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Alison

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Recently changed plug sockets and light switches. Have noticed before this was done we were burning through light bulbs.

A few of our plug sockets are high voltage 250 -270.

Any ideas
 
If you have 270 V between live and neutral then yes, that is a little high. How did you measure this?
 
Recently changed plug sockets and light switches. Have noticed before this was done we were burning through light bulbs.

A few of our plug sockets are high voltage 250 -270.

Any ideas

250V is normal for the UK, this is what most substations are set up to supply.
270V is above the normal limits and if this has been measured with an accurate calibrated meter you should contact your distribution network operator ASAP to report the fault.
 
As far as I know no but I do know one of them might as they r changing alot within there house

You and your neighbour both need to contact your supplier. Let us know what they say.
 
Its k I know I'm not an electrician. Just trying to figure this out as we have been trying to solve it all day and beginning to wonder if it's a larger issue
 
Recently changed plug sockets and light switches. Have noticed before this was done we were burning through light bulbs.

A few of our plug sockets are high voltage 250 -270.

Any ideas
That's not HV, just higher than normal LV voltage, what were/are you measuring the Voltage with?
 
It may not be your next-door neighbour but the house a few doors down that is on the same supply phase as you that has the problem as well.
We were doing a school a few years ago where the emergency light fittings kept on burning out this was due to the voltage at the fittings being 250v+ we contacted the lighting manufacturer who said that the fitting gear was up to 250v so got in touch with Weston Power who altered the windings at the sub-station.
 
We used a calibrated multi metre for measuring

How recent was the last calibration?
Ideally you would check the test results with another calibrated meter to double check the results.

Anything over 253V is above the normal limits and could indicate a problem, there are certain faults which can cause the voltage to rise at some properties and fall at others which can be very dangerous, you should contact your DNO and report the fault.

One thing which has been known to cause this problem is the theft of the copper N-E from a substation.
 

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