When to use Stranded insted of Solid Service bonding

[Greenlantern]

Is there something in the code book that states after a curtain wire size if going through any wire way that you need to use stranded wire for grounding and bonding? I did a service and used #8 solid for my bonding and grounding from my meter housing to my Panel. I was told that after a curtain wire size it needed to be stranded. But was not told what code reference to use. Any help.

 

[jumper]

Code accepts both for grounding, any size. 250.62

Conductors in raceways max at #10 solid. 310.106.(C)

 

[infinity]

I've never used solid for GEC's or bonding jumpers. I've heard of guys running #6 or #4 solid but I just don't get it.

 

[Dennis Alwon]

I know a wireway is a raceway but it seems ridiculous to call someone on 310.106

 

[jumper]

I've never used solid for GEC's or bonding jumpers. I've heard of guys running #6 or #4 solid but I just don't get it.

Quite common in resi, not so much in commercial IME.

 

[infinity]

Quite common in resi, not so much in commercial IME.

Around just about everyone uses stranded even in residential.

 

[Adamjamma]

if you are running in conduits, doesnt it make sense to use stranded even if you are using 16 guage wire? Much less larger sizes? So they bend in the bends rather than scratch off the insulation?

Or is there a requirement to use solid at certain sizes?

 

[jumper]

Or is there a requirement to use solid at certain sizes?

The NEC never mandates solid.

 

[Adamjamma]

Thank You.

 

[infinity]

The NEC never mandates solid.

I think they do for pools.

 

[jumper]

I think they do for pools.

As soon as I wrote it I knew I was regret saying “never”.:slaphead:

In general, looking at basic wiring methods in Chapters 1-4, solid wire conductors are not required per the NEC.

Better?

 

[infinity]

As soon as I wrote it I knew I was regret saying “never”.:slaphead:

In general, looking at basic wiring methods in Chapters 1-4, solid wire conductors are not required per the NEC.

Better?

 

[Dennis Alwon]

Tha main reason for not using solid, except for pools is because of what Adam wrote. The wire would have difficulty in the bends of the conduit.

 

[jumper]

The wire would have difficulty in the bends of the conduit.

Do I get to nit pick this sentence?




Just asking....

 

[tom baker]

For the GEC, if you need to repair it, with solid, there may not be a compression crimp connector.
I worked in an office building once owned by the POCO, some of the lighting ckts were run in 8 AWG solid in conduit. Tough to pull out. Use stranded....

 

[jeff48356]

In Tennessee, they use solid. In Michigan, we use stranded. Not sure why that is. Local codes?

 

[jumper]

In Tennessee, they use solid. In Michigan, we use stranded. Not sure why that is. Local codes?

Or just local customs. Both methods are fine per NEC.