Commissioning commercial and industrial electrical work

Separate the types of work

Shop lighting, office installations, three-phase distribution, machinery supplies and control-system changes are different jobs. A domestic scheme registration or a previous household repair does not establish competence for industrial work. Ask for relevant training, experience, insurance and comparable projects.

• Identify whether you need commercial-electrical, industrial-electrical, three-phase or machinery-controls expertise.
• Check specialist scope separately for fire alarms, emergency lighting, CCTV, networking and hazardous areas.
• Define whether inspection covers fixed wiring, machinery or appliances; one report does not automatically cover all three.

Agree how the site will operate

Give the contractor drawings, equipment information, known defects and planned changes. Agree the responsible site contact, shutdown windows and effects on staff, tenants, customers and security. The contractor and site duty holder should agree risk controls, isolation responsibilities and any permit arrangements.

• Include access equipment, restricted areas and coordination with other contractors in the price.
• Arrange a competent specialist to manage stored energy, machinery restart and control changes; these guides provide no operating or live-work instructions.

Specify usable handover records

Request test results, updated circuit or control drawings where relevant, defect priorities, operating information and maintenance recommendations. Appliance inspection and testing should reflect risk and use; do not assume every item needs an identical annual PAT schedule or that a PAT sticker proves the fixed installation safe.