Creating an Effective Electrical Maintenance Schedule for Industrial Sites

Reactive maintenance, fixing things only when they break, is expensive. Unplanned downtime in a factory or warehouse can cost thousands of pounds per hour in lost production, missed deadlines, and emergency callout fees. A planned preventive maintenance programme identifies problems before they cause failure, keeps equipment running efficiently, and ensures compliance with the Electricity at Work Regulations 1989.

Monthly Visual Inspections

A competent person within your organisation should carry out a brief visual inspection of all distribution boards, switchgear, and critical machinery every month. Look for signs of overheating such as discolouration, smell of burning, or buzzing sounds. Check that access panels are secure, warning labels are legible, and emergency stops are unobstructed. Record the findings in a maintenance logbook.

Quarterly Testing

Every three months, a qualified electrician should test and record the operation of all RCDs and earth leakage devices. Emergency stops and isolators should be function-tested. Cable routes should be inspected for mechanical damage, particularly in areas with forklift traffic or where temporary cables have been laid. Portable appliance testing should be kept current on all workshop and office equipment.

Annual Comprehensive Inspection

Once a year, a full fixed wire inspection and test, equivalent to an EICR, should be carried out. Every distribution board is opened and inspected, all terminals are checked for tightness, and full electrical testing is performed on every circuit. Thermal imaging is highly recommended at this stage. It identifies hot spots at connections and inside equipment that are invisible to the naked eye.

• Thermal imaging of distribution boards and main switchgear
• Tightening of all busbar and cable lug connections to manufacturer torque settings
• Testing of protection relay settings and operation
• Calibration verification of panel meters and instrumentation
• Inspection of cable containment for corrosion and damage
• Review and update of single-line diagrams and circuit directories

Benefits of a Maintenance Contract

Signing a maintenance contract with D3C Electrical gives you scheduled inspections without the hassle of booking each visit separately. We maintain a site-specific asset register, track test due dates, and provide compliance documentation for insurance and HSE audits. Our Leicester-based team can respond to emergency callouts on contracted sites with priority dispatch.