HV Distribution & Switchgear
Design and installation of high-voltage distribution systems including substations, ring main units, transformers, and HV switchgear in full compliance with Electricity at Work Regulations and DNO requirements.
Power Infrastructure
What we provide
Complete Power Infrastructure Services
From HV substation design through to cable management and PV installation, we deliver the full electrical power package under one roof, eliminating coordination risks from multiple contractors.
LV Distribution & Switchgear
Full low-voltage distribution design including main switchboards, distribution boards, metering panels, and busbar systems for new-build, refurbishment, and upgrade projects.
Power Installation
General power installation across commercial and industrial sites including three-phase supplies, motor circuits, containment systems, and dedicated power for plant and equipment.
Cable Management
Specification and installation of cable management systems including trunking, tray, basket, and conduit designed to BS 7671 and coordinated with other building services.
PV Installation
Commercial photovoltaic design and installation including grid-tied systems, string and microinverter setups, generation metering, and G99 DNO applications to maximise savings.
Lightning Protection
BS EN 62305-compliant lightning protection systems including risk assessments, air termination networks, down conductors, earthing, and surge protection devices.
A Single Contractor for Your Entire Power Package
When your HV design, LV distribution, containment, and PV system all come from the same team, projects move faster, risks are reduced, and you get a single, clear point of accountability from tender to handover.
- Full in-house HV and LV design coordination
- Substation, switchgear, and cable route planning
- Integrated containment and power installation delivery
- PV system design, approvals, and commissioning
- O&M documentation and test certification provided
- NICEIC Approved - independently assessed
- CHAS Accredited - health and safety assured
What we provide
Why Choose NEC Electrical for Your Design & Build?
Choosing a partner who manages both technical design and physical installation gives your project a clear commercial advantage at every stage.
01
Single Team Delivery
From HV strategy to final commissioning, one coordinated team handles design and installation to reduce handover risk and keep delivery consistent.
02
Compliance from Day One
All systems are designed and installed to current standards, with documented testing, certification, and practical compliance support throughout the project.
03
Programme & Cost Control
Early design coordination and value engineering help avoid clashes, limit rework, and keep power infrastructure packages on programme and on budget.
04
Commercial-Scale Capability
We support industrial, commercial, and educational projects with scalable power solutions that remain reliable as operational demands grow.
Common questions
Frequently Asked Questions
Do you provide both HV and LV design as part of one package?
Yes. We deliver coordinated HV and LV design under one scope, including switchgear strategy, containment routes, metering, and commissioning requirements.
Can you deliver PV installations alongside core power infrastructure?
Absolutely. We integrate PV design and installation with the wider electrical package, including generation metering, network applications, and final commissioning.
How do you ensure power systems remain compliant and documented?
We complete full testing, inspection, and certification in line with applicable standards, then provide structured O&M documentation at handover for ongoing maintenance.
Do you support phased projects and live operational sites?
Yes. We regularly plan phased delivery for occupied or live environments, with clear sequencing and temporary supply considerations to minimise disruption.