Three-Phase Electrician in Bristol
Expert three-phase power installation and upgrades for commercial and industrial premises. NICEIC approved with extensive experience on complex power distribution projects.
Three-Phase Power Solutions
Three-phase power is the backbone of commercial and industrial electrical systems. It provides a more balanced, efficient, and powerful supply than single-phase, making it essential for premises running heavy machinery, large HVAC systems, commercial kitchens, server rooms, and high-demand equipment. MB Electrical provides complete three-phase installation and upgrade services across Bristol and the surrounding areas.
Whether you need a new three-phase supply installed from scratch, an upgrade from single-phase, or modifications to an existing three-phase system, we handle every aspect of the project. This includes site assessment, load calculations, DNO applications and liaison, cable routing and containment, distribution board installation, and final testing and certification.
Our experience spans factories, warehouses, workshops, commercial kitchens, data centres, and multi-unit developments. We work closely with the DNO and other trades to ensure your project is delivered on time and to the highest standards, with minimal disruption to your operations.
MB Electrical holds NICEIC Approved Contractor status — the highest tier of NICEIC accreditation. This requires regular assessment of competence across domestic, commercial, and industrial electrical work, ensuring that every project we deliver meets the highest professional standards.
Three-Phase Electrical Services in Bristol
Our Three-Phase Installation Process
Site Survey & Load Assessment
We visit your premises to assess the existing supply, calculate your power requirements, and determine the most effective approach for your three-phase installation.
DNO Application & Design
We prepare and submit the application to the Distribution Network Operator, design the distribution system, and plan the cable routes and containment.
Installation
Our team installs the three-phase supply, distribution boards, protective devices, and all associated wiring to BS 7671 standards. We coordinate with the DNO for the final connection.
Testing & Commissioning
Every circuit is thoroughly tested and commissioned. We verify load balancing, protective device operation, and earth fault loop impedance across all phases.
Certification & Handover
You receive full electrical installation certificates, test results, and documentation. We walk you through the system and provide ongoing support as needed.
Pricing Tailored to Your Project
Every three-phase project is different. We provide free, no-obligation quotes based on your power requirements, site conditions, and DNO connection needs.
Get a Free Quote"Michael was incredibly polite, friendly and trustworthy. He got the job done efficiently. I'd definitely contact him again!"
Dominic Lam
Google Review
Three-Phase Installation FAQs
Three-Phase Installations Across Bristol
We provide three-phase electrical installations and upgrades for commercial and industrial premises across Bristol and the surrounding areas. Select your area below to learn more.
Need Three-Phase Power?
Contact MB Electrical for a free site survey and quote for your three-phase installation in Bristol.

