I am replacing an outside floodlight, the cable from the house has 4 wires (black, brown, grey and yellow), but the floodlight has the standard 3 live, neutral and earth fitting. How would I wire the new floodlight.. the wiring for the old floodlight is less than a year old on a house rewire.Thanks!
Four wire power cables used to be used for 2 and 3 phase power. You would normally provide floodlight power with the use of 3 wires. How long is the cable length from house to floodlights? I would look to see what your source wire colors are and try to match those. It used to be in the USA that the red wire was used to carry the 120/240 Volts AC (50 ~ 60~ Herz). The Black wire was considered the return or negative line; and if you have a green wire it is used to put an earth ground on all the shielding, metal jackets, etc.
