Job Overview

• To carry out the installation, inspection, testing, maintenance, fault diagnosis, and repair of 415V diesel generator

  systems, associated switchgear, distribution networks, and electrical infrastructure. The postholder will ensure safe,

  reliable, and efficient operation of power generation assets while maintaining compliance with statutory regulations,

  electrical standards, and site safety requirements.

Main Duties

• Generator Maintenance & Operations

•  

  Perform planned preventative maintenance (PPM) and reactive maintenance on 415V diesel generator sets.

•  

  Diagnose and repair electrical faults affecting generators, control systems, alternators, and distribution

  equipment.

•  

  Carry out generator load testing, synchronization checks, and operational performance assessments.

•  

  Monitor generator performance and recommend improvements to reliability and efficiency.

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  Maintain generator control panels, protection relays, automatic transfer switches (ATS), and synchronizing

  equipment.

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  Support generator overhauls and major maintenance activities.

   

  Electrical Testing & Inspection

•  

   Conduct periodic inspection and testing of electrical installations in accordance with current regulations and

  standards.

• Complete Electrical Installation Condition Reports (EICRs).
• Perform dead and live testing, including: · Continuity testing
• Insulation resistance testing · Earth fault loop impedance testing
• Prospective fault current measurements · Earth electrode testing 
• RCD testing · Phase rotation verification 
• Verify compliance of electrical systems and identify remedial actions.
• Produce detailed test certificates and inspection reports.

Fault Finding & Repairs 

•  Investigate electrical failures using test equipment and diagnostic techniques. 
•  Repair faults on: 
•  Generator control circuits 
•  Motor control systems
•  Distribution boards
•  Switchgear 
•  Cable installations 
• Protection devices 
•  Undertake emergency response repairs to restore power generation capability.
•  
• Safety & Compliance 
• Ensure compliance with Electricity at Work Regulations and relevant industry standards. 
•  Follow safe systems of work, Lock Out Tag Out (LOTO), Permit to Work, and isolation procedures.
•  Carry out risk assessments and method statement reviews. 
• Ensure all work complies with BS 7671 Wiring Regulations and site procedures. 
• Maintain accurate maintenance records and inspection documentation.
•  
•  Documentation & Reporting 
•  Record maintenance activities using the site's Computerised Maintenance Management System (CMMS). 
• Complete commissioning reports, inspection certificates, and defect reports. 
•  Update electrical drawings and documentation where required.
• Report equipment defects and recommend corrective actions.

What we are looking for

• Essential

  Recognised Electrical Apprenticeship or equivalent.

  City & Guilds Level 3 Electrical Installation or Maintenance qualification.

  City & Guilds 2391, 2394/2395 Inspection and Testing qualification (or equivalent).

  BS 7671 Requirements for Electrical Installations (18th Edition Wiring Regulations).

  Full UK Driving Licence.

  Experience maintaining and fault-finding on 415V diesel generator systems.

  Experience with low-voltage power generation and distribution equipment.

  Experience carrying out electrical inspections and testing on industrial installations.

  Knowledge of generator synchronisation and load-sharing systems.

  Experience working on switchgear, motor control centres, and protection systems.

  Ability to interpret electrical schematics and technical drawings.

• Experience using electrical test instruments and diagnostic equipment.
• Knowledge of protection relays, ATS systems, and generator control systems.
•  
•  Desirable
•  Low Voltage Authorised Person qualification.
• CompEx qualification. · Generator manufacturer training (Cummins, Caterpillar, Perkins, MTU, FG Wilson, etc.). 
•  IOSH or NEBOSH certification. 
• First Aid at Work qualification.
•  
• Personal Attributes 
•  Safety-focused approach to work. 
•  Reliable and self-motivated. · Flexible and adaptable. 
•  Strong attention to detail. 
•  Ability to remain calm under pressure during power system failures.
• Effective communication and teamwork. 
•  Problem-solving and analytical thinking.