Toilet light not working

[JPChilvers]

To all electricians: my toilet light stopped working and the bulbs and entire fixture has been changed. Could the extraction fan have blown and would that affect the light?

 

[SJD]

I can think of several causes why the light stopped working, but wonder if anyone did any fault finding, rather than randomly start changing components?

First I'd check the switch? Next, is there an incoming L feed from the previous light on the circuit (fault could easily be at the previous light (or equally a break in the N return)?

You need something more than a neon screwdriver or non-contact 'pen' detector to check properly, these can be misleading.

The fan is probably one of the last places I'd look (other than loose wiring at some badly made junction if the fan was added at some point).

 

[Pete999]

I can think of several causes why the light stopped working, but wonder if anyone did any fault finding, rather than randomly start changing components?

First I'd check the switch? Next, is there an incoming L feed from the previous light on the circuit (fault could easily be at the previous light (or equally a break in the N return)?

You need something more than a neon screwdriver or non-contact 'pen' detector to check properly, these can be misleading.

The fan is probably one of the last places I'd look (other than loose wiring at some badly made junction if the fan was added at some point).

Me I would change the lamp first!!

 

[SJD]

Me I would change the lamp first!!

The OP did say he had changed the bulbs (aka lamps)!

 

[James]

Have you changed any light fittings or switches anywhere else in the property?
Also, turn each breaker off and back on one at a time, sometimes they can trip but still appear on.

 

[JPChilvers]

I can think of several causes why the light stopped working, but wonder if anyone did any fault finding, rather than randomly start changing components?

First I'd check the switch? Next, is there an incoming L feed from the previous light on the circuit (fault could easily be at the previous light (or equally a break in the N return)?

You need something more than a neon screwdriver or non-contact 'pen' detector to check properly, these can be misleading.

The fan is probably one of the last places I'd look (other than loose wiring at some badly made junction if the fan was added at some point).

Could it be the switch if the switch has three switches?

 

[pc1966]

Sometimes you will find with a toilet that has been added/converted it is powered using a FCU (fused connection unit) from a socket circuit and not, as one might expect, from one of the lighting circuits.

Check at your CU (consumer unit = fusebox) in case there is something that has tripped, but also look around the toilet area for anything looking a bit like one of these:

MK Logic Plus 13A Switched Fused Spur & Flex Outlet White - Screwfix

Order online at Screwfix.com. 13A. Double pole fused connection unit with flex outlet. FREE next day delivery available, free collection in 1 minute.

www.screwfix.com

If so you might find it has a 3A fuse that blew with a failed lamp.

 

[SJD]

Could it be the switch if the switch has three switches?

I presume you mean a 3-gang switch (one switch is for the toilet, the other two for other lights). Yes, certainly one switch can fail, or even something simple like a wire loose and fallen out of a terminal.

 

[DJAndy]

Sometimes you will find with a toilet that has been added/converted it is powered using a FCU (fused connection unit) from a socket circuit and not, as one might expect, from one of the lighting circuits.

Check at your CU (consumer unit = fusebox) in case there is something that has tripped, but also look around the toilet area for anything looking a bit like one of these:

MK Logic Plus 13A Switched Fused Spur & Flex Outlet White - Screwfix

Order online at Screwfix.com. 13A. Double pole fused connection unit with flex outlet. FREE next day delivery available, free collection in 1 minute.

www.screwfix.com

If so you might find it has a 3A fuse that blew with a failed lamp.

Bathroom light & fan in my house is fed via a switched fused connection unit from an RCD protected ring final rather than the non RCDed lighting loop