bulbs tripping

[wayneward25]

Hi can anyone explain to me what this could be.

Ive recently done some work on an upstairs lighting circuit and I isolated the mcb and did the work turned the circuit on no problems afterwards I noticed 2 of the spot light bulbs on the downstairs lighting circuit had blown and the fridge bulb had blown on the power circuit.

Is this just a coincidence or have I done something I am unaware of?

 

[PrenticeBoyofDerry]

Replacing them would be a good starting point to answering your question.
I assume the fridge is not on the lighting circuit and you have not performed any tests, other than functional on the installation?
If so I would say you have been unlucky!

 

[wayneward25]

yea the fridge is on the socket and the lights in the kitchen are also on a seperate circuit.

My theory was maybe one of the bulbs blew in the kitchen which caused a surge and blew the other one which was probably on its way out anyway and the fridge bulb just blew coincidentally, changed the bulbs in kitchen and they work fine.

the mcb are type c breakers so they didnt trip when the bulbs blew

 

[ban-all-sheds]

Is this just a coincidence or have I done something I am unaware of?

Pure coincidence.

My theory was maybe one of the bulbs blew in the kitchen which caused a surge and blew the other one which was probably on its way out anyway

That would only make sense if they were in series.