Armored cable trifurcate into three individual conductors installation

Status
Not open for further replies.

D!NNy

Senior Member
Location
San Luis Obispo
I have a 1 x 3/C 350 kcmil armored cable that pops out the ground and rises along a concrete structure. Eventually it is trifurcated into 3 individual conductors and terminates on dead break connections inside an enclosure.

Trifurcation happens at height less than 10' (armored cable and individual cables after trifurcation are accessible except the terminations at the dead break is inside the enclosure).

So question is, does these individual cables needs to be covered for any safety reasons? is there any code or standards applicable for this installation?

Thanks for the help in advance.
 

Smart $

Esteemed Member
Location
Ohio
The way I see it is, to know beforehand this cable is to be trifurcated (in simple terms, jacketing and armor to be removed) prior to entering an enclosure for deadbreak terminations, then whoever is requiring this action should be including other pertinent details: product information for the cable with conductors suitable for use as single conductors, or the wiring method that will be used from the cable jacket/armor termination to the dead-break enclosure, or location is supervised industrial where open wiring is permitted.
 

Julius Right

Senior Member
Occupation
Electrical Engineer Power Station Physical Design Retired
According to Table 300.5 MC cable is considered protected only under a building.
In other underground location it is considered unprotected.
It is permitted in underground location if it is identified for direct burial.[art 330.12]
According to art.320 type AC cable is permitted only in dry location.
In my opinion, you have to protect your cable up to 2.5m [8 ft] according to
NEC 2014 art.300.5 (D) Protection from Damage (1) Emerging from Grade.
Supported on a building has to be 3 ft clearance from the access surface.
[if it is not protected] art.225.18.
 
Status
Not open for further replies.
Top