Industrial Electrical Installations: What Makes Them Different (and How to Get Them Right)

Industrial work isn’t “just commercial, but bigger”

Industrial environments typically involve heavier loads, harsher conditions, and higher consequences if something fails. Installations must still follow the principles of BS 7671 design/verification, but the engineering approach has to reflect real-world industrial demands. 

Key considerations in industrial installations

1) Load and resilience

• Motor starting currents, duty cycles, power quality

• Future-proofing for new machinery

• Selective coordination so one fault doesn’t take down the whole site

2) Environment

• Dust, moisture, vibration, temperature swings

• IP ratings, containment, and industrial-grade accessories

3) Safety systems

• Emergency stops, isolators, lock-off procedures

• Clear segregation between control and power circuits

4) Verification and documentation

• Accurate drawings/schedules

• Proper testing and certification on completion (critical for audits and insurance conversations)

Typical industrial project types

• New distribution and containment

• Plant room and workshop upgrades

• Warehouse lighting and power

• Machinery supplies and isolation

• Three-phase upgrades and load balancing

Call to action: Planning an industrial upgrade? A short survey and load assessment up front usually saves time, cost, and disruption later.

3) Emergency Lighting Compliance: Monthly Tests, Annual Checks, and Simple Record-Keeping

Emergency lighting is a life-safety system

Emergency lighting supports safe evacuation when normal lighting fails. Under UK fire safety law, the “responsible person” must ensure fire precautions are maintained in efficient working order. 

The standard that sets expectations

In practice, emergency lighting testing routines commonly follow BS 5266-1, which is widely used as the benchmark for what good maintenance looks like. 

Typical testing routine (plain English)

Monthly functional test

• Short test to confirm the fittings illuminate on simulated power failure

• Check for damage and obvious faults 

Annual full-duration test

• A longer test (often “full rated duration”) to confirm batteries and fittings perform as required 

Don’t skip the logbook

The test itself is only half the story—recording it is what protects you during inspections, audits, or incident investigations. Government guidance is clear that fire safety measures must be maintained and kept in efficient working order.