Enclosure under Meter Stack

Status
Not open for further replies.

LarryFine

Master Electrician Electric Contractor Richmond VA
Location
Henrico County, VA
Occupation
Electrical Contractor
smile_popcorn.gif
 

LarryFine

Master Electrician Electric Contractor Richmond VA
Location
Henrico County, VA
Occupation
Electrical Contractor
We recently had a discussion about a pair of panels that were only 1/8" different in depth.

There were mentions of using strut or washers to match front surfaces of different depths.

Does being side-by-side vs being above-and-below really make that much of a difference?
 

augie47

Moderator
Staff member
Location
Tennessee
Occupation
State Electrical Inspector (Retired)
110.26 (A)(3) allows other "associated equipment" to extend up to 6" beyond the front. I've seent hat rule used many times in regard to gutters/wireways.
 

LT Sparky

Member
Location
Farwell, TX, United States
Occupation
Estimator Project Manager
We recently had a discussion about a pair of panels that were only 1/8" different in depth.

There were mentions of using strut or washers to match front surfaces of different depths.

Does being side-by-side vs being above-and-below really make that much of a difference?
Thats the thread that got me thinking it possibly could be a problem.
 

Fred B

Senior Member
Location
Upstate, NY
Occupation
Electrician
I'm going to through a wrench into this. The allowance is specifically uses "associated equipment". A raceway is not equipment based on the artical 100 definition.
Equipment. A general term, including fittings, devices, appliances, luminaries, apparatus, machinery, and the like used as a part of, or in connection with, an electrical installation.
if you look at definition of a raceway it never uses the term "equipment" .
In my opinion you need to find a different article to support that installation other than 110.26.
 

EC Dan

Senior Member
Location
Florida
Occupation
E&C Manager
I'm going to through a wrench into this. The allowance is specifically uses "associated equipment". A raceway is not equipment based on the artical 100 definition.
Equipment. A general term, including fittings, devices, appliances, luminaries, apparatus, machinery, and the like used as a part of, or in connection with, an electrical installation.
if you look at definition of a raceway it never uses the term "equipment" .
In my opinion you need to find a different article to support that installation other than 110.26.

I know this isn't "code enforceable" but this is the commentary for 110.26(A)(3) from the 2017 handbook:

This requirement allows the placement of a 12 inch × 12 inch wireway on the wall directly above or below a 6-inch-deep panelboard without encroaching on the working space. The requirement prohibits large differences in depth of equipment below or above other equipment that specifically requires working space. Freestanding, dry-type transformers are not permitted to be installed where they extend into the work space for a wall-mounted panelboard. This compromises clear access to the panelboard.
 

Fred B

Senior Member
Location
Upstate, NY
Occupation
Electrician
I know this isn't "code enforceable" but this is the commentary for 110.26(A)(3) from the 2017 handbook:
Write a code proposal to include raceways and enclosures into the language of the allowance in 110.26. Then enforceable, otherwise a gung ho EI will jam you up for it because of a strict reading of that section. Common practice doesn't make compliance.
"and the like used as a part of, or in connection with, an electrical installation."
Key word as to "the like" what is the reference referring back to? All the items proceeding the "and the like". Are any of those any type of raceway or enclosure?
Every reference links a raceway, enclosure, cabinet, boxes, as all means to support or enclose "equipment", not as equipment.

"In connection with", is a cabinet connected to an electrical system? Maybe by means of EGC. So if using that logic a non metallic enclosure or raceway then doesn't comply.

Not saying that I see a safety issue directly from a 2 inch difference, but 110.26 does not support it.
 

wwhitney

Senior Member
Location
Berkeley, CA
Occupation
Retired
I'm going to through a wrench into this. The allowance is specifically uses "associated equipment". A raceway is not equipment based on the artical 100 definition.
Equipment. A general term, including fittings, devices, appliances, luminaries, apparatus, machinery, and the like used as a part of, or in connection with, an electrical installation.
I'll disagree, on the basis that apparatus is not an NEC defined term, and it can easily be read to include raceways.

Cheers, Wayne
 

Fred B

Senior Member
Location
Upstate, NY
Occupation
Electrician
Is a gutter a raceway?
Definition of gutter and it's use is listed in Article 366. According to 366.2 an auxiliary gutter is an enclosure used to supplement wiring spaces at meter centers, distribution centers, switchgear, switchboards, and similar points of wiring systems.
Think it falls into all gutters are raceways but not all raceways are gutters.
 

petersonra

Senior Member
Location
Northern illinois
Occupation
engineer
Definition of gutter and it's use is listed in Article 366. According to 366.2 an auxiliary gutter is an enclosure used to supplement wiring spaces at meter centers, distribution centers, switchgear, switchboards, and similar points of wiring systems.
Think it falls into all gutters are raceways but not all raceways are gutters.
By definition it would appear a gutter is NOT a raceway but rather an enclosure.
 

EC Dan

Senior Member
Location
Florida
Occupation
E&C Manager
Here's what the handbook commentators have to say about it:

A wireway is a raceway in accordance with the definition of raceway in Article 100. Auxiliary gutters supplement enclosure wiring spaces and are not encompassed by the definition of raceway. Therefore, NEC® requirements that apply only to raceways do not apply to auxiliary gutters. An example of such a requirement is 230.7, which prohibits service conductors from being installed in a raceway with conductors that are not service conductors. This rule applies to wireways installed in accordance with Articles 376 and 378. However, an auxiliary gutter installed to supplement the wiring space of a service equipment enclosure is not a wireway and, therefore, is not subject to 230.7.
 

infinity

Moderator
Staff member
Location
New Jersey
Occupation
Journeyman Electrician
I think that the term gutter is incorrectly used in the OP and it's actually a wireway.
 
Status
Not open for further replies.
Top