Voltage Problem

[REAPER]

Hi

I recently added a wifi circuit breaker to my gesyer to monitor the power usage, it's been on about 20 days now.

When I first connected the wifi circuit breaker the voltage was about 233v. Over the past couple of days the voltage has risen to 246v, today it even went as high as 250.53v.

One of my light bulb already stopped working, I'm worried that more lights and even my appliances will burn out.

I know the voltage is supposed to be around 230v, I will like you'll go give me any advice on how to fix this problem.

Do I need to contact the municipality to report this problem?

Thanks

 

[Mier]

Grid voltage does vary.

Below what I measured over just the last two days:

 

[warwickw]

I'm had the reverse of this voltage drop to 200v, I reported it to municipality they sent their electrician around who verified it and then they worked back to find the issue.

 

[Rkootknir]

Hi

I recently added a wifi circuit breaker to my gesyer to monitor the power usage, it's been on about 20 days now.

When I first connected the wifi circuit breaker the voltage was about 233v. Over the past couple of days the voltage has risen to 246v, today it even went as high as 250.53v.

One of my light bulb already stopped working, I'm worried that more lights and even my appliances will burn out.

I know the voltage is supposed to be around 230v, I will like you'll go give me any advice on how to fix this problem.

Do I need to contact the municipality to report this problem?

Thanks

In SA residential electricity supply must be 230V ± 10% per government regulations.

So, anything from 207V to 253V is still in spec and all electric and electronic equipment should be able to handle it without any issues. When measuring using Wifi switches (and not dedicated equipment) you also need to take into account their accuracy which can potentially have significant error margins as well.

 

[REAPER]

Ok I understand, so if the voltage goes over 253v then I need to contact the municipality.

First the kitchen light burned out and just a few moments ago the room light was flickering. The circuit breaker I installed is 50A and works with eWeLink app, so I think the reading is accurate.

 

[Azure 12]

Voltage does change depending on load. For instance, turn the geyser on and off and see the difference, it might easily change by 10V per phase (I'm not sure how- or if your device would measure over more than 1 phase and if so whether or not it might average it or something or whether it reports only 1 phase.) Add ovens, stoves, kettles, heaters, etc, and you get the picture. If light-bulbs are not handling 250V then you may want to find better quality lights.