Cable size calculator | Tiny Build Electrics

Your build

Where it's going

Campervan or motorhome Cabin or tiny homeOr a garden room

System voltage

The battery bank's nominal voltage.

12 V 24 V 48 V

What you're wiring

Circuit

The run

One-way cable length

Measure the route one way. The return is already allowed for.

How the cable runs

Pictured as twin-core. DC loads are twin-core where a twin-core we stock is big enough; if not, two single cores run together.

Clipped directCable clipped or cable-tied to a panel or surface In trunkingOn a wall or panel In conduitOn a wall or panel Insulated wallIn conduit, inside insulation

Ambient temperature

30 °CNormal 40 °CCupboard or near a heater 50 °CRoof or very warm 60 °CEngine bay OtherEnter it

Bundled or insulated?

Circuits bundled together

Including this one.

Thermal insulation

Advanced

Tighter voltage-drop limit (optional)

Only a tighter limit than ours is accepted.