Commercial Capability Statement & Service Portfolio

1. Executive Summary & Corporate Overview

1.1 Executive Statement

Founded in 2006, RMES Electrical Limited (trading as McMillan Electrical) brings over two decades of hands-on industry expertise, technical rigor, and commercial reliability to every project undertaken. Operating primarily across Sussex, Surrey, Kent, and the wider South East, McMillan Electrical has established itself as a trusted partner for commercial entities, educational institutions, facility management firms, and private sector enterprises seeking high-specification electrical installations, rigorous testing, and proactive maintenance services.

In a commercial landscape defined by rapid technological change, evolving safety regulations, and an increasing push toward net-zero infrastructure, McMillan Electrical serves as a benchmark for quality, safety, and compliance. Built on a foundation of craftsmanship, engineering discipline, and transparency, the company specializes in delivering electrical works spanning small-to-medium enterprise (SME) refurbishments through to substantial commercial installations.

Every project managed by McMillan Electrical is executed under strict adherence to national safety frameworks and technical guidelines. The firm’s long-standing industry presence is backed by comprehensive public liability and professional indemnity cover, ensuring that commercial partners, main contractors, and property managers receive absolute risk mitigation and operational continuity throughout the lifecycle of their assets.

1.2 Core Capabilities at a Glance

• Technical Compliance: NICEIC Approved Contractor, Part P Registered, BS 7671:2018+A4:2026 Compliant, SafeContractor Standards.
• Commercial Workstreams: Commercial Refurbishments, Educational Grants & School Projects, OZEV EV Charging Systems, Industrial Inspection & Testing.

1.3 Core Values and Operating Philosophy

The operational philosophy at McMillan Electrical rests on three core pillars: Technical Precision, Regulatory Compliance, and Client-Centric Transparency.

• Technical Precision: Electrical systems are the critical backbone of modern commercial operations. Substandard installations lead to operational downtime, energy inefficiency, and severe life-safety hazards. McMillan Electrical mandates meticulous workmanship on every job, from three-phase industrial distribution boards down to sub-circuit wiring and localized isolation switches.
• Regulatory Compliance: Navigating the complex regulatory landscape of UK building codes and electrical standards requires dedicated oversight. McMillan Electrical maintains active accreditations, ensuring all design, installation, and verification work strictly aligns with the latest wiring regulations and legal safety directives.
• Client-Centric Transparency: Commercial projects require strict oversight, clear scheduling, and minimal disruption to ongoing business operations. McMillan Electrical operates with transparent scope documentation and structured project milestones, ensuring facility managers and project leads maintain complete visibility from initial site survey to final certification.

2. Accreditations, Governance, and Regulatory Standards

2.1 NICEIC Approved Contractor Status

McMillan Electrical holds full NICEIC Approved Contractor status, representing the highest tier of assessment within the UK electrical industry. This accreditation is a continuously audited quality assurance framework that covers all aspects of commercial and industrial electrical work.

Key Areas of NICEIC Assessment:

• Workmanship and quality standards inspection
• Accuracy and calibration of test equipment
• Competency of qualified supervising personnel
• Completeness and accuracy of EIC, EICR, and Minor Works certification
• Strict adherence to current Health & Safety legislation

As an Approved Contractor, McMillan Electrical is authorized to undertake self-certification under local building regulations, issue formal Electrical Installation Certificates (EIC), compile comprehensive Electrical Installation Condition Reports (EICRs), and perform critical statutory inspections across complex commercial environments. This status gives commercial clients, local authorities, and insurers total confidence that installed systems meet rigorous national safety standards.

2.2 Part P Building Regulations Compliance

While Part P of the Building Regulations specifically governs electrical safety in and around domestic dwellings, its implications extend directly into commercial environments—particularly mixed-use developments, residential care facilities, educational staff accommodations, and commercial properties co-located within residential zones.

McMillan Electrical’s full registration under the Part P scheme ensures that all relevant works—ranging from full re-wires and consumer unit upgrades to new circuit additions—are formally notified to Building Control without necessitating third-party sign-offs or causing administrative delays for property owners.

2.3 BS 7671:2018+A4:2026 Wiring Regulations

All electrical design, installation, inspection, and testing carried out by McMillan Electrical strictly conforms to BS 7671:2018+A4:2026 (Requirements for Electrical Installations - IET Wiring Regulations). Technical delivery reflects the latest statutory mandates, including:

• Surge Protection Devices (SPDs): Mandatory integration of transient overvoltage protection in commercial distribution systems to safeguard expensive electronic machinery, IT infrastructure, and automated control equipment.
• Arc Fault Detection Devices (AFDDs): Deployment of advanced micro-circuit protection designed to mitigate fire risks caused by high-resistance arc faults in high-risk environments, such as schools, timber-framed structures, and densely populated commercial units.
• Residual Current Devices (RCDs) & RCBOs: Utilization of residual current protection capable of responding to complex DC components present in modern electronic drivers, variable speed drives, and EV charging units.
• Thermal Considerations & Cable Sizing: Strict application of de-rating factors, containment design, and voltage drop limits to prevent thermal degradation and optimize energy efficiency within commercial power networks.

3. Commercial & Industrial Capability Portfolio

McMillan Electrical delivers a broad range of high-specification electrical services tailored specifically for business premises, industrial units, educational facilities, and managed property portfolios. Services are engineered to satisfy both operational requirements and statutory compliance.

Service Overview Table

Service Category	Core Capabilities & Offerings
Power Distribution	• 3-Phase Main Switchgear & Panel Board Installation • Sub-Distribution Boards & Busbar Trunking Systems • Industrial Commando Socket Networks & Plant Supplies
Commercial Lighting	• High-Efficiency LED Conversions & Architectural Retrofits • Emergency Lighting (BS 5266-1) Escapes & Standby Systems • Intelligent DALI & Motion-Controlled Lighting Systems
Specialized Infrastructure	• Commercial EV Chargers & OZEV Workplace Grant Implementations • Data Cabling (Cat6/Cat6a) & Server Room Power Supplies • Dedicated HVAC & Environmental Control Power Feeds
Inspection & Testing	• Commercial EICRs & Fixed Wire Periodic Testing • Thermal Imaging & Diagnostic Fault Finding

3.1 Commercial Power Distribution & Control Systems

Modern commercial facilities require clean, stable, and highly resilient power distribution networks. McMillan Electrical specializes in the design, installation, and modification of single-phase and three-phase electrical supplies capable of supporting heavy machinery, computing infrastructure, and commercial plant equipment.

• Main Switchgear & Sub-Distribution: Upgrades and replacements of obsolete panel boards, busbar trunking systems, and multi-way distribution boards with modern, IP-rated, fully isolated switchgear.
• Commercial Containment Systems: Installation of heavy-duty galvanized steel conduit, cable tray, basket systems, and multi-compartment dado trunking designed to accommodate high-density wiring safely and aesthetically.
• Industrial Power Supplies: Direct-wiring, hardwired isolators, and high-amperage industrial socket outlets (IP44/IP67 Commando sockets) for manufacturing equipment, commercial kitchens, workshops, and plant rooms.

3.2 High-Efficiency Commercial Lighting & Controls

Lighting accounts for a substantial portion of commercial energy usage. McMillan Electrical provides comprehensive commercial lighting services designed to reduce operational overheads, improve workplace illumination, and satisfy emergency safety requirements.

Lighting Capabilities:

1. Architectural & High-Bay LED Systems: High-output, low-glare luminaires optimized for office grids, retail spaces, and warehouse ceilings.
2. Emergency Lighting Systems (BS 5266-1 Compliant): Maintained and non-maintained luminaires, central battery systems, self-test units, and illumination for escape routes and high-risk task areas.
3. Intelligent Lighting Control Systems: DALI (Digital Addressable Lighting Interface) integration, PIR and microwave occupancy sensors, daylight harvesting, and automated dimming.

• LED Retrofits & Upgrades: Transitioning traditional fluorescent, halogen, and metal-halide fixtures to modern LED systems, delivering substantial reductions in lighting energy consumption and drastically reducing ongoing maintenance requirements.
• Emergency Lighting Systems (BS 5266-1): Full design, installation, and mandatory testing of emergency escape lighting, standby lighting, and illuminated safety signage. Systems are engineered to provide automatic illumination in the event of a mains failure, ensuring safe evacuation.
• Smart Lighting Controls: Implementation of DALI networks, presence/absence sensors, and daylight-harvesting controls to minimize energy wastage in unoccupied spaces.

3.3 Electrical Inspection, Testing, and Statutory Compliance

Maintaining compliance with the Electricity at Work Regulations 1989 is a mandatory legal obligation for every employer, commercial landlord, and property manager. McMillan Electrical offers comprehensive inspection and testing services to verify system safety, document compliance, and identify latent defects before they result in equipment failure or safety breaches.

• Electrical Installation Condition Reports (EICRs): Detailed periodic inspection and testing of fixed wiring systems in commercial, industrial, and educational properties. Testing includes insulation resistance, earth fault loop impedance, prospective fault current, and RCD trip times.
• Remedial Works & Defect Rectification: Rapid, prioritized resolution of C1 (Danger Present), C2 (Potentially Dangerous), and FI (Further Investigation) non-compliances identified during EICR testing to restore safety compliance quickly.
• Portable Appliance Testing (PAT): Scheduled safety testing of plug-in appliances, tools, and office equipment to maintain complete workplace safety registers.

4. Electric Vehicle Infrastructure & Clean Energy Integration

As commercial fleets and employees transition toward electric transport, businesses must deploy scalable, reliable, and intelligent charging points. McMillan Electrical provides turn-key commercial Electric Vehicle Supply Equipment (EVSE) solutions, helping organizations capitalize on government grant incentives while building future-proof transport infrastructure.

EV Infrastructure Deployment Roadmap

1. Site & Load Survey: Assessment of available electrical capacity, grid connection size, earthing arrangements, and operational demand.
2. Infrastructure Design: Selection of fast chargers, cable containment routes, circuit protection, and Dynamic Load Management (DLM) integration.
3. OZEV Grant Processing: Submitting and managing Workplace Charging Scheme (WCS) applications to support commercial and educational installations.
4. Installation & Commissioning: Physical mounting, PEN fault protection, groundworks, software connectivity setup, and full Electrical Installation Certification.

4.1 OZEV Workplace Charging Scheme (WCS)

McMillan Electrical is experienced in navigating and implementing the UK Government’s Office for Zero Emission Vehicles (OZEV) grant schemes. Through the Workplace Charging Scheme (WCS), eligible businesses, charities, and public sector organizations (including schools and educational trusts) can access funding support to reduce the capital cost of EV charger installations.

• Grant Scheme: Subsidies available per socket toward the purchase and installation costs of eligible EV charge points across multiple sockets.
• Educational Institutions: Specific funding pathways tailored for schools and academies to support sustainability goals and staff charging infrastructure.

4.2 Dynamic Load Management & Power Balancing

A primary challenge when installing multi-socket commercial EV chargers is avoiding exceeding the building's maximum available electrical capacity. McMillan Electrical integrates Dynamic Load Management (DLM) systems that monitor real-time power consumption across the facility.

When building power usage surges (e.g., HVAC systems or catering equipment running at full capacity), the DLM automatically adjusts power delivery to connected vehicles, preventing main supply fuses from tripping while maximizing charging speed during off-peak windows.

5. Health, Safety, Risk Management, and Quality Assurance

Safety is integral to every installation delivered by McMillan Electrical. Working within energized environments, high-voltage commercial distributions, and public-facing facilities demands strict health and safety protocols.

Health, Safety & Quality Standards

• SafeContractor standard operating procedures
• Site-specific Risk Assessment & Method Statements (RAMS)
• Personal Protective Equipment (PPE) & Safe Isolation protocols
• Calibrated test equipment logs and maintenance records
• Comprehensive post-installation certification (EIC / EICR)

5.1 SafeContractor Principles & RAMS

McMillan Electrical operates according to rigorous safety management standards aligned with recognized schemes such as SafeContractor. Before any physical work begins on a commercial site, a comprehensive risk assessment and method statement (RAMS) is developed.

• Risk Assessments: Identification of site-specific hazards, including working at height, working in confined spaces, energized circuits, manual handling, and public interface risks. Safe control measures and residual risk ratings are documented prior to site mobilization.
• Method Statements: Step-by-step procedural guides detailing the exact sequence of works, required equipment, safe isolation procedures, and emergency response plans.

5.2 Safe Isolation Protocols

In accordance with the Electricity at Work Regulations 1989 and Health and Safety Executive (HSE) guidance note GS38, McMillan Electrical enforces strict Safe Isolation Procedures:

1. Notification: Inform site management and operational staff of planned supply interruptions.
2. Identification: Locate and verify the correct isolation point for the target circuit.
3. Isolation: Switch off and lock out the isolation device using approved lockout/tagout (LOTO) hardware.
4. Verification: Test the voltage indicator on a known live source, verify the isolated circuit is dead across all conductors (Phase, Neutral, Earth), and re-test the voltage indicator against the known live source.
5. Secure Work Area: Post warning notices and maintain secure access controls until works are complete and tested.

6. Commercial Case Studies & Contract Scenarios

The following scenarios highlight McMillan Electrical’s technical capability, project management approach, and delivery standards across typical commercial projects.

6.1 Scenario 1: Multi-Socket EV Infrastructure at Educational Facility

• Project Scope: Installation of a multi-socket commercial EV charging network at a private educational campus in Sussex, including supply infrastructure, dynamic load balancing, and civil groundworks.
• Project Context: Execution utilizing OZEV Workplace Charging Scheme grant funding.
• Technical Execution:

• Conducted detailed demand and load monitoring across the main site intake panel.
• Installed a dedicated 3-phase sub-distribution board equipped with Type C RCD protection and integrated surge protection (SPD).
• Laid armored cable (SWA) via underground ducting, installing heavy-duty stainless steel charging pedestals.
• Configured Dynamic Load Management software to ensure charging rates adjust automatically relative to school kitchen and plant machinery loads.

• Result: Completed within school holiday periods, avoiding disruption to educational operations, and fully certified with NICEIC documentation.

6.2 Scenario 2: Commercial Office Refurbishment & Energy Upgrade

• Project Scope: Electrical infrastructure upgrade and energy-efficient lighting overhaul for a multi-story corporate office building undergoing internal layout modernization.
• Technical Execution:

• Replaced an obsolete distribution board with a modern split-load 3-phase panel featuring individual RCBO protection on all final sub-circuits.
• Designed and installed a high-efficiency LED ceiling panel grid controlled via DALI sensors, providing presence detection and daylight harvesting.
• Reconfigured power networks across desk locations using underfloor busbar trunking and floor-box socket assemblies.

• Result: Delivered a significant reduction in lighting energy consumption, improved workplace lighting quality, and provided clean, surge-protected power feeds for company servers and workstation infrastructure.

6.3 Scenario 3: Industrial Unit EICR & Comprehensive Remedial Package

• Project Scope: Complete statutory electrical testing, condition reporting, and urgent defect remediation for a light manufacturing and warehousing facility.
• Technical Execution:

• Performed comprehensive inspection and testing across all fixed wiring, distribution panels, and high-level industrial lighting circuits.
• Identified critical C1/C2 non-compliances, including undersized earth conductors and unsealed high-voltage distribution boxes.
• Executed emergency remedial repairs out of normal operational hours to minimize factory downtime.
• Upgraded emergency lighting units to meet BS 5266 standards across the main warehouse floor and escape routes.

• Result: Successfully issued a Satisfactory Electrical Installation Condition Report (EICR), allowing the tenant to satisfy corporate insurance requirements and health and safety mandates.

7. Operational Methodology & Project Delivery Framework

To ensure that every project—regardless of size or complexity—is delivered on time and in total compliance with engineering standards, McMillan Electrical follows a structured 5-Stage Delivery Framework.

Stage 1: Consultation & Technical Site Survey

Every commercial engagement begins with a rigorous site survey. Rather than relying on assumptions, qualified engineers assess:

• Existing electrical supply capacity (Cut-out rating, transformer size, earthing arrangements: TN-S, TN-C-S, TT).
• Physical routing options for cable containment, structural penetration requirements, and potential environmental hazards (e.g., thermal insulation, ambient temperatures).
• Client operational schedules to identify optimal working windows (including out-of-hours or weekend execution if required).

Stage 2: Design & Engineering

Utilizing precise electrical engineering standards in accordance with BS 7671:2018+A4:2026, cable selection is optimized to handle design current, nominal ratings of protective devices, and thermal capacity. Voltage drop constraints are evaluated to ensure end-of-line equipment operates within safe tolerance bands.

Proposals are issued with detailed breakdowns, explicit component specifications, and clear project completion timetables.

Stage 3: RAMS & Pre-Mobilization Planning

Before site setup, all health and safety documentation is compiled and submitted to site management. Material procurement schedules are aligned with project milestones to ensure uninterrupted workflow upon arrival.

Stage 4: Site Installation & Project Management

Installation work is conducted by qualified, highly trained electricians working under strict supervisory oversight. Cable containment, switchgear installation, and sub-circuit wiring are executed neatly, securely, and in strict compliance with approved design drawings.

Stage 5: Testing, Commissioning & Handover

Following physical completion, systematic verification is conducted:

• Dead Testing: Continuity of protective conductors, continuity of ring final circuit conductors, and insulation resistance testing.
• Live Testing: Earth fault loop impedance, prospective fault current testing, and functional testing of RCDs, switchgear, and control systems.
• Handover Documentation: Formal issuing of NICEIC Electrical Installation Certificates (EIC), test schedules, manufacturer warranties, and Operation & Maintenance (O&M) manuals.

8. Summary of Services & Engagement Model

McMillan Electrical offers commercial entities a reliable, highly technical, and fully compliant partnership for all electrical installation, upgrade, and maintenance needs.

Pillar	Focus Areas
Commercial Contracting	• Complete end-to-end project management and installation • Commercial switchgear, distribution, and infrastructure upgrades
Statutory Compliance	• Commercial EICR periodic inspection reports & remedial works • PAT testing & fixed wire maintenance programs
Sustainable Technology	• OZEV-approved commercial EV charging infrastructure • Smart LED lighting installations & energy management controls
Industry Accreditation	• NICEIC Approved Contractor • Part P Registered & BS 7671:2018+A4:2026 Compliant

Commercial Contact &

Engagement

For detailed project tenders, commercial site surveys, or grant funding consultations, RMES Electrical Limited (t/a McMillan Electrical) provides dedicated engineering consultation tailored to your facility's exact operational requirements.