Insulated multi tap connectors

[big john]

http://www.ihiconnectors.com/SCCR-UL508.htm

Interesting find, but UL508 is for control panels, so again it looks to me like this only applies to equipment used in a manufactured assembly. Which would make sense because we already know those need an SCCR. And those also all seem to be mounted components, so even in a control panel, I'm not sure that default 10kA rating would apply to tap or splice device.

 

[iwire]

Did you see the picture posted here a few weeks back of the former grow house where they cut into the RMC service mast from the attic with a rotary tool or similar and tapped into the service conductors? No "conventional" splice point is necessary to make a tap:happyno:

And your point here is what?

That does not change the fact that many POCOs do not allow splices regardless if you think it makes sense.

 

[electrofelon]

Many POCOs forbid splices in unmetered conductors. A splice could be a point of connection for a power theft.

The Seattle electrical code does not allow spliced service conductors as well.

Seems like there must be something in article 500 that forbids or restricts splices no?

 

[electrofelon]

That does not change the fact that many POCOs do not allow splices

But they must allow "taps"...... or do they want something like a bussed gutter or all sets run back to the service point?

 

[iwire]

But they must allow "taps"...... or do they want something like a bussed gutter or all sets run back to the service point?

I can't comment on specifics, I have learned on the forum some power companies do not allow 'splices', some do not allow conduit bodies, some allow junction boxes but require them to be equipped with places to put seal tags on them.

Bottom line for me is check the local power companies installation requirements before spending a dime on stock.

 

[kwired]

And your point here is what?

That does not change the fact that many POCOs do not allow splices regardless if you think it makes sense.

There was no point, it was supposed to be a little humor.

 

[dionysius]

In more than a few I have seen 500 kcmil cable 480/277 entering a box via a concrete wall. To accommodate a 90 degree turn the cable is cut, then spliced using a bare metal 90 deg screw connector, then taped up with plain insulation tape.

Per what I read here is this acceptable or not?????

 

[jumper]

To expand on the discussion, when are we NOT allowed to splice a conductor? Don't count situations where doing so results in fill violation, 240.21 violation, or 230.40/230.71 violation. I can only think of GEC (allowed if irreversible) and some article 680 egc situations. ARe there any others?

By 240.21 I assume you mean the tapping a tap part, but notice also 240.21(B)(4)(6)

(6) The tap conductors are continuous from end-to-end and
contain no splices.

 

[electrofelon]

By 240.21 I assume you mean the tapping a tap part, but notice also 240.21(B)(4)(6)

(6) The tap conductors are continuous from end-to-end and
contain no splices.

Oh cool, no I hadn't noticed that it specifically prohibited splices.

 

[dionysius]

In more than a few I have seen 500 kcmil cable 480/277 entering a box via a concrete wall. To accommodate a 90 degree turn the cable is cut, then spliced using a bare metal 90 deg screw connector, then taped up with plain insulation tape.

Per what I read here is this acceptable or not?????

Since no replies I consider that it is totally acceptable and per code. It has been in service for 15+ years and was inspected at install time. So most of this thread as I read it is overstating the pragmatic and required. Chime in if I am AFU.

 

[iwire]

In more than a few I have seen 500 kcmil cable 480/277 entering a box via a concrete wall. To accommodate a 90 degree turn the cable is cut, then spliced using a bare metal 90 deg screw connector, then taped up with plain insulation tape.

Per what I read here is this acceptable or not?????

Since no replies I consider that it is totally acceptable and per code. It has been in service for 15+ years and was inspected at install time. So most of this thread as I read it is overstating the pragmatic and required. Chime in if I am AFU.

I looked at your post but did not choose to comment because I have never heard of that method or seen it done.

As far as the code compliance of doing it that way it would come down to using listed parts in compliance with their listing and within a suitable code compliant enclosure of some type.

 

[jumper]

Oh cool, no I hadn't noticed that it specifically prohibited splices.

It was once on a practice code test I once took, so that is why I knew it.

 

[petersonra]

I got this response from Panduit.

Design engineering and our UL Liaison engineer stated the SCCR rating does not apply to our copper compression lugs because UL provides these parts with a 90 C temperature rating which means lugs are to be used at ampacities not greater than those for 90 C rated conductors.

 

[big john]

I don't see what a SCCR has to do with ampacity tables.....

 

[petersonra]

I don't see what a SCCR has to do with ampacity tables.....

or temperature ratings for that matter.

 

[petersonra]

I got an interesting and somewhat more helpful response from Polaris.

110.10 Circuit Impedance, Short-Circuit Current Ratings,
and Other Characteristics. The overcurrent protective
devices, the total impedance, the equipment shortcircuit
current ratings, and other characteristics of the
circuit to be protected shall be selected and coordinated to
permit the circuit protective devices used to clear a fault to
do so without extensive damage to the electrical equipment
of the circuit. This fault shall be assumed to be either between
two or more of the circuit conductors or between any
circuit conductor and the equipment grounding conductor(
s) permitted in 250.118. Listed equipment applied in
accordance with their listing shall be considered to meet the
requirements of this section.

So since UL does not currently have a SCCR requirement for connectors, the code does not require them to have one.

 

[kwired]

I don't see what a SCCR has to do with ampacity tables.....

or temperature ratings for that matter.

Talk about blowing smoke up you know where.