Black And Red Wires Uk. The black wire for the switch should have a little bit of red tape around it or a little red sleeve on it. Before this change old wiring colours in the uk for 2 core wire were red live black neutral and earths are either bare or yellow and green whereas with 3 core cable live red blue neutral additional yellow and earth either bare or yellow and green. The old wiring colours used in the uk in domestic electrical situations and in domestic appliance plugs used to be three colours.
This was the live wire. Black neutral now blue red live now brown green earth now green yellow it is possible that your toaster is from somewhere in europe where they had a range of national colour codes before 2006 all different from each other. Well 99 of the time one of the black wires belongs to the switch cable that controls that light. New wiring colours since 2006.
India and pakistan including the other subcontinent countries and south africa aka proteas they adapted the iec now follow the old uk wiring color codes i e ryb red yellow and blue for three phase and red black for phase and neutral respectively.
Before this change old wiring colours in the uk for 2 core wire were red live black neutral and earths are either bare or yellow and green whereas with 3 core cable live red blue neutral additional yellow and earth either bare or yellow and green. The earth wire colour used to be pure green before 1977 then changed to green and yellow and has been the same ever since. You should also be looking at the condition of cables as well as the sheathing of the cables. Look at the. The black wire for the switch should have a little bit of red tape around it or a little red sleeve on it.