Cable Design Services
Correct cable sizing is critical for safe, reliable, and cost-effective power systems. Undersized cables create thermal hazards and voltage drop issues; oversized cables waste capital. Our cable studies ensure your installation is optimally designed from the outset.
We provide cable sizing and thermal analysis for a wide range of applications including grid connection cables, inter-array cables for solar farms, wind farm collector systems, and industrial power distribution. All calculations are performed to IEC 60287 and relevant UK standards.
For complex routes with varying installation conditions, our analysis considers all thermal constraints including burial depth changes, crossing points, cable groupings, and soil thermal resistivity to ensure the cable operates within its thermal limits throughout.
Powered by EasyCableSizing
Our cable studies are supported by EasyCableSizing, our proprietary cable sizing software. Developed in-house specifically for power cable design, it implements IEC 60287 calculations with an intuitive interface.
EasyCableSizing enables faster turnaround and greater accuracy than traditional spreadsheet methods, with full calculation transparency so you can verify every step.
Try EasyCableSizingCable Study Services
Cable Sizing Studies
Current carrying capacity calculations per IEC 60287 for HV and LV cable systems. Includes thermal analysis for direct buried, ducted, and trefoil installations.
Cable Route Thermal Analysis
Detailed thermal assessment for cable routes with varying burial depths, soil conditions, and grouping arrangements. Critical for long cable runs with changing conditions.
Cable Pulling Calculations
Maximum pulling tension and sidewall pressure analysis to ensure cables can be safely installed without damage. Includes route analysis for bends and straight sections.
Earthing Cable Design
Earth conductor sizing for fault current capacity including adiabatic calculations. Covers both copper and aluminium conductors for HV and LV systems.
Cable Loss Calculations
Power loss assessment for cable systems including I²R losses and sheath losses. Important for efficiency calculations and cooling requirements.
Cable Schedule Development
Complete cable schedules with specifications, ratings, and installation requirements for project documentation and procurement.
Common Applications
Grid Connection Cables
HV cables from generation sites to point of connection. Includes 11kV, 33kV, 66kV, and 132kV systems. Often the critical thermal constraint for project capacity.
Solar Inter-Array Cables
LV and MV collector cables within solar farms. Must balance cable cost against losses and voltage drop to optimise overall system economics.
Substation Cabling
HV and LV cables within customer substations including transformer connections and switchgear feeds.
Industrial Distribution
Power cables for industrial sites including substations, motor feeds, and distribution networks. May include cable tray installations and grouping analysis.
Standards & References
Our cable calculations reference the following standards and guidelines.
Frequently Asked Questions
What standards do you use for cable sizing?
We primarily use IEC 60287 for current rating calculations, which is the internationally recognised standard. For UK installations we also reference BS 7671, ENA Engineering Standards, and ERA reports as appropriate.
Can you assess existing cable systems?
Yes. We can verify the capacity of installed cables for new load conditions, assess uprating possibilities, and identify constraints. This is common for site upgrades or when connecting additional generation.
What is EasyCableSizing?
EasyCableSizing is our proprietary cable sizing software developed specifically for power cable design. It implements IEC 60287 calculations with an intuitive interface, enabling faster and more accurate cable sizing than traditional methods. It's available at easycablesizing.com.
Do you provide cable pulling calculations?
Yes. We calculate maximum pulling tensions and sidewall pressures to verify cables can be safely installed on the proposed route. This includes analysis of bend radii, straight pull lengths, and lubrication requirements.
Need Cable Sizing Support?
Send us your cable route details and load requirements. We'll provide a scope and quote for your study.