NEC - ART 230 Clearance Intent
- Thread starter GLE
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bphgravity
Senior Member
- Location
- Florida
Re: NEC - ART 230 Clearance Intent
I don't know the origin or the cycle it was introduced into the NEC, however I am sure it has been determined to be the distance just beyond that which one could reach and touch the conductors from the point of opening.
I don't know the origin or the cycle it was introduced into the NEC, however I am sure it has been determined to be the distance just beyond that which one could reach and touch the conductors from the point of opening.
jwelectric
Senior Member
- Location
- North Carolina
Re: NEC - ART 230 Clearance Intent
I was told that the three foot clearance around windows is for the fireman?s ladders. Notice that this rule does not apply to the space above a window.
Let?s not forget that a window is a means of egress.
I was told that the three foot clearance around windows is for the fireman?s ladders. Notice that this rule does not apply to the space above a window.
Let?s not forget that a window is a means of egress.
pierre
Senior Member
- Location
- Westchester County, New York
Re: NEC - ART 230 Clearance Intent
How about a combination of both. Notice that it is only a requirement for open conductors, not the SE cable with a sheath - which could be secured to the window frame if you so choose to.
How about a combination of both. Notice that it is only a requirement for open conductors, not the SE cable with a sheath - which could be secured to the window frame if you so choose to.
- Location
- Illinois
- Occupation
- retired electrician
Re: NEC - ART 230 Clearance Intent
If it was really for firefighters, it would include windows that are not designed to open. Just because it is not designed to open, doesn't mean that the firefighters won't open it and use it for rescue and/or fire fighting.
Don
If it was really for firefighters, it would include windows that are not designed to open. Just because it is not designed to open, doesn't mean that the firefighters won't open it and use it for rescue and/or fire fighting.
Don
jim k
Member
- Location
- Northwestern Oregon
Re: NEC - ART 230 Clearance Intent
Section 2322(c) Clearance from Buildings. Conductors shall have a clearance of not less than 36 inches from windows, doors, porches, fire escapes, or similar locations.
The second is under the heading, "Service Conductors on or in Buildings."
2333. Individual Conductors Exposed to Weather . . . Weatherproof conductors on exterior of buildings shall have a clearance from the ground of not less than 8 feet, and a clearance from windows, doors, porches, etc., or not less than 3 feet."
1951 It remains unchanged.
1953 I don't have this edition.
1956 I see the addition of a FPN at 2333 that says, "Conductors run above the top level of a window are considered out of reach from that window.
1959 Re-numbering moves the first reference and the FPN to 230-24(c). The second reference under, "exposed to weather" disappears.
1962 Unchanged
1965 I don't have this edition.
1968 Unchanged
1971 Unchanged
1974-1977 I don't have these.
1981 The bit about conductors above windows being out of reach is no longer in fine print.
1984-1987 I don't have these.
1990 Renumbered to 230-9. Significantly reworded to apply to open conductors or those without an overall outer jacket. What had been a FPN is changed to an exception.
1993 Changes from "windows" to "windows that are designed to be opened."
1996 I can't find the book !?!
1999 Adds a section about vertical clearances that refers back to 230-24(b)
2005 Well, you know what it says now.
- Jim K
I can't find the original appearance of this requirement, but I've traced it as far back as the 1947 edition. It appears in two places, the first is under the heading "Service Drop Conductors."
Section 2322(c) Clearance from Buildings. Conductors shall have a clearance of not less than 36 inches from windows, doors, porches, fire escapes, or similar locations.
The second is under the heading, "Service Conductors on or in Buildings."
2333. Individual Conductors Exposed to Weather . . . Weatherproof conductors on exterior of buildings shall have a clearance from the ground of not less than 8 feet, and a clearance from windows, doors, porches, etc., or not less than 3 feet."
1951 It remains unchanged.
1953 I don't have this edition.
1956 I see the addition of a FPN at 2333 that says, "Conductors run above the top level of a window are considered out of reach from that window.
1959 Re-numbering moves the first reference and the FPN to 230-24(c). The second reference under, "exposed to weather" disappears.
1962 Unchanged
1965 I don't have this edition.
1968 Unchanged
1971 Unchanged
1974-1977 I don't have these.
1981 The bit about conductors above windows being out of reach is no longer in fine print.
1984-1987 I don't have these.
1990 Renumbered to 230-9. Significantly reworded to apply to open conductors or those without an overall outer jacket. What had been a FPN is changed to an exception.
1993 Changes from "windows" to "windows that are designed to be opened."
1996 I can't find the book !?!
1999 Adds a section about vertical clearances that refers back to 230-24(b)
2005 Well, you know what it says now.
- Jim K
Re: NEC - ART 230 Clearance Intent
Jim , Thanks for the cycle search. 1947 gives me a better start to lok for the ROP-ROC's.
I've been all throught the touching ,or ladder placement conversations already. I want to see the real reason this put in the code. The ROP-ROC's can clearify codes better sometimes I feel.
Greg
Jim , Thanks for the cycle search. 1947 gives me a better start to lok for the ROP-ROC's.
I've been all throught the touching ,or ladder placement conversations already. I want to see the real reason this put in the code. The ROP-ROC's can clearify codes better sometimes I feel.
Greg
- Location
- Massachusetts
Re: NEC - ART 230 Clearance Intent
Greg I am curious why it matters?
It seems like a reasonable and prudent code section.
Greg I am curious why it matters?
It seems like a reasonable and prudent code section.
pierre
Senior Member
- Location
- Westchester County, New York
Re: NEC - ART 230 Clearance Intent
Jim
That is very good, I like what you did for the history.
Now, can you do that for the entire code, starting at Art 90 - one for each day... sort of a new thread tittled - code history by Jim.
P.S. I will send you the books for the years you are missing
[ October 27, 2005, 07:23 AM: Message edited by: pierre ]
Jim
That is very good, I like what you did for the history.
Now, can you do that for the entire code, starting at Art 90 - one for each day... sort of a new thread tittled - code history by Jim.
P.S. I will send you the books for the years you are missing
[ October 27, 2005, 07:23 AM: Message edited by: pierre ]
jim k
Member
- Location
- Northwestern Oregon
Re: NEC - ART 230 Clearance Intent
BTW, I don't need any more NECs, but if you or anyone out there has one, I'm in the market for a 1983 CABO.
- Jim K
Hmm. This could take a while . . .Originally posted by pierre:
Jim
That is very good, I like what you did for the history.
Now, can you do that for the entire code, starting at Art 90 - one for each day... sort of a new thread tittled - code history by Jim.
P.S. I will send you the books for the years you are missing
BTW, I don't need any more NECs, but if you or anyone out there has one, I'm in the market for a 1983 CABO.
- Jim K
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