junction box terminations

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junction box terminations

This attachment will show a typical low voltage junction box & terminations. The rule followed is no more than 2 per terminal.
Look at terminal 9 you can see 3 shields terminating which is taboo. I know I've seen it in the NEC but now can't find it.
 

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  • J-BOX.jpg
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110.14( A) Terminals. Connection of conductors to terminal parts shall ensure a thoroughly good connection without damaging the conductors and shall be made by means of pressure connectors (including set-screw type), solder lugs, or splices to flexible leads. Connection by means of wire-binding screws or studs and nuts that have upturned lugs or the equivalent shall be permitted for 10 AWG or smaller conductors.Terminals for more than one conductor and terminals used to connect aluminum shall be so identified.
Click to expand...

You will have to look at the manufacturer's information as some terminal blocks are suitable for use with more than one conductor per terminal point.
 
don_resqcapt19 said:

You will have to look at the manufacturer's information as some terminal blocks are suitable for use with more than one conductor per terminal point.
Click to expand...
And if the terminal block is internal to the equipment and not used for connecting field wiring, then the NEC might not have much to say about it in the first place.
 
Most terminal blocks come with a chart that tells you how many conductors can be put on each terminal.

Here is an AB chart of such things. The 1492-J70 allows for (5) #10 wires on a single terminal.
 

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