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Project Design rectangular luminaire Revit family, lighting fixture
Instructions

ELE_Generator_Rehlko D330 (M237)

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2026-09-10 No Comments
How To

How to size cable tray

A tray can pass on width and still be wrong. Table 4C1 gives four different grouping factors for four different arrangements of the same six circuits; the fault force on the cleats is set by the current at the tray and its peak factor, not the device rating; and every run on a multi-service bracket lands on the same two rods. The four checks to BS 7671:2018+A4:2026, BS EN 61914 and BS 8519:2020, worked.

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2026-08-12 No Comments

Adoptable asset

An adoptable asset is electrical distribution network infrastructure built to a DNO or IDNO specification and transferred into the operator’s ownership and maintenance.

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2026-07-15 No Comments
Revit project template dashboard sheet with notice board, project details, model health dashboard and revision table
Instructions

Project Template_RVT_2025

Revit Electrical Project Template 2025 v25.2.2 Template For: Electrical Engineers, Bim Managers, Electrical Designers Setup: Typically 2–4 hours — quicker for experienced users. View Details Technical Details Released: Jul 12,

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2026-07-12 No Comments
Automatic transfer switch panel with double line bypass, a two door enclosure with rotary switches and a controller
How To

ATS

Automatic Transfer Switch (ATS) In a Higher-Risk or life-safety building, the firefighting and smoke-control plant is only as resilient as the device that switches it onto standby power. The automatic

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2026-06-19 No Comments
BS 8519 scope — standard reference extract
Blog

BS8519 awareness of the changes

An email debate on whether BS 8519’s “dedicated cable support” rules really apply to central battery emergency lighting. We unpack the scope of BS 8519 vs BS 5266-1 and BS 7671, and what that means for segregation, containment and life-safety wiring on real projects.

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2025-11-14 No Comments
Graphic headed Domestic PV sizing rule-of-thumb, RoT, with solar panel, thumbs up, battery and inverter icons
How To

Domestic PV sizing rule-of-thumb (RoT)

Domestic PV sizing rule-of-thumb (RoT) Grid-tied, focused on self-consumption UK rule-of-thumb (RoT) Peak Sun Hours (PSH): 3.5 summer, 2.0 spring/autumn, 1.0 winter For calc use Peak Sun Hours (PSH) =

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2025-09-25 No Comments
Revit project template dashboard sheet with notice board, project details, model health dashboard and revision table
Instructions

Project Template_RVT_2024

Revit Electrical Project Template 2024 v24.2.2 Template For: Electrical Engineers, Bim Managers, Electrical Designers Setup: Typically 2–4 hours — quicker for experienced users. View Details Technical Details Released: Jul 24,

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2025-07-24 4 Comments
mimic panel
How To

Mimic Panels for Life-Safety Generators

Mimic Panels for Life-Safety Generators – UK-Specific Designer’s Guide Key takeaway: Indicator for generators and smoke-control systems (commonly referred to as ‘mimic panel’, often marked “ESP – Emergency Stand-by Power

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2025-07-19 No Comments
Flowchart choosing the earthing system: TN-C-S PME, TN-C-S variant PNB, TN-S and TT, each with a typical Ze value
How To

UK Earthing & Bonding Design Reference

UK Earthing & Bonding Design Reference (Edition 2025 – aligned with BS 7671:2018+A2:2022, Amendment 3 (2024), and draft Amendment 4 (2026), also drawing from official UK Power Networks standards) Scope,

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2025-07-11 2 Comments
Document naming strategy page with Table 1, the information container identifier fields from project number to title
Instructions

Document Naming Strategy

DOCUMENT NAMING STRATEGY All information in the PD Revit Template follows PROJECT DESIGN (IO) standards. the For one-page drawing naming strategy, please refer to free download E-5161 OnePage Naming Strategy

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2025-07-11 No Comments
Infographic Level of Information Need, getting your BIM data just right, covering what it is and why it matters
Blog

Level of information need

Ever feel like you’re drowning in BIM data you don’t need, or scrambling for details that should’ve been there? Enter the concept of Level of Information Need. It’s a straightforward idea buried behind a not-so-straightforward name (looking at you, BS EN ISO 7817-1:2024). In plain English, a Level of Information Need defines exactly what information should be delivered – no more, no less – for a given BIM use case or project stage.

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2025-06-29 No Comments
Sepia archive photo of a crowd in suits and hats at the plaque unveiling at the site of the Pearl Street Station
Blog

Thomas Edison’s Pearl Street Station

Dynamos, Boilers, and the Costly Copper of Edison’s 1882 Pearl Street Station On September 4, 1882, Thomas Edison’s Pearl Street Station in New York City became the world’s first commercial

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2025-06-07 No Comments
CPR cable Euroclass classification
How To

CPR Cable Classification Guide

Since July 2017, all power, control and communication cables permanently installed in buildings must comply with the Construction Products Regulation (CPR).
This guide is your reference for navigating Euroclass ratings, selecting compliant products.

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2025-06-04 No Comments
Revit project template dashboard sheet with notice board, project details, model health dashboard and revision table
Instructions

Project Template_RVT_2022

Revit Electrical Project Template 2022 v22.2.1 Template For: Electrical Engineers, Bim Managers, Electrical Designers Setup: Typically 2–4 hours — quicker for experienced users. View Details Technical Details Released: Apr 29,

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2025-05-25 No Comments
Step 3 installation drawing of the ARR906U AFDD being fitted beside a circuit breaker on a DIN rail and busbar
How To

Arc Fault Detection Devices (AFDDs) 

Arc Fault Detection Devices (AFDDs) in the UK: Technical Requirements and Implementation Executive Summary Arc Fault Detection Devices (AFDDs) represent a significant advancement in electrical fire safety. This whitepaper provides

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2025-05-23 No Comments
Cross-sectional view of a residential building’s fire core, showing protected stairwells, lift shafts, fire-rated partitions, and service risers enclosed within fire-resistant construction, designed to maintain vertical compartmentation and safe evacuation routes during a fire.
How To

Secondary Supply – diverse cable route

This guidance covers the routing of secondary supply cables from a life safety generator to the ATS (Automatic Transfer Switch), and the final equipment with reference to:

BS 7671:2018+A2:2022, specifically Section 560: Safety Services

BS 8519:2020, with emphasis on Clause 7 (Cable Routing) and Clause 11 (Cable Selection)

The goal: clarify requirements for the diverse cable routing and maintain circuit integrity under fire conditions for systems that support life safety and fire-fighting applications, such as sprinkler pumps, fire-fighting lifts, and smoke control systems.

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2025-05-05 No Comments
electric vehicle charging point
How To

Electric Vehicle Charging Points

Active charging points are fully wired and connected, ready-to-use charging points.
A passive charging point, on the other hand, is the infrastructure without the final charging unit installed.

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2025-04-09 No Comments
HVO fuel
How To

HVO Fuel

Hydrotreated Vegetable Oil (HVO) is a renewable, diesel-type fuel made from vegetable oils and fats instead of crude oil​.

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2025-04-02 No Comments
Open grey junction box with rows of blue, green and orange terminal blocks
Dictionary

Junction Boxes

Junction Box Requirements in Electrical Installations To ensure compliance with BS 7671:2018+A2:2022, the following requirements apply when using junction boxes in electrical installations: 1. Compliance with BS EN 60670-22 Any

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2025-03-15 No Comments
Life safety generator installed for emergency power backup in a residential building, ensuring uninterrupted operation of critical systems during outages
How To

Life Safety Generator

Life Safety Generator selection guide On a recent London office refurbishment, with a steady running load of 353 kVA, our load profile showed a life safety generator of 800 kVA

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2025-02-27 No Comments
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