32 Amp Radial Cable Size

Enter your proposed cable size type of insulation voltage ambient temp 30 is norm your cable length and circuit load in amps.

32 amp radial cable size.

In most instances the size of cable should be printed on the sheath but if not you will need to calculate the diameter of the wire to determine its size which means working out the area of a circle e. As we have established above how you identify electrical cable size is through the size of wire it houses e g 1 5mm cable houses 1 5mm wire. The wire size chart below shows allowable ampacities of insulated conductors rated up to and including 2000 volts 60 c through 90 c 140 f through 194 f not more than three current carrying conductors in raceway cable or earth directly buried based on ambient air temperature of 30 c 86 f. Wire size chart and maximum amp ratings.

2 5 mm is roughly rated to 20 a max on a radial circuit. A radial circuit run with a 2 5 cable should not be supplied off a mcb greater than 20amp even thought 2 5 cable can withstand 26amps or so if the load is greater than this and the mcb is rated at 32 amp the cable can over heat and the breaker still may not trip in time. So yes it s a fire risk and the installation is unsafe. We have been manufacturing cables since 1984 and among our current staff alone we have over 1000 years direct cable manufacturing experience.

Cable selection copper only up to 25mm above this cable reactance must be considered. Doncaster cables is the largest british owned general wiring manufacturer in the uk.