EST. 2013 • SCOTLAND UK • CO. SC447561 ℹ Technical guidance conforming to BS 7671 (IET Wiring Regulations 18th Edition).
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TES ENGINEERING

Engineering Materials & Component Monographs

Detailed technical evaluations of conductor metals, insulation polymers, circuit protection technologies, and mechanical ducting substrates used across UK building services.

Electrolytic Copper Busbar Conductor Metallurgy
BS EN 13601 • CW004A Grade

High-Conductivity Electrolytic Tough Pitch (ETP) Copper

Featuring 99.90% minimum copper content and an electrical conductivity exceeding 100% IACS. Standard selection for low-voltage switchboard busbar chambers, offering outstanding current-carrying capacity and high short-circuit thermal tolerance.

Armoured Cabling Components Cable Insulation
BS 6724 / BS 5467 • XLPE / LSZH

Cross-Linked Polyethylene (XLPE) Steel Wire Armoured Cables

Operating at a maximum continuous conductor temperature of 90°C with a short-circuit limit of 250°C. Wrapped in galvanized steel wire armour (SWA) for heavy mechanical protection in underground and industrial tray installations.

Circuit Protection Devices Circuit Protection
BS EN 62423 • Type B / Type A RCD

Type B Residual Current Protective Devices

Designed to detect sinusoidal AC residual currents, pulsating DC currents, and smooth direct DC residual currents up to 1 kHz. Mandatory for variable frequency drives, medical diagnostic equipment, and DC fast EV charging installations.

Moulded Case Circuit Breakers Switchgear Components
BS EN 60947-2 • MCCB Technology

Moulded Case Circuit Breakers with Electronic Trip Units

Advanced microprocessor-based trip units providing adjustable LSI (Long time, Short time, Instantaneous) settings and integrated ground-fault protection for precise downstream discrimination in commercial sub-distribution.

Harmonic Filter Assemblies Power Quality
ENA G5/5 • Active Shunt Filter

IGBT Active Harmonic Filters

Insulated Gate Bipolar Transistor (IGBT) technology injecting compensating current harmonics 180° out-of-phase in real-time, eliminating harmonic resonance risks and correcting low displacement power factor dynamically.

Mechanical Plant Room Mechanical Substrates
DW/144 Standard • Galvanized Steel

Hot-Dip Galvanized Sheet Steel Ductwork (Z275 Coating)

Manufactured in compliance with BESA DW/144 for commercial ventilation and air distribution. Evaluated for Class C airtightness, mechanical deflection under static pressure, and antimicrobial coating compatibility.