312.6 deflection of conductors

[Jpflex]

i get the same values as my nec book for wire defection for 312.6 A but not 312.6 B in regard to the books illustration

 

[Jpflex]

312 6 A values

 

[Jpflex]

312.6A values ok

 

[Jpflex]

312.6 B2 values
This table shall apply to conductors DOES ENTER OR LEAVE THE ENCLOSURE OPPOSITE ITS TERMINAL

Some of these nec value examples appear WRONG

 

[Jpflex]

Table 312.6A used where conductor does NOT enter or leave the enclosure through the eall opposite its terminal

 

[Jpflex]

Table 312.7B2B

Used where conductors DO leave or enter the enclosure through the opposite wall of the terminal

 

[Jpflex]

312.6 B2 values
This table shall apply to conductors DOES ENTER OR LEAVE THE ENCLOSURE OPPOSITE ITS TERMINAL

Some of these nec value examples appear WRONG

According to the nec illustration the 4/O Neutral at the bottom of the illustration enters the wall of the enclosure OPPOSITE its termination and CORRECTLY says 7 inch space is needed


1) However, it incorectly says that the top 4/0 M paralled conductors T1 should have a space of 7 and 1/2 inches.

However the table for this is 312.6A and should say 6 inches for these parall feeders marked as M?

2) The book again incorrectly says T3 at right side for BC3 at 1 AWG must be 4 and 1/2 inches instead of 3 inches?

 

[Jpflex]

What is the correct answer here?

In case you cannot see the pic clearly for value 1 dispute, a parallel set of 4/0 feeders enter the top cabinet and terminate on lugs on the same side of the enclosure wall (top of enclosure shown)

Therefore we use table 312.6 A

A 4/0 parallel conductor if 2 wires per terminal (for parallel?) Shows 6 inches os space needed but not 7 abd 1/2 inches on the second values shown by nec unless they meant terminating the wires at the bottom as opposed to what the picture shows?

 

[augie47]

ON T1, the fact that the conduit enters above the side gutter you can use the exception allowing 6A

On T-3 the conductors enter the opposite wall so 6B is correct