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#139208 - 10/23/03 08:01 AM GFCI
Creighton Offline
Member

Registered: 01/06/02
Posts: 56
Loc: Hayward, CA
Does anyone have information on earth leakage circuit breakers used in
South African mines around 1950?
Your help will be appreciated. Creighton

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#139209 - 10/23/03 08:17 AM Re: GFCI
C-H Offline

Member

Registered: 09/17/02
Posts: 1508
Loc: Stockholm, Sweden
Here is a paper on the development of earth leakage circuit breakers from a South African perspective.
http://www.cbi.co.za/papers/24/CBI2.pdf

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#139210 - 10/23/03 09:17 AM Re: GFCI
Creighton Offline
Member

Registered: 01/06/02
Posts: 56
Loc: Hayward, CA
Thanks, C-H. That is just the ticket.
Creighton

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#139211 - 10/24/03 11:45 AM Re: GFCI
geoff in UK Offline
Member

Registered: 12/30/02
Posts: 172
Loc: UK
That's an excellent bit of technical history. It throws a new light on things we now take for granted.

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#139212 - 10/24/03 12:25 PM Re: GFCI
pauluk Offline
Member

Registered: 08/11/01
Posts: 7693
Loc: Norfolk, England
It does indeed, I find these historical summaries of certain devices or practices to be very illuminating.

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