Upstairs lights not working

Question

All the lights on the first floor stopped working at once but the downstairs is fine and the fuse box hasn't tripped. What's likely to have caused this?

Brad · Answer

More than likely it’s your RCD that has tripped, rather than the lighting circuit itself. The RCD is often overlooked when reviewing if anything has tripped in the consumer unit.

Elvis · Answer

Probably a loose connection at some point of the installation. Probably incoming feed to a 3plate/ switch.

Tyla · Answer

There could be many of reasons most likely a continuity fault, a break or loose connection somewhere along the circuit but would need to inspect further to give a definitive answer.

Rio · Answer

If all of the upstairs lights have stopped working at the same time, but the downstairs lights are still working and no breaker has tripped, the most likely causes are:

• A fault on the upstairs lighting circuit, such as a loose connection at a ceiling rose, light fitting, junction box, or switch.
• A failed connection in the circuit causing the permanent live, neutral, or switched live to be lost to the entire upstairs lighting circuit.
• A faulty MCB, RCBO, or fuse protecting that circuit, even if it doesn’t appear to have tripped.

We’d recommend having the circuit tested and inspected, as the issue is unlikely to be caused by individual bulbs given that all lights failed simultaneously.

Sakib · Answer

It could be a number of things. It could be the light itself, the lamp or there could be a fault in the wiring which would require investigation

Anatoliy · Answer

First chek is are they on a separate fuse?
One fuse for downstairs and fuse for upstairs?

Brian · Answer

Either the perminant live or neutral is disconnected or snapped.

Luay · Answer

As a qualified electrician I need to check there health fault to be able to give you a right answer as there are many reasons for this failure. Thanks

Macauley · Answer

More than likely a loose connections somewhere, or a faulty switch or light fitting.

John · Answer

There can be a few issues broken connection in the 1st main light in the series, The live needs to be checked ans continuity needs to be checks in Live Neutral and Earth from Consumer unit to the 1st main light.. all the way to the last light.

Upstairs lights not working

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