Light bulb blew an tripped breaker.

Out of curiosity Christopher ,at what point did the light bulb stop working ? When you turned a switch on it didn't come on ,at that point did you hear a popping sound ,and then find all other lights not working and MCB had tripped ?
Or some other scenario completely ?
 
Bazza-spark said:
Just a hunch, but take the rose down and give us a photo of what's behind it. I have just spotted green and yellow sleeving that isn''t inkeeping with the other things I can see.

Maybe a long shot but worth a look before you go ripping your loft up.

Edit, the permanent live may be hidden back there.
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Just looks like a terminal box fitted above rose.
 

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terrymac said:
Out of curiosity Christopher ,at what point did the light bulb stop working ? When you turned a switch on it didn't come on ,at that point did you hear a popping sound ,and then find all other lights not working and MCB had tripped ?
Or some other scenario completely ?
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The hall light was on and when it blew there was a loud popping sound. Just assumed at that point the bulb had blown needed replaced. At that tried all lights and there where off. Then found the breaker had tripped.
 
So when you noticed the hall light suddenly stopped working ,were all the other lights on the circuit still working,before you looked at the MCB ?
In other words ,is it possible that the hall light is the first light that you NOTICED went off ,and before you looked at the MCB ,all other lights were off as well ? What I am getting at is could the fault be elsewhere ?
 
terrymac said:
So when you noticed the hall light suddenly stopped working ,were all the other lights on the circuit still working,before you looked at the MCB ?
In other words ,is it possible that the hall light is the first light that you NOTICED went off ,and before you looked at the MCB ,all other lights were off as well ? What I am getting at is could the fault be elsewhere ?
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When the hall light blew none of the other lights worked. Had to flip the breaker back on for the other lights to work. It's only this light that has the issue. When it tripped last night with the pendant out it was when I was unsrewing the switch face plate and moving it about to take picture. I've left the breaker on as I wasn't touching any wires. Not sure if me moving switch about caused it. The breaker hasnt flipped since then with the switches off. Thinking it's pendant as you first said.
 
Update boys. It's not the pendant. Switched over new pendant and it popped and tripped again when switch turned on. I'll go up the loft again and look inside the junction box and take pictures of the conduit setup.

Edit. Turned upstairs switch back off. Flipped breaker again and tried the downstairs switch and the breaker doesn't trip.
 
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In your first pic of upstairs switch,there is a black insulated wire coming in with the reds ,but it's not connected to the switch. Where does it go to and how is it terminated ??
 
Pictures of the conduit and junction box from up loft.
 

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On the top photo is that the conduit that goes down to the switch in question?

Looks like a threaded end which might be rough and catching a cable somehow, maybe?
 
Ind spark said:
On the top photo is that the conduit that goes down to the switch in question?

Looks like a threaded end which might be rough and catching a cable somehow, maybe?
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That's the conduit going down to pendant. Underneath the wood is a square terminal box. Can only assume it's screwed into it.

Edit. Second picture shows conduit going through plasterboard to switch.
 
You need to work out which cable in the nearest junction box to the light is the one feeding your light, and then check the terminations at each end of that cable to see that they are terminated properly and not damaged.

Assuming it’s fine, you may need to pull the cable back from the light, out of the conduit, to the nearest junction box to check it. If you do that, make sure to tie a drawstring onto one end so you can replace it / pull the original cable back in if it’s fine.

If that doesn’t identify any issues, you can either work further back along the circuit checking as you go. You’ll need to be pretty methodical about it.

This all assumes you don’t have any test equipment ?

If you don’t want to do that, you may need to call a spark.
 
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