- Joined
- Jan 11, 2012
- Messages
- 43
- Reaction score
- 2
Took a 2 gang switch off a wall in a shop to investigate after workers had complained of crackling sounds and more recently tripping of the circuit.
It appeared that there was a loose termination at the L1 terminal on the back of one of the switches.
The unusual thing I discovered though was the wiring, with brown used for the L1 switch lines to the field and blue used into the common terminals on each 1 way switch on the 2 gang plate as well as a link between each L1 terminal!
1 switch controls 1 bank of around half a dozen or so LED down lights while the other switch on the same plate controls a section of LED uplights.
Both common feeds (in blue :-/) to the back of the switch are isolated by the same MCB.
The brown link between each L1 terminal when removed makes the lights not work!
It would seem I've opened up a can of worms here, but the shop has been open for around 3 years and the wiring has been like this the whole time!
I'm concerned that since I've found this and it's not right that I should report it and suggest a course of action for the shop manager.
It appeared that there was a loose termination at the L1 terminal on the back of one of the switches.
The unusual thing I discovered though was the wiring, with brown used for the L1 switch lines to the field and blue used into the common terminals on each 1 way switch on the 2 gang plate as well as a link between each L1 terminal!
1 switch controls 1 bank of around half a dozen or so LED down lights while the other switch on the same plate controls a section of LED uplights.
Both common feeds (in blue :-/) to the back of the switch are isolated by the same MCB.
The brown link between each L1 terminal when removed makes the lights not work!
It would seem I've opened up a can of worms here, but the shop has been open for around 3 years and the wiring has been like this the whole time!
I'm concerned that since I've found this and it's not right that I should report it and suggest a course of action for the shop manager.