO industry. 

Our Electrical training is accredited, regulated, and of an exceptionally high standard. Delivered by our Electrical Safety trainers and DNO Trained Assessors, they also carry out competency pre-assessment and testing to work on IDNOs and DNOs. 

Finally, we teach and promote current industry and legislative requirements to ensure delegates take them forward into their daily working lives, delivering courses at our nationwide, industry-leading and accredited training centres to offer the very best of training standards and quality assurance. 

Things You Need to Know

The content of this course includes awareness of periodic examinations of equipment but does not provide full training in maintaining equipment. Additional training is available. Contact us to learn more.

Delegates must be 18 or over. Before starting the course, they must inform their trainer of any special considerations, medication or physical restrictions that may cause difficulties in any part of the training.

All delegates must bring a passport photograph to the training to produce ID cards. 

Popular FAQ's

No, this is an awareness course only, it does not provide full training in maintaining equipment.

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