Alwayslearningelec
Senior Member
- Location
- NJ
- Occupation
- Estimator
Is there a code section that lists areas that are considered hazardous locations? I can't seem to find specifics in code book. Thank you
Haz. Locations
- Thread starter Alwayslearningelec
- Start date
- Status
petersonra
Senior Member
- Location
- Northern illinois
- Occupation
- engineer
500.5(B) is the closest to this. But it is pretty vague.
A lot of what goes on in this area of engineering seems to be tribal knowledge and bad things happening over the years as much as anything. Eventually at least some of the tribal knowledge gets written down in the form of various standards, some of which are listed in the information notes in 500.4(B).
- Location
- Illinois
- Occupation
- retired electrician
Other than the specific occupancies in Articles 511 through 516, the NEC does not define the classified areas.
You need to have someone provide the area classification documentation that is required by 500.4. The Informational Notes following that section give guidance on documents and standards that are used in the creation of the area classification document.
In general the NEC only tells you how to wire the areas after they have been classified, with the exception of the specific occupancies, and even there, there may be area classification documentation that shows things differently from what is in those articles.
You need to have someone provide the area classification documentation that is required by 500.4. The Informational Notes following that section give guidance on documents and standards that are used in the creation of the area classification document.
In general the NEC only tells you how to wire the areas after they have been classified, with the exception of the specific occupancies, and even there, there may be area classification documentation that shows things differently from what is in those articles.
- Location
- New Jersey
- Occupation
- Journeyman Electrician
What is the location you're trying to find?
- Location
- Mission Viejo, CA
- Occupation
- Professional Electrical Engineer
The NEC is not a “design specification or instruction manual”; thus says Section 90.1 - of course there is content of both types throughout the NEC, but it is often incomplete. Both of the first two replys have good material, but it depends on which NEC Edition Section 500.4 or 500.4(B) contains the reference material.
I recommend a thorough understanding of NFPA 497, including its annexes, as a good start to begin with if electrical area classification wiII be a common activity in your career. Otherwise, leave it to those more experienced.
I recommend a thorough understanding of NFPA 497, including its annexes, as a good start to begin with if electrical area classification wiII be a common activity in your career. Otherwise, leave it to those more experienced.
- Status