In article ,
Huge wrote:
On 2015-09-02, Dave Liquorice wrote:

[22 lines snipped]

The only glaring error is the use of LV to differentiate 240 from 11
kV. To the DNO's 11 kV is "LV", I think 33 kV might be be lowest "HV"
but it could be 125 kV.

33kV is HV, according to the man from the 'leccy. The farm next door
is being demolished and when the bloke from the 'leccy turned up to
disconnect its electricity (& put in a 240V drop for the builders) he
refused to go anywhere near the 33kV "because it was HV".

[Snip]

He was correct BS 7671:2008 aka The Wiring regs states:

Extra-low. Not exceeding 50V ac or 120V ripple free DC

Low. Exceeding extra-low but not exceeding 1000 v ac or 1500 V dc between
conductors or 600V ac or 900V dc between conductors and earth

High Exceeding low voltage.

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