Patterns in the NEC

[George Stolz]

What are some patterns you have noticed in the NEC? For example, the raceway and cabling articles 3xx.2 are always definitions. Can you think of any more?

 

[iwire]

.1 scope

.10 permitted

.12 not permitted

.30 supporting

.104 conductors

I am sure they may be more or exceptions this being the NEC and all.

 

[Dennis Alwon]

.100 construction

In chapter 3 with raceways.

.24 & .26 are bends

.60 is grounding in those same sections

 

[K8MHZ]

.1 scope

.10 permitted

.12 not permitted

.30 supporting

.104 conductors

I am sure they may be more or exceptions this being the NEC and all.

I noticed that .12 was 'not permitted' for all the conduit, so that is usually where I start.

It would be nice to have a comprehensive list. Anything to make code surfin' a more enjoyable experience helps.

 

[Sierrasparky]

you should put out a cheat sheet

 

[raider1]

.100 construction

In chapter 3 with raceways.

.24 & .26 are bends

.60 is grounding in those same sections

The .100 changes when you get to Chapter 8. 800.100 is Cable and Primary Protector Bonding and Grounding.

Chris

 

[raider1]

If an Article has specific definitions applicable only to that Article the definitions will be located in .2 of that Article, but not all .2 sections are definitions.

Chris

 

[Dennis Alwon]

Rarely does every article follow thru on the code except in Chapter 3 for raceways and wiring methods. There will be many articles where the pattern changes. .01 is about the only one that is consistent throughout. .10 and .12 uses permitted and not permitted are not the same throughout only where they apply.

 

[rbalex]

For Chapters 2 through 8, the only two that are mandated according to the latest NEC Manual of Style are xxx.1 - Scope and xxx.2 - Definitions. That said, there has been remarkable progress in attempting to create a "Dewey decimal" system in other Chapters/Sections. For example Chapter 5, Arts 501 through 506 have been fairly well conformed.

 

[Ponchik]

it has a lot of gray areas. :lol:

 

[480sparky]

It's called Parallel Numbering as was introduced in the 2002 NEC.

 

[sandsnow]

I don't know if this is exactly what you're looking for

The use of the phrase "capable of being locked in the open position" has been standardized in many sections
410.141(B)
422.31(B)
424.19
440.14 ex 1
600.6(A)(2(3)
620.51(A) ex 1
620.53
620.55
I copied the above from IAEI changes book

 

[cadpoint]

...I copied the above from IAEI changes book

Quiz tommorrow ?




I've caught myself in the same question from reading, wasn't / isn't it sequential ?

 

[George Stolz]

Thanks a lot guys.

I am in the process of fine tuning an exam prep course, and realized it's kind of hard to explain how to find things quickly in the NEC. For me, forums force me to open the book and read to discuss a topic, which is my method. I wanted to cover basics, and knowing patterns would be a good start. Then I got to looking and saw fewer set-in-stone patterns to just about anything I had assumed was universal.

Keep 'em coming.

 

[tom baker]

it has a lot of gray areas. :lol:

Those would be the changes....in gray text boxes.

 

[marti smith]

.2 and .3 toss back and forth the label for other articles while ch.3 does not have this. The bulk of ch.3 has .6 as listing requirements.

 

[Ponchik]

Those would be the changes....in gray text boxes.

By "gray area" i meant that it is not very clear to understand.

 

[Twoskinsoneman]

it has a lot of gray areas. :lol:

Those would be the changes....in gray text boxes.

By "gray area" i meant that it is not very clear to understand.

One clever joke deserves another I guess

 

[Hv&Lv]

Here is an old style manual that may help...



http://www.nfpa.org/assets/files/PDF/NECSTYLEMAN03.pdf