Lamp bulbs are blowing up...

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... and there were electrics works recently.

This started a couple of days ago.

The electrician came to install four new double sockets in a new bedroom. He used the cable going to the boiler. He added a junction box, and pulled two cables from there. One connects to two double sockets linked together on one wall. Same thing on the opposite wall.

I was a bit concerned that the circuit is not closed, so there is no connection from the last socket on the wall to the opposite wall. The electrician is not Part P certified and I was waiting for the Part P person to come to voice my doubts.

Now, the sockets do work.

The only peculiar thing is that in these two days, I had 3 light bulbs blow up in tabletop lamps. This did not happen before.

Two bulbs were of same make and fitted to the same lamp so I assumed a fault with the lamp. But the third one was on a different lamp and of a different make, so I suspect an issue with the electric circuit.

All lamps were on the upstairs electric socket circuit, which is the one that was modified. The circuit breaker did not trip in the fuse box. But then I have no MCB and a single point earth wire (old house).

Suggestions on the cheap?
 
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The new wiring might be dubious, be we'd need more details to be sure. Sockets aren't always wired in rings.

In any case, it's unlikely that the lamp failures are related.
 
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I was a bit concerned that the circuit is not closed, so there is no connection from the last socket on the wall to the opposite wall.

As endecotp said, socket circuits are not always wired in ring final circuits and are often wired as radial circuits where you can spur from a spur from a spur, etc... That said as the sockets are a new addition, they do need to comply with current regulations regarding minor works including that they need to be 30mA RCD protected, have a suitable Zs for the OCPD used, etc...


I am also curious what the voltage at the lamp sockets is? When you say blowing up, as in going bang and the glass shattering? Are these LED's, CFL's, or incandescent lamps that keep failing?

It may be worth trying a different make of bulb and seeing if the same thing happens, however it is unlikely that your new sockets are to blame unless the voltage to the lamp holders is excessive high.

The electrician is not Part P certified

IIRC One cannot be Part P certified, Part P is a government document to do with notifiable work what if you or a electrician is not a member of an appropriate government approved certified Part P scheme, then they have to notify the local authority building control directly of any notifiable work at a greater expense and hassle than if you were with a Part-P scheme. The work what you had done is not notifiable.
 

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