A problem... which in my mind is embarrassingly simple... but still has me scratching my head
I'm wiring a simple ceiling light in the home... It's Finland so I have a screw block terminal and a hook on the ceiling, its pretty standard here. The terminal has 3 wires coming from the mains. black, red and grey. I read here that these are standard 3 phase colours (http://www.allaboutcircuits.com/vol_5/chpt_2/2.html) but I have also been told not to trust the wire colours in Finland. Also, 3 phase on a standard light fitting is surely not right. So to check I have used a phase test screwdriver to confirm red and black are 'hot', assume live and neutral, and gray is 'dead', presume ground.
I continue to connect the blue and brown wires of the light fixture to the black and red. Respectively, although I believe there is no difference between live and neutral in respect of the light bulb. I leave the ground wire unconnected, pretty common for a ceiling light, right? With my phase test screwdriver I confirm that connection is made and connections to the bulb are 'hot'. However when I connect the bulb it does not work. I again check to see that the live & neutral are hot, but now they are not. Of course I have tried more than on bulb, and checked these bulbs in other lights. I also tried reversing the red and black, and as I expect no difference.
Any idea what might cause this problem
I'm wiring a simple ceiling light in the home... It's Finland so I have a screw block terminal and a hook on the ceiling, its pretty standard here. The terminal has 3 wires coming from the mains. black, red and grey. I read here that these are standard 3 phase colours (http://www.allaboutcircuits.com/vol_5/chpt_2/2.html) but I have also been told not to trust the wire colours in Finland. Also, 3 phase on a standard light fitting is surely not right. So to check I have used a phase test screwdriver to confirm red and black are 'hot', assume live and neutral, and gray is 'dead', presume ground.
I continue to connect the blue and brown wires of the light fixture to the black and red. Respectively, although I believe there is no difference between live and neutral in respect of the light bulb. I leave the ground wire unconnected, pretty common for a ceiling light, right? With my phase test screwdriver I confirm that connection is made and connections to the bulb are 'hot'. However when I connect the bulb it does not work. I again check to see that the live & neutral are hot, but now they are not. Of course I have tried more than on bulb, and checked these bulbs in other lights. I also tried reversing the red and black, and as I expect no difference.
Any idea what might cause this problem