Cable Calcs and Cable Calculations.
Use Adelphos Cable Calcs to prepare and review cable calculations, understand the required circuit inputs and move between the free cable sizing calculator and a guided calculation in Chat.
How do Adelphos Cable Calcs work?
Use Adelphos Cable Calcs to prepare and review cable calculations, understand the required circuit inputs and move between the free cable sizing calculator and a guided calculation in Chat.
What it does
Use Adelphos Cable Calcs to prepare and review cable calculations, understand the required circuit inputs and move between the free cable sizing calculator and a guided calculation in Chat.
Inputs you provide
Provide the circuit design current, supply arrangement, cable route, length, installation method, conductor material, correction factors, protective device, earthing information and CPC details supported by the project records.
Output you receive
Adelphos returns a structured cable calculation record with current-carrying capacity, voltage-drop, earth-fault-loop, disconnection-time and CPC checks for competent review; the free cable sizing calculator remains available without signing in.
Limits and responsibility
Cable Calcs supports engineering review but does not replace the designer, competent-person verification or the current requirements of BS 7671. It does not recommend a manufacturer or catalogue product.
How to complete cable calcs and cable sizing checks.
A cable calculation starts with the real circuit duty and installation conditions. The proposed size is then checked for current capacity, voltage drop and fault protection before a competent person accepts it.
1. Establish the cable design current
Confirm the connected load, diversity, power factor, phases and supply voltage. Record the protective device and any starting-current or harmonic considerations supported by the design.
2. Define the cable route and installation method
Record route length, conductor material, insulation, ambient conditions, grouping, thermal insulation and the applicable reference installation method. These conditions affect the required tabulated capacity.
3. Check cable size and voltage drop
Compare the design current with the corrected current-carrying capacity, then calculate voltage drop over the declared route. Review the result within the complete installation rather than as an isolated number.
4. Check earth fault and CPC performance
Use the external loop impedance, conductor resistance, protective device and CPC information to review earth-fault-loop impedance, disconnection time and adiabatic performance against the applicable BS 7671 requirements.
Use the free cable sizing calculator
Run a single protected cable calculation without signing in, or build cable calcs in Adelphos Chat when you want guidance through the inputs and returned checks.
Frequently asked questions.
What are Cable Calcs?
Cable Calcs are documented cable calculations that use the declared circuit, installation, protection and earthing information to check a proposed cable size. Adelphos keeps the inputs, returned checks and review boundary together.
Can I use the cable sizing calculator without an account?
Yes. The public cable sizing calculator is free to use without signing in. Build the cable calculation in Chat when you want guided input collection and help reviewing the result.
What does the Cable-Calcs UI check?
Adelphos returns a structured cable calculation record with current-carrying capacity, voltage-drop, earth-fault-loop, disconnection-time and CPC checks for competent review; the free cable sizing calculator remains available without signing in.
Does Adelphos recommend a cable product?
No. Adelphos performs calculation-only checks and does not recommend a manufacturer or catalogue product. The responsible designer must verify the proposed cable and project requirements.
Can Cable Calcs be built in Adelphos Chat?
Yes. Build in Chat to work through the circuit inputs, run the protected cable calculation and review the returned checks with guidance.
Build and review cable calcs with Adelphos.
Open Adelphos Chat to work through the source information, create the structured output and keep the responsible reviewer in control before issue or use.
Build cable calcs in Chat