Wonderful Cable For 20 Amp Circuit
Not suitable for ring mains.
Cable for 20 amp circuit. In most cases 1mm should be fine but depends on how many lights are on the circuit and how long the cable run is. It s recommended to check the ampacity of a wire after doing a voltage drop. One 30amp circuit for a twistlock one 20 amp circuit for a 20 amp twistlock and a second 20 amp circuit for a quad outlet box with standard duplex outlets.
Cable length in mtrs. Enter your proposed cable size type of insulation voltage ambient temp 30 is norm your cable length and circuit load in amps. 6 amp typ b.
A 15 amp circuit can support devices drawing a total of 1 800 watts and a 20 amp circuit can support devices totaling 2 400 watts. The cable run from the meter box to the pump pool equipment is 41 45 metres. There are two standard circuit capacities 15 and 20 amps.
I am installing a swimming pool which requires a separate 20 amp circuit to run the pump pool light and future heat pump. Although 15 amp circuits were once quite common 20 amp circuits wired with 12 amp wire are becoming much more common and are required by code in many applications such as for kitchen small appliance circuits. If quite a few are required or the cable run is over a long distance then 1 5mm cable should be used to cope with supply demand and voltage drop.
The pool pump is rated at 7 4 amps runs on single phase 240 volts and is 50hz. Each circuit has its own hot and neutral and in addition to the conduit being a ground all the way back to the panel i also ran a 10 gauge ground that i will pigtail for the 3 circuits in addition to wiring to the outlet box as well. This is typically in a raceway cable tray or conduit in a cable burried in the earth or in open air.
Voltage drop choose the maximum percentage of the source voltage drop. General household circuits used to power light fixtures and plug in appliances are normally 20 amp or 15 amp circuits which use 12 gauge or 14 gauge wire respectively. Choosing cable for a 20 amp receptacle you need 12 gauge cable for a 20 amp circuit no matter whether the circuit is 110 or 220 volts according to total home supply.