History of 240.24 (D) or ( E)

[Sierrasparky]

Does anyone know the history of 240.24 (D) or ( E).
When it became Code.

 

[Volta]

Well, here iare some samples:

...
b. Must not be placed in the immediate vicinity of easily ignitible stuff or where exposed to inflammable gases or dust or to flyings of combustible material.
When the occupancy of a building is such that switches, cut-outs, etc., cannot be located so as not to be exposed to dust or flyings of combustible material they must be enclosed in approved dustproof cabinets with self-closing doors, except oil switches and circuit breakers which have dusttight casings.
c. Must, when exposed to dampness, either be enclosed in a moisture-proof box or mounted on porcelain knobs. The cover of the box must be so made that no moisture which may collect on the top or sides of the box can enter it.

Automatic Cutouts.
c. Must be in plain sight, or enclosed in an approved cabinet, and readily accessible. They must not be placed in the canopies or shells of fixtures. Link fuses may be used only when mounted on approved slate or marble bases and must be enclosed in dust-tight, fire-proofed cabinets, except on switchboards.

Location in Premises.
Overcurrent devices shall be located where they will be:
a. Readily accessible, except as provided in section 2372 for service equipment and section 3650 for busways.
b. Not exposed to mechanical injury.
c. Not in the vicinity of easily ignitible material.

First year for closets:

...
(d) Not in Vicinity of Easily Ignitible Material. Overcurrent devices shall not be located in the vicinity of easily ignitible material such as in clothes closets.

First year for bathrooms:

...
(e) Not located in bathrooms. In dwelling units and guest rooms of hotels and motels, branch-circuit overcurrent devices shall not be located in bathrooms as defined in Section 210-8.

 

[kwired]

Originally Posted by NEC 1909 17. Switches, Cut-outs, Circuit-Breakers, Etc.
...
b. Must not be placed in the immediate vicinity of easily ignitible stuff or where exposed to inflammable gases or dust or to flyings of combustible material.
When the occupancy of a building is such that switches, cut-outs, etc., cannot be located so as not to be exposed to dust or flyings of combustible material they must be enclosed in approved dustproof cabinets with self-closing doors, except oil switches and circuit breakers which have dusttight casings.
c. Must, when exposed to dampness, either be enclosed in a moisture-proof box or mounted on porcelain knobs. The cover of the box must be so made that no moisture which may collect on the top or sides of the box can enter it

.



Can you imagine NEC wording something like that today - "vicinity of easily ignitible stuff".

 

[GoldDigger]

.



Can you imagine NEC wording something like that today - "vicinity of easily ignitible stuff".

Sounds perfectly clear to me. But way too easy.

 

[kwired]

Sounds perfectly clear to me. But way too easy.

I have no problem with it either, but it is too simple for attorneys should they need to be involved:happyyes: