H and S working near power lines

[chopperpete]

Man survives electric shock of 14,000 volts which melted flesh from bones

METRO.CO.UK

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His parents and newly pregnant parter were told he was unlikely to live for the rest of the day.

Was informed by a neighbour who worked for SSE power can jump to earth even if you are several metres away....he lost a work colleague who's was carrying a metal tool box near a transformer...

[Khriss]

Its whatever the Network engineer says it is for your RA-MS,  3m is usual, can be more, we dont let pruning poles or metal ladders on track. Even barrows are banned in some places. K

[Paddy1000111]

I would be curious as to how close he got. Most 11kv kit usually has around 30cm of gap between primary and earth conductors. He must have been pretty darn close! 😳 Obviously H/S distances are a lot more IIRC it's 5m (10m for a risk assessment to be filled out)

 

Just looked it up on HSE:

Low voltage- 1m

11kv-33kv- 3m

132kv- 6m

275-400kv- 7m

Edited January 19, 2021 by Paddy1000111

[tree77]

2 hours ago, Paddy1000111 said:

I would be curious as to how close he got. Most 11kv kit usually has around 30cm of gap between primary and earth conductors. He must have been pretty darn close! 😳 Obviously H/S distances are a lot more IIRC it's 5m (10m for a risk assessment to be filled out)

 

Just looked it up on HSE:

Low voltage- 1m

11kv-33kv- 3m

132kv- 6m

275-400kv- 7m

From memory, before WPD took over, working for Central Networks it was only 2m on 11kv.

But they distances are the safety/vicinity zones, within that there's the live zone. Safety distances are there for a reason, and unfortunately we all estimate distance differently so better to be safe than sorry. The starting point should be using proximity zone 1 and 2 which is what NPTC use (exception of UA's) and than take advice from network operator.