Commercial building: are the wire connector needed to be inside the junction box with cover
or they can be exposed?
All splicing of power conductors require an enclosure/box. Why would you think one would not be needed?
To splice/join #12 wires, I saw contractor use splice / wire plastic connector, at some locations, they put these connectors
inside a j-box, ... and some location, they don't.
Jumper, am not at home with my laptop, but, splices should be in a box or a raceway or a outlet box, right? Not just hanging in open, unless the splice is one of those totally sealed splices like we are allowed underground, right?
Commercial building: are the wire connector needed to be inside the junction box with cover
or they can be exposed?
Going to play devil's advocate here but could these be LV circuits? OP makes no mention of what kind of wire or anything regarding what he is talking about.
-Hal
This basically includes the "enclosure:"
https://www.homedepot.com/p/Tyco-Electronics-Romex-Splice-Kit-2-Wire-1-Clam-A22899-000/202204326
Benefit to these is if there is not enough slack to repair a cut cable with a box and wirenuts or when splicing to existing cable with insufficient slack.
Jumper does not consider those POS as worthy of attention. Listed or not.
Jumper does not consider those POS as worthy of attention. Listed or not.
I have used the tap version in crawl spaces for adding receptacles for known loads like wall-mounted TVs.That's certainly a valid opinion. I do consider them far more safe than backstabbed receptacles that I see (and repair) every day. They are actually a PITA to use, but a couple times, they really got the job done in the best way. I mostly do remodeling and repairs.
:lol:
Mobile homes and trailers are wired with devices that are much like that Tyco /TE Connectivity in-wall splice.
.