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Engineering

Engineering Overview

Engineering combines the engineering overview, generator planning, manual loads, load and demand, cable design, protection forecasting and project cable management without duplicating the Distro Editor schedule.

Updated August 20268 min read10 sections
advanced calculationsadvanced overviewBS 7909power factordiversitycable design

Availability

Engineering is optional. The tab appears only when Advanced Features are enabled for both the current workspace and the signed-in user.

The standard planning tabs remain unchanged. Equipment, quantities, output assignments and downstream distro connections continue to be managed only in the Distro Editor.

One project model

Engineering reads the live circuit structure from the Distro Editor. It stores calculation assumptions against those outputs rather than creating a second equipment schedule.

Engineering Overview

Engineering Overview is the first subtab and opens by default. It shows project warnings followed by an overview calculated using advanced load and demand values.

Warnings with editable advanced assumptions can be expanded using Review. Make changes in the expanded row and select Save changes to commit them. This prevents a warning disappearing while a value is only partly entered.

  • Review advanced warnings before issuing reports or cable calculations.
  • Expanded warning fields use a draft until Save changes is selected.
  • Changes saved from a warning are also reflected in Load & Demand.

Manual Loads

Manual Loads sits after Generators. It supports sign-off-only projects by accepting known output or phase loads without an equipment schedule. Choose equipment, manual, or combined loads and enter W, kW, VA, kVA or A with PF, diversity and notes.

See the Manual Loads article for circuit calculations, unallocated phase totals and G2 integration.

Load & Demand

Load & Demand is the calculation table for project power factor, circuit diversity, apparent load and calculated current. Equipment and connected load are read-only because they come from the Distro Editor.

Use this subtab to enter design assumptions, compare connected and design loads, and review totals by distro and phase.

Cable Design

Cable Design uses the design current from Load & Demand to calculate adjusted cable capacity, utilisation, section and cumulative voltage drop, and estimated end voltage.

Cable values can come from the shared global cable library or from project-specific custom data. Library values are copied into the project as a snapshot so an existing design remains traceable if the library is revised later.

Protection

Protection is a separate forecasting workspace for distro incomers, output protective devices, fault-current assumptions, device capability, indicative overload coordination and residual-current selectivity.

Protection stored in the referenced distro model is loaded automatically. Missing devices can be entered in the project, and suggested adjustable RCD settings can be accepted or replaced by a documented designer override.

Cable Library

Cable Library is the final Engineering subtab. It is an administration-style project view for controlling which cable ratings appear in Cable Design and for creating reusable custom records for the current project.

All active standard-library and project custom records are included by default. Inclusion choices and custom records are saved with the project and do not affect other projects.

Refreshing distro models

Use Refresh distro model to pull the latest outputs and built-in protection from the referenced workspace or project library model. The refresh retains project equipment assignments and advanced calculation settings wherever corresponding outputs remain available.

Refresh only when the project instance should adopt a revised library definition, and review every affected output afterwards.

Advanced PDF export

Export Engineering PDF opens a selection window for choosing Load & Demand, Cable Design and Protection sections and the distros to include. This produces a focused design pack without changing the live project.

Design responsibility

Advanced results are indicative design calculations. Cable selection, installation method, correction factors, protective devices, earthing arrangement and site conditions must be checked by a competent designer.

Designer verification records that the displayed cable data and installation assumptions have been reviewed; it is not an electrical completion certificate or a substitute for inspection and testing.

Competent verification required

Do not treat a Pass status as proof that an installed system complies with BS 7909, BS 7671 or site-specific requirements.

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