I have a switched and neon fused connection unit on a ring main. When the switch is in the off position and checking the Load live and neutral connections with a voltmeter, both are giving a 240V reading. When the switch is in the on position the live gives 240V and the neutral gives 0V, as expected. Is the FCU faulty?
Background on this:
The FCU is for a cooker hood. When it was first switched on it blew the 3A fuse straight away and knocked the power out. It did this a couple more times after checking the wires going into the FCU and trying again.
Seemed it must either be a faulty hood or the flex connections in the chocbox on the spur from the FCU. The flex wires were removed and refitted, and after that the.fuses stopped blowing and the hood is working
Later when the lights were off I noticed the neon had a faint glow while the switch was in the off position. This is when I checked the connections with the voltmeter and got 240V on both live and neutral. Also noted that pressing any of the buttons for the fan or lights on the hood would not make the hood operate, and would still get 240V readings on both live and neutral, but it would cause the neon to stop glowing.
Removing the fuse would also cause the neon to stop glowing, and give 0V on both live and neutral. Whereas removing the Load wires that connect to the hood would also cause the neon to stop glowing, but would continue giving 240V on live and neutral.
I have another FCU on the ring main with nothing connected to Load yet, so I checked that one's Load connectors with the Voltmeter. I think this one was giving a low/>12V on both live and neutral when switched off, if I remember correctly... (which still seems wrong to me aswell.)
The only thing I haven't tried yet is taking the FCU off and putting a different one in its place.
Background on this:
The FCU is for a cooker hood. When it was first switched on it blew the 3A fuse straight away and knocked the power out. It did this a couple more times after checking the wires going into the FCU and trying again.
Seemed it must either be a faulty hood or the flex connections in the chocbox on the spur from the FCU. The flex wires were removed and refitted, and after that the.fuses stopped blowing and the hood is working
Later when the lights were off I noticed the neon had a faint glow while the switch was in the off position. This is when I checked the connections with the voltmeter and got 240V on both live and neutral. Also noted that pressing any of the buttons for the fan or lights on the hood would not make the hood operate, and would still get 240V readings on both live and neutral, but it would cause the neon to stop glowing.
Removing the fuse would also cause the neon to stop glowing, and give 0V on both live and neutral. Whereas removing the Load wires that connect to the hood would also cause the neon to stop glowing, but would continue giving 240V on live and neutral.
I have another FCU on the ring main with nothing connected to Load yet, so I checked that one's Load connectors with the Voltmeter. I think this one was giving a low/>12V on both live and neutral when switched off, if I remember correctly... (which still seems wrong to me aswell.)
The only thing I haven't tried yet is taking the FCU off and putting a different one in its place.