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How long has it been NEC mandated for residential services to have one conductor grounded?
Grounded Residential Services
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I changed services from the '20's that were bonded to the water main. Originally required,don't know.
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The oldest services I THINK I saw were late 30's and they were 2-wire one conductor was grounded.
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Using your own phrase, per the system that does no harm,
https://www.google.com/search?q=NEC...j8&sourceid=chrome&espv=210&es_sm=93&ie=UTF-8
the Fifth entry.
https://www.google.com/search?q=NEC...j8&sourceid=chrome&espv=210&es_sm=93&ie=UTF-8
the Fifth entry.
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I did a rewire of a building,the date brick was 1928. Them boys must of all been Popeyes, getting those wires in those Old disconnects.
According to these guys, it was first mentioned in NEC as a recommendation in 1903, and first made a code requirement in 1913.
http://www.dli.mn.gov/ccld/PDF/eli_GFCI_history.pdf
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Yes. Good info. I see.
For the longest time, Services... and everything about them... was per the Poco.
It didn't hit EUSERC until 1945 -- and fatalities with the Brothers -- that they realized grounding was really an issue.
You can look through the back threads, but EUSERC got started when war plant were killing the Brothers.
Yes, it's that basic.
1945
It, the fiasco, was a learning experience for EVERY Electrical Engineer.
Yes, they had a massive con-fab over the fatality.
It was only after the confab that EUSERC was founded...
With SCE at the head of the list.
PG&E right along side.
EUSERC has spread across all of the Western States.
At a fundamental basis: EUSERC demonizes ungrounded Services.
You can get such a Service -- but ONLY upon application.
( Paper mills, chemical plants, etc. )
It didn't hit EUSERC until 1945 -- and fatalities with the Brothers -- that they realized grounding was really an issue.
You can look through the back threads, but EUSERC got started when war plant were killing the Brothers.
Yes, it's that basic.
1945
It, the fiasco, was a learning experience for EVERY Electrical Engineer.
Yes, they had a massive con-fab over the fatality.
It was only after the confab that EUSERC was founded...
With SCE at the head of the list.
PG&E right along side.
EUSERC has spread across all of the Western States.
At a fundamental basis: EUSERC demonizes ungrounded Services.
You can get such a Service -- but ONLY upon application.
( Paper mills, chemical plants, etc. )
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This IS a back thread. Just like every other thread these days it seems.
Sent from my SM-G920W8 using Tapatalk
What is the code reference for grounding a service? I have a NEC from the 20’s, I can see if the code is in it
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The modern NEC will have it in article 250, but the NEC from the 20s is likely to be arranged differently.
Found it and yes, there are not many codes in this tiny pamphlet!
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That's a gem Ed, might be worth $$$.....:whistling2:~CS~
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