Design services
Independent electrical design and calculation support for electrical contractors who need additional technical capability, without the overhead of a full-time in-house designer.
Cable sizing & selection
LV submains and final circuits sized against installation method, grouping and correction factors, with cable selection suited to the circuit and route.
Voltage drop
Circuit-level and overall installation voltage-drop verification, checked against the limits set for the installation.
Fault current & ADS
Prospective fault-current calculations and automatic disconnection of supply verification for the protective devices in use.
Protective devices
Device selection and verification against circuit requirements, ratings and discrimination where relevant.
Maximum demand
Connected-load assessment, diversity and maximum-demand calculations to size supplies and distribution equipment correctly.
Discrimination / selectivity
Protective-device coordination assessments where discrimination between upstream and downstream devices is required.
ProDesign packages
Controlled Trimble ProDesign calculations and supporting documentation, issued as part of a managed design package.
Small packages are welcome — from a single cable calculation to a small LV distribution package.
Support can include technical submissions, design-and-build work, busy-period overflow and occasional formal calculation requirements — scaled to what the project needs.
Controlled workflow
Every calculation package moves through the same controlled process, from design input to issued output.
Design Inputs
Drawings, loads and site constraints received and logged.
Engineering Calculations
Cable sizing, voltage drop, fault current and device selection.
Technical Review
Outputs checked against BS 7671 and the design brief.
QA
Independent quality check before release.
Controlled Issue
Documentation issued under a referenced revision.
Discuss your next calculation package
info@electrafix.co.uk · www.electrafix.co.uk