Three-Phase Power Installations
Three-Phase Power Installations for Commercial & Industrial Premises Across Surrey, Hampshire & Berkshire
Many commercial and industrial premises rely on a three-phase power supply to safely operate machinery, manufacturing equipment, workshops, commercial kitchens and other high-demand electrical systems. If your business is expanding, installing new equipment or experiencing limitations with its existing electrical supply, a three-phase power installation could provide the additional capacity and reliability you need.
LS Electrical has over 30 years of experience delivering professional three-phase power installations for businesses across Surrey, Hampshire and Berkshire, helping companies future-proof their electrical infrastructure while supporting safe and efficient operations.
What Is a Three-Phase Power Installation?
A three-phase electrical supply distributes electricity across three live conductors instead of a single phase. This provides a more balanced and efficient power supply, making it ideal for commercial and industrial premises with higher electrical demands.
Compared with a standard single-phase supply, three-phase power can:
- Deliver greater electrical capacity
- Support larger machinery
- Reduce voltage drop
- Improve efficiency
- Provide smoother operation for motors
- Allow future business expansion
Three-phase installations are commonly found in factories, warehouses, workshops, commercial kitchens, offices and manufacturing facilities.
Does My Business Need Three-Phase Power?
Three-Phase Power Installations for Commercial & Industrial Premises Across Surrey, Hampshire & Berkshire
Typical reasons businesses upgrade include:
✔ Operating commercial catering equipment
✔ Installing manufacturing machinery
✔ Adding EV charging infrastructure
✔ Installing large air conditioning systems
✔ Running commercial lifts
✔ Increasing office power requirements
✔ Expanding production facilities
✔ Future-proofing business premises
If you’re unsure whether your premises require three-phase power, we can assess your electrical installation and advise on the most suitable solution.
Where Is Three-Phase Power Commonly Used?
Three-phase electrical systems are widely used across many commercial sectors.
Typical applications include:
Manufacturing Facilities
Supporting production machinery, CNC equipment, compressors and automated manufacturing lines.
Warehouses
Powering conveyor systems, warehouse lighting, loading equipment and distribution facilities.
Commercial Kitchens
Providing reliable power for ovens, extraction systems, refrigeration and catering equipment.
Workshops
Operating welders, lathes, compressors and other engineering machinery.
Offices
Supplying larger office buildings with air conditioning, server rooms and increased electrical demand.
Retail Premises
Supporting larger retail environments with HVAC systems, lighting and commercial equipment.
Different types of premises have different recommended inspection intervals depending on how the electrical installation is used and the level of risk involved.
Our Three-Phase Installation Services
Three-Phase Power Installations by
LS Electrical provides a comprehensive range of electrical services.
These include:
- Future expansion planning
- New three-phase power installations
- Three-phase power upgrades
- Distribution board installations
- Three-phase consumer units
- Machinery power supplies
- Industrial electrical installations
- Workshop electrical installations
- Factory electrical upgrades
- Isolator installations
- Cable installations
- Electrical testing and commissioning
A Commercial EICR helps ensure office electrical installations remain suitable for continued use while identifying issues before they result in unexpected downtime.
Three-Phase Distribution Boards
A properly designed three-phase distribution board forms the heart of any commercial electrical installation.
Distribution boards provide safe circuit protection while allowing electrical loads to be balanced across all three phases.
Where required, we can install new distribution boards or upgrade existing installations to accommodate increased electrical demand.
Upgrading from Single-Phase to Three-Phase Power
Many growing businesses eventually outgrow their existing electrical supply.
Upgrading to three-phase power typically involves:
- Assessing your current electrical installation
- Liaising with the Distribution Network Operator (DNO) where required
- Installing new distribution equipment
- Upgrading cabling
- Installing new protective devices
- Testing and commissioning the installation
Every project is different, and we’ll explain the process clearly before work begins.
Three-Phase Power for Industrial Machinery
Industrial machinery often requires a dedicated three-phase electrical supply to operate safely and efficiently.
We regularly install electrical supplies for:
- CNC machinery
- Production equipment
- Compressors
- Hydraulic equipment
- Packaging machinery
- Manufacturing lines
- Industrial pumps
- Mechanical plant
Correct installation helps maximise reliability while protecting valuable equipment
Three-Phase Distribution Boards
A properly designed three-phase distribution board forms the heart of any commercial electrical installation.
Distribution boards provide safe circuit protection while allowing electrical loads to be balanced across all three phases.
Where required, we can install new distribution boards or upgrade existing installations to accommodate increased electrical demand.
Safety & Compliance
All three-phase electrical installations should be designed and installed in accordance with the latest edition of BS 7671 Wiring Regulations.
Our installations include appropriate testing, inspection and certification to ensure the electrical installation is safe for operation.
Frequently Asked Questions
Three-phase power installations – what does it mean?
Three-phase power installations use three live conductors to distribute electricity more efficiently than a standard single-phase supply. It is commonly used in commercial and industrial premises with higher electrical demands.
How do I know if I need three-phase power?
If you’re installing machinery, commercial kitchens, EV charging, air conditioning or expanding your business, your existing electrical supply may no longer be sufficient. An assessment can determine whether upgrading to three-phase power is appropriate.
Can I upgrade from single-phase to three-phase power?
Yes. Many commercial premises can be upgraded, although the process may involve your Distribution Network Operator (DNO) as well as modifications to your electrical installation.
What equipment requires three-phase power?
Common examples include CNC machines, compressors, commercial catering equipment, industrial pumps, production lines, welders, HVAC systems and large motors.
Is three-phase power more efficient?
Yes. Three-phase systems distribute electrical loads more evenly, making them more efficient and suitable for powering larger equipment while reducing voltage fluctuations.
Do you install three-phase distribution boards?
Yes. LS Electrical installs and upgrades three-phase distribution boards for commercial and industrial premises as part of new installations and electrical upgrades.
Do you cover Surrey, Hampshire and Berkshire?
Yes. We provide professional three-phase power installations, upgrades and industrial electrical services throughout Surrey, Hampshire and Berkshire.
Got questions?
Feel free to reach out.