egc required since when?

[mayjong]

hey all-
how long has an egc been required to be installed/run with a feeder?
thanks!

 

[480sparky]

1971 .

 

[roger]

Of course, the EGC could be the raceway and even then it depends on what the feeder was supplying.

Roger

 

[Volta]

1971 .

I'll see your 1971 and raise you 1965. 215-7.

This is a specific requirement in the feeder article. The laundry branch-circuit grounding was required in 1947, which might have implied a feeder EGC, but . . . :roll:

 

[480sparky]

I'll see your 1971 and raise you 1965. 215-7.

This is a specific requirement in the feeder article. The laundry branch-circuit grounding was required in 1947, which might have implied a feeder EGC, but . . . :roll:

Doesn't say it's required. Just says to run it if it is required. I'm going by 250-5 of the '71. Prior to that, it was only required to be grounded if it could be done.

 

[Volta]

Doesn't say it's required. Just says to run it if it is required. I'm going by 250-5 of the '71. Prior to that, it was only required to be grounded if it could be done.

But 250-5 is to connect the system to the earth.

The OP asked about feeder circuits.

hey all-
how long has an egc been required to be installed/run with a feeder?
thanks!

That is 215-7, in 1965, as far as I know.

 

[480sparky]

...........
That is 215-7, in 1965, as far as I know.

And here's what it says:

Where a feeder supplies branch circuits in which grounding conductors are required, the feeder shall include or provide a grounding means.......

So it doesn't say you always need a ground. Only if the BCs need grounded.

 

[Volta]

And here's what it says:



So it doesn't say you always need a ground. Only if the BCs need grounded.

That is very true! Of course, 250-5 1971 doesn't ever ask for an EGC to be run with a feeder. :roll:

So I guess the right answer reading it that way is:

Isn't required yet. Section 215.6 2008 still starts with the word "Where". So if not needed, then it is not required by the feeder article. If it is needed by the supplied branch-circuits, then 1965.

 

[bphgravity]

1962 is actually the first edition...

Other significant grounding and bonding dates:

1892 – NYBFU prohibits the grounding of electrical systems and requires existing systems to be removed from service.
1897 – Mandatory grounding of Lightning Arrestors only.
1899 – Grounding becomes permitted but not required.
1901 – NEC Rule 13A contains provisions for grounding.
1903 – “May be grounded” changed to “should preferably be grounded.
1913 – First code edition to mandate the grounding of one circuit conductor of a service.
1918 – First code edition prohibiting the grounded circuit conductor to be bonded to equipment – Rule 15A.
1962 – First code edition requiring equipment grounding for branch circuits.