Commercial Electrical in Cardiff
Electrical installation and maintenance for shops, offices, and commercial premises.
From shop fits and office refurbishments to three-phase installations and periodic inspections, we provide a full commercial electrical service across Cardiff. We work around your business hours to minimise disruption and keep your operation running.
What's Included
- Commercial installation and fit-out
- Three-phase installation and maintenance
- Distribution board upgrades
- Emergency lighting and fire alarm systems
- Periodic inspection and testing (EICR)
- PAT testing
Why VoltDemo
We understand that downtime costs money. We plan commercial work to minimise disruption - that means out-of-hours work where needed, clear timelines, and no surprises on the invoice.
Common Questions
Can you work outside business hours?
Yes. We regularly carry out commercial work evenings and weekends to avoid disrupting your customers or staff.
Do you handle three-phase?
Yes. We install, maintain, and fault-find on three-phase systems for commercial and industrial premises.
Can you do PAT testing?
Yes. We offer PAT testing as a standalone service or combined with your periodic inspection. We'll provide certificates and labels for all tested appliances.
Other Services
Emergency Electrical
24/7 emergency call-outs for power failures, sparking outlets, and electrical faults.
From £95 →Full Rewiring
Complete house rewiring to current regulations. Older properties a speciality.
From £3,000 →Consumer Unit Upgrade
Modern consumer unit (fuse box) installation with RCD protection.
From £450 →