Voltage optimizers any good?

[spynage]

Hi.

Are they any good and how do they work? Do they lower the voltage across the board? If so what about appliances that use more than 220v?

Thanks

Spynage

 

[pc1966]

I have one installed without it I had 258v come through the sockets and with it I get 220v, I've had it since 2015 I've had no problems with it at all.

That is a use-case where they make sense, although 258V is out of the ESQCR range of +10%/-6% on the nominal 230V (rule 27.3b) so it should be corrected anyway:

The Electricity Safety, Quality and Continuity Regulations 2002

These Regulations replace the Electricity Supply Regulations 1988 (S.I. 1988/1057) and all subsequent amendments (S.I. 1990/390, S.I. 1992/2961, S.I. 1994/533, S.I. 1994/3021 and S.I. 1998/2971).

www.legislation.gov.uk

 

[Ronron]

How was this measured though? I wouldn't trust simple meters as the sine wave is often distorted by harmonics and the rms calculation might be inaccurate because of it, I assumed if it was out of tolerance ukpn would sort it. Do you have solar and was the voltage causing an issue?

I don't Have solar just a two bed terrace house in town built in the 1800s

 

[littlespark]

What PC1999 was trying to explain is, that if your voltage is so far out of normal range,(253 being the upper limit) then it is your suppliers responsibility to correct it, not for you to buy a piece of equipment yourself.