- Location
- New Jersey
- Occupation
- Journeyman Electrician
How is the squeeze connector grounded?
SER cable in LB
- Thread starter flatlander
- Start date
- Status
How is the squeeze connector grounded?
goldstar
Senior Member
- Location
- New Jersey
- Occupation
- Electrical Contractor
Really Rob ??? Are we going to get that nit picky :slaphead: What are the chances of that squeeze connector becomming energized ? That's got to be a shot in a million !!!
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
Really Rob ??? Are we going to get that nit picky :slaphead: What are the chances of that squeeze connector becomming energized ? That's got to be a shot in a million !!!
Why do you think that retro boxes had the screws sunk into the side of the box
goldstar
Senior Member
- Location
- New Jersey
- Occupation
- Electrical Contractor
Agreed, those are metal parts. Shouldn't they be grounded as well ?Why do you think that retro boxes had the screws sunk into the side of the box
- Location
- New Jersey
- Occupation
- Journeyman Electrician
Why do you think that retro boxes had the screws sunk into the side of the box
That's exactly what came to mind and those screws would be in the box, not squeezing down on unprotected SEC's.
wwhitney
Senior Member
- Location
- Berkeley, CA
- Occupation
- Retired
Pardon my ignorance, is the connector pictured below what is being referred to? If so, I assume from the description that the setscrew side is inside the cabinet, with the male threads sticking out. So then wouldn't you put locknut on, securing it and grounding it? The PVC female adapter can then go onto the remaining threads.
Cheers, Wayne
Attachments
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
No because they are recessed in the little nubs in the box. The wire cannot come in contact with the screws
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
The connector is similar to what you are showing but there is a piece of pvc coming out of the panel with a fitting that is a pvc coupling on one end and has threads on the other end -- the connector screws into the threads
goldstar
Senior Member
- Location
- New Jersey
- Occupation
- Electrical Contractor
when was the last time you squeezed down so hard on and SEU squeeze connector that it pierced the jacket cut through the braid and cut into the XHHW insulation and shorted to the power wires .That's exactly what came to mind and those screws would be in the box, not squeezing down on unprotected SEC's.
wwhitney
Senior Member
- Location
- Berkeley, CA
- Occupation
- Retired
Thanks, that clarifies it.
It also means I retract my comments about the setup being compliant with 312.5, as the stripped end of the SE isn't secured to the meter pan.
Suppose instead a squeeze connector is used at the bottom of the meter pan, with the male threads on the outside of the meter pan. The male threads get a locknut and then a PVC female adapter, then a short PVC sleeve including an LB. That should satisfy 312.5 at the meter pan.
Would there be any need to secure the SE cable where it emerges from the far end of the sleeve? If not, that would eliminate the isolated metal connector that needs bonding.
Cheers, Wayne
goldstar
Senior Member
- Location
- New Jersey
- Occupation
- Electrical Contractor
In most cases there's hardly enough room in the meter pan to begin with. Installing it upside down would not only give you less room but would not be in accordance with mfr's recommendations. Good idea though.:huh:
I just called this on an inspection yesterday. The EC had turned a panel from one side of the wall to the other and brought the cables into the enclosure through a 2" PVC sleeve. The sheath did not pass all of the way through the sleeve, so I wrote the correction.
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
There is no need to secure the cable with a connector at the outer end of the pvc. 312.5 is clear in my mind on that. You just need a bushing and a staple 12" from where the cable exits the raceway (sleeve).
goldstar
Senior Member
- Location
- New Jersey
- Occupation
- Electrical Contractor
Also, let's remember the OP was asking about SER cable and not SEU as in my scenario.
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
How does that change things?
goldstar
Senior Member
- Location
- New Jersey
- Occupation
- Electrical Contractor
Not much. Just a fatter cable and the ground isn't braided around the other wires
flatlander
Senior Member
- Location
- Diamond bar, CA , Tempe AZ
Dunno
I was thinking because the SER cable is labeled with normal type conduit conductors such as XHHW THHN / THWN.
- Location
- Massachusetts
That has noting to do with it at all.
goldstar
Senior Member
- Location
- New Jersey
- Occupation
- Electrical Contractor
It has everything to do with my response to this one from Infinity
Sorry If I didn't make that clear. As to whether the squeeze connector should be grounded, yes I suppose it should. However, the chances of that connector ever becoming energized while sitting between floor joists or just inside a rim joist and just above a sill plate are a shot in a million. If I ever failed an inspection for that you'd here my screams all the way up there in Boston.
- Location
- Massachusetts
It has everything to do with my response to this one from Infinity Sorry If I didn't make that clear. As to whether the squeeze connector should be grounded, yes I suppose it should. However, the chances of that connector ever becoming energized while sitting between floor joists or just inside a rim joist and just above a sill plate are a shot in a million. If I ever failed an inspection for that you'd here my screams all the way up there in Boston.
IMO the NEC requires the connector to be grounded, regardless of the long shot, regardless of rim joists or how loud you would scream.
- Status