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#94169 - 07/12/05 10:53 PM chapter 9 conductor properties
watersparkfalls Offline
Member

Registered: 03/08/05
Posts: 210
Loc: Washington...Not DC
in table 8 wire awg 18-8 have two listings for ohm/1000 ft obviously solid and stranded which brings me off topic as to why there isn't two listings for #6 since nec requires #4 or larger to be stranded.

anyway is stranded wire less resistant than solid which would make it the first listng?

thanks h2o

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#94170 - 07/13/05 04:14 PM Re: chapter 9 conductor properties
John Crighton Offline
Member

Registered: 05/16/05
Posts: 172
Loc: Southern California
Since you haven't gotten any other replies...

Good question. The table entry for #6 shows only the stranded info, but I know for sure I can buy #6 bare solid for grounding.

You can tell solid vs. stranded by looking at the "quantity" column: 1 = solid, 7 = stranded (7 strands). In all cases, stranded wire has a slightly higher resistance per unit length than solid, so I assume the same would be true of #6.

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#94171 - 07/13/05 07:12 PM Re: chapter 9 conductor properties
watersparkfalls Offline
Member

Registered: 03/08/05
Posts: 210
Loc: Washington...Not DC
thanks john...
i never noticed the quantity columb b4.
nec you never stop learning....


h20

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#94172 - 07/17/05 01:53 PM Re: chapter 9 conductor properties
Ralpha494 Offline
Member

Registered: 05/19/04
Posts: 71
Loc: Pewaukee,WI,USA
When was the last time you installed 7 strand wire? Solid or 19 strand is all I've seen for 20 years.

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