Guidance on Choice and Use of Cable

Always use the correct size of cable. Attempting to supply large currents through cables of insufficient thickness is bad practice and should be avoided.

See the chart below for guidance.

Always protect circuits with suitable fuses. Calculate the required fuse value and fit that value. If you put in too large a fuse you risk damaging the device supplied or the cable itself. To calculate the value of fuse required, add together the wattage of the lamps or other devices which form the load and divide this total by the voltage (12 volts or 24 volts).