Ridged metal conduit sleeve for SER feeder

[Knuckle Dragger]

Hi All,
I am installing a new sub-panel and 2/3 SER feeder to a third floor location. I found a preexisting 1.5 ridged metal conduit sleeve to runs from the basement to third floor. The conduit will have fittings with bushings on each end with no connection to either the main or sub-panel.
I typically would use PVC in an application like this.
My concern should the ridge metal conduit sleeve be grounded?
I could install a large metal j-box strip on one end and run the SER through that first to bond it if necessary.

 

[Sierrasparky]

As a conduit yes,
As a sleeve no

If there is a likelihood of becoming energized. YES

 

[infinity]

If it qualifies as a sleeve under 250.86 then connection to an EGC is not required.

250.86 Other Conductor Enclosures and Raceways. Except as permitted by 250.112(I), metal enclosures and race-
ways for other than service conductors shall be connected to the equipment grounding conductor.
Exception No. 1: Metal enclosures and raceways for conductors added to existing installations of open wire, knob-
and-tube wiring, and nonmetallic-sheathed cable shall not be required to be connected to the equipment grounding
conductor where these enclosures or wiring methods comply with (1) through (4) as follows:
(1) Do not provide an equipment ground
(2) Are in runs of less than 7.5 m (25 ft)
(3) Are free from probable contact with ground, grounded
metal, metal lath, or other conductive material
(4) Are guarded against contact by persons
Exception No. 2: Short sections of metal enclosures or
raceways used to provide support or protection of cable
assemblies from physical damage shall not be required to
be connected to the equipment grounding conductor.
Exception No. 3: A metal elbow shall not be required to be
connected to the equipment grounding conductor where it
is installed in a run of nonmetallic raceway and is isolated
from possible contact by a minimum cover of 450 mm
(18 in.) to any part of the elbow or is encased in not less
than 50 mm (2 in.) of concrete.

 

[electrofelon]

If it qualifies as a sleeve under 250.86 then connection to an EGC is not required.

I frequently see commercial rooftop pv systems with emt, or rgs across walkways used as a sleeve for pv wire (s). We have been bonding them with bonding bushings. So this is not required?

 

[Knuckle Dragger]

To all that responded,
Thank you!!

 

[goldstar]

If it qualifies as a sleeve under 250.86 then connection to an EGC is not required.

Just curious, what is considered a short section of metal pipe in 250.86 Ex 2 ?

 

[jumper]

Just curious, what is considered a short section of metal pipe in 250.86 Ex 2 ?

Whatever your AHJ accepts.

 

[goldstar]

Whatever your AHJ accepts.

That leaves a lot to the imagination doesn't it ?

 

[jumper]

That leaves a lot to the imagination doesn't it ?

Yep, like subject to physical damage and such. NFPA leaves it up to each AHJ to decide what is acceptable.

 

[goldstar]

Yep, like subject to physical damage and such. NFPA leaves it up to each AHJ to decide what is acceptable.

In your opinion, should be 0P make sure that sleeve is grounded? Just in case his AHJ has a quirk and decides that it's not a short piece.

 

[jumper]

In your opinion, should be 0P make sure that sleeve is grounded? Just in case his AHJ has a quirk and decides that it's not a short piece.

That is way to subjective of a question for me to offer an opinion to the OP.

Since I not know all the variables, I could easily get slammed for saying yes or no.

I will pass.

 

[goldstar]

That is way to subjective of a question for me to offer an opinion to the OP.

Since I not know all the variables, I could easily get slammed for saying yes or no.

I will pass.

OK no problem. I was just asking for an opinion. No one's answers here in this forum are 100% correct and carved in granite. No one is looking to hang you out to dry