Bathroom mirror wiring wrong?

[Jim]

I have a new bathroom mirror with lights which works ok but makes a constant buzzing noise whether it is turned on or off.

It wasn’t installed by me, but when I remove the front I was surprised to see that it has been wired using 2 electric wires - see attached photo.

As a complete novice I was wondering whether this was correct and perhaps this was the reason for the constant buzzing?

Would appreciate any help please.

 

[Strima]

Make and model of the mirror?

 

[Pete999]

Best call an electrician Jim, without being able to trace where these two cable go to or come from its difficult to advise, there could be a Forum member close to your location who may be able to help you out, to far for me to visit.

 

[westward10]

If it has a shaver socket you may well be hearing the isolating transformer.

 

[Octopus]

2 wires means the supply is looped - not unusual in the least.

 

[Midwest]

Possibly OP referring to lack of earthing? Does the luminaire have one of either of these images on it or in the instructions;

?

 

[Pete999]

2 wires means the supply is looped - not unusual in the least.

Live pair in and Live and SL from switch, which is which is my question.

 

[westward10]

Seems wired correctly to me.

 

[Pete999]

Live pair in and Live and SL from switch, which is which is my question.

Guess we will never know unless Jim gets a sparky in will we.

 

[Michael Sands]

Transformer casing is Loose and may need spray lacquer or hot glue to stop buzzing if new mirror replace.
the wiring is not the problem

 

[Pete999]

2 wires means the supply is looped - not unusual in the least.

 

[Pete999]

I have a new bathroom mirror with lights which works ok but makes a constant buzzing noise whether it is turned on or off.

It wasn’t installed by me, but when I remove the front I was surprised to see that it has been wired using 2 electric wires - see attached photo.

As a complete novice I was wondering whether this was correct and perhaps this was the reason for the constant buzzing?

Would appreciate any help please.

View attachment 44065

Where do the Brown and Blue wires go to and where is the Mirror light switched from, is it an integral switch?

 

[westward10]

They normally have a pull switch, internal switch behind one of the doors. The supply is permanent live.

 

[Octopus]

Live pair in and Live and SL from switch, which is which is my question.

99% of them have some form of switching built in so that the shaver points are always live

 

[Pete999]

99% of them have some form of switching built in so that the shaver points are always live

Agree but do we know for sure? if it's a loop feed as you suspect, where is the loop going?