Cable Splices in a Pull Box

[FaradayFF]

Greetings,
Does NEC require compression type connectors(splices) to have UL486D rating(be waterproof) when the splices are made in outdoor, underground pull box?
Thanks,
EE

 

[don_resqcapt19]

It does for handholes in 300.14(C), but I am not aware of a similar rule for manholes. Not sure if you are working with a manhole or handhole.

The reference should be 314.30(C).

 

[FaradayFF]

It does for handholes in 300.14(C), but I am not aware of a similar rule for manholes. Not sure if you are working with a manhole or handhole.

Are there any vendor you could recommend? It seems like most compression/crimp type connectors are for dry locations only, I have yet to find one that is watertight and UL 486D rated for insulated power cables.

Thank you,
EE

 

[don_resqcapt19]

Are there any vendor you could recommend? It seems like most compression/crimp type connectors are for dry locations only, I have yet to find one that is watertight and UL 486D rated for insulated power cables.

Thank you,
EE

I think I mislead you with my first answer...the rule in the code does not directly require the use of a "safety sealed wire connector". It only requires that the splice be suitable for wet locations. I also put down the wrong code section.
The correct section is below:

314.30(C) Enclosed Wiring.
All enclosed conductors and any splices or terminations, if present, shall be listed as suitable for wet locations.

My preference is compression butt splices with heat shrink. The actual connector, just like the conductor itself, remains in a dry location, the conductor protected by its insulation and the spice by the heat shrink Some heat shrink is only suitable for moisture protection and others are suitable for submerged locations. I don't believe that the combination of a compression connector and heat shrink is listed as "safety sealed wire connector".

If this is a multiconductor cable, I believe there are heat shrink splice kits for that application too.

 

[LarryFine]

The actual connector, just like the conductor itself, remains in a dry location, the conductor protected by its insulation and the spice by the heat shrink.

I must disagree with that assessment. Inside insulation, heat-shrink, or a raceway is not a location.

As in the NM-in-conduit discussions, the conductors are in whatever location their "container" is.

 

[don_resqcapt19]

I must disagree with that assessment. Inside insulation, heat-shrink, or a raceway is not a location.

As in the NM-in-conduit discussions, the conductors are in whatever location their "container" is.

My point is that the insulation keeps the water away from the actual metal conductor and that the heat shrink does exactly the same thing.

 

[FaradayFF]

Thanks, guys!