Electrical Rewires

Emergency lighting should operate automatically and give adequate light to enable a safe evacuation of the building, and employers are responsible for ensuring the upkeep of these systems.

At Test North West, we are committed to ensuring that our customers have a full overview of and confidence in the intrinsic safety of their emergency lighting installations.

We provide a professional Periodic Inspection service in line with the requirements of Emergency Lighting Regulations BS5266.

  • We can work out of hours to minimise disruption, at no extra cost
  • We provide certification detailing our inspection procedures and outlining any issues that may arise.
  • We can carry out remedial repairs where required

Testing Emergency Lighting

It is really important to maintain your emergency lighting system. Maintaining your emergency lighting units is important to ensure that lighting tubes are actually working and that the back-up battery is capable to last the full duration required by the standards. The “responsible person” of a business or organisation ensures that the periodic checks are carried out and documented.

To make the testing of your emergency lighting units quicker you can install self-test emergency lighting. These units automatically replicate a power cut, checking their own circuitry and functionality and should a fault be found the units create both a visual and audible warning.

Standards BS 5266-8:2004 and BS EN 50172:2004 describe the testing of emergency lighting units.


Switch off the mains power supply to the lighting unit. Often, a separate switch with a ‘fish key’ is installed allowing the testing of emergency lights without having to switch off all power. Walk past all emergency lights to ensure they are working. Note any defects and get repaired immediately. Record your results in your fire safety logbook.


Switch off the mains power supply to the lighting unit. Leave the units illuminated for the rated period (usually three hours). The lights should be on for the whole period. If lights fail within this time, replace the back-up battery.