Splice/Tap

[Alwayslearningelec]

Hello. Have Riser with 4#350's. Need to feed fuse cut out( same scenario as pic) with 4#8's at 6 floors from this riser. What's best way to transition from the #350 to #8.
I've sen something like the attached pic before, but not sure what they mean by set screw connector? I know what that is obviously for conduit but not in a box for a tap/splice. Don't you usually have something like an Ilsco tap splice or insulation piercing connector? BTW would this be considered a tap or splice? I think a tap.

 

[infinity]

Sounds like they want these for your tap conductors. You have to check that the range of the connector will work with both 350's and #8's if not you may need larger tap conductors. Personally I would not use these I would opt for a connector that can go over the riser conductors without cutting them at every tap point.

 

[iceworm]

... I've sen something like the attached pic before, but not sure what they mean by set screw connector? I know what that is obviously for conduit but not in a box for a tap/splice. ...

Probably Power Distribution Blocks - lots of manufacturers, Ilsco, Littlefuse, Marathon are a few. But they are big, maybe 6" x 3" per pole

As noted by Rob, Polaris taps are pretty good, but the range for 350kcmil only goes down to #6. And they tend to not be rated for fine strand.

I like these - 350kcmil to #10, double sided, rated for fine strand.
https://hubbellcdn.com/ohwassets/HCE/burndy/multiple-tap-connectors/burndy_unitap_catalog.pdf

I don't know about insulation piercing. As mentioned, for this application, sounds good - if the range is available

 

[Alwayslearningelec]

Thanks guys.