How is cable size calculated?

Cable size recommendations follow a simplified rule: 6A→1.5mm², 10-16A→2.5mm², 20-32A→4mm², 40-63A→10mm², 63A+→16mm². Always verify with local electrical codes.

Can I export the design?

Yes, click Export to download the load schedule as a text file. The schedule includes circuit numbers, component types, ratings, calculated loads, and cable sizes.

Electrical DB Builder

NEW

Design electrical distribution boards by dragging and dropping components onto a DB canvas. Supports Main Isolator, RCCB, ELCB, MCBs (6A-40A), RCBO, SPD, busbar, contactor, and energy meter. Generate a complete load schedule with automatic cable sizing.

DB Builder

Components

Was this tool helpful?

Send output to:

How to use Electrical DB Builder

Drag a Main Isolator or Main MCB as the incomer
Add RCCB/ELCB for earth leakage protection
Place MCBs for individual circuits (lights, sockets, etc.)
Optionally add SPD for surge protection
Click Generate Schedule to create the load schedule
Export as text file for documentation

What is Electrical DB Builder?

This tool helps electricians and electrical engineers design distribution boards. Drag components from the palette onto the DB canvas, arrange them in the correct order (incomer → protection → final circuits), and generate a load schedule table with ratings, calculated loads, and recommended cable sizes.

FAQ

How is cable size calculated?: Cable size recommendations follow a simplified rule: 6A→1.5mm², 10-16A→2.5mm², 20-32A→4mm², 40-63A→10mm², 63A+→16mm². Always verify with local electrical codes.
Can I export the design?: Yes, click Export to download the load schedule as a text file. The schedule includes circuit numbers, component types, ratings, calculated loads, and cable sizes.

Related tools

Author

Omar Hassan"The Number Cruncher"

Engineer & Unit Conversion Specialist

Omar is a mechanical engineer by training and a unit-conversion enthusiast by passion. He's built calibration systems for aerospace manufacturers.

📖 "Electrical DB Builder" on Wikipedia·"Construction Calculators" on Wikipedia·"Electrical DB Builder" on Britannica

People also use

Plumbing Path Designer
🚧 Construction Calculators
Design plumbing connections by dragging elbows, reducers, couplings, and adapters onto a canvas. Set start/end BSP thread types and sizes. Auto-solve suggests the optimal fitting path.

← Back to Construction Calculators · All tags

Last updated: 2026-06-20

Electrical DB Builder

Something went wrong

📋 Load Schedule

How to use Electrical DB Builder

What is Electrical DB Builder?

FAQ

Related tools

Author

People also use

Ad blocker detected

Keyboard shortcuts