Chapter 9 Table 8

[guschash]

In table 8 columns where it has Quantity they have quantity 1 and quantity 7 for wire size from 18 wag to #8, then it jumps to just quantity 7 . Why? I need to know the property of just one number 4. Just trying to understand how to use this table. thank you.

 

[LarryFine]

Could it be conductor strands?

 

[infinity]

Yes that is the number of strands. Above that in the table is says Stranding.

 

[Dennis Alwon]

If you look at #12 i comes in either a sold- one strand or stranded which has 7 smaller wires.

Notice the conductors over #8. None of them comes in one sold conductor other than those used for grounding or grounding electrode conductor.-- you wouldn't be able to bend it much if it did. #8 is the last size that is solid but even that is not used often. The NEC doesn't even allow solid wires in a conduit over #10 except in a few cases.

 

[guschash]

Thank you. I notice it says Direct current resistance . Where would I A/C current resistance ?

 

[augie47]

310.106 limits the use of solid conductors in a raceway to #8 & smaller thus limitimg the need to knwo cilmil on solid conductors larger than #8..

 

[ggunn]

Thank you. I notice it says Direct current resistance . Where would I A/C current resistance ?

Table 9 on the next page.