Types of raceways permitted on bottom of floor joists in basement?

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Sections 10 and 12 in most every article that pertains to material that we use in installations pertain to "uses permitted" and "uses not permitted" respectively. For example, Art. 330.10 would state the condition in which you could install MC cable and Art. 330.12 would state the condition in which you could not use it.
 
PaulMmn said:
Don't know about Michigan in particular, but I thought Romex had to be on running boards if on the bottom of joists. Too many people using the Romex as a closet rod!
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But when you run the NM though holes in the joists, it is better supported and works even better as a closet rod. Supporting it at 4.5' on the bottom doesn't work well as a closet rod.
 
don_resqcapt19 said:
But when you run the NM though holes in the joists, it is better supported and works even better as a closet rod. Supporting it at 4.5' on the bottom doesn't work well as a closet rod.
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Your in pipeland, EMT makes a even better closet rod. what would be scary is a heavily loaded pipe &being stingy with the straps. :eek:
 
norcal said:
Your in pipeland, EMT makes a even better closet rod. what would be scary is a heavily loaded pipe &being stingy with the straps. :eek:
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The requirement for EMT in dwellings is a about 100 miles away from where I am. Has to be over 6 units in a multifamily dwelling before our local code requires EMT.

My comment is only saying the code rule can result in a less safe installation than if it permitted the NM to be on the bottom of the joists without a runner board.
 
@Davisteam Was your question answered?
If not, try to be more specific in the details around your question.

What is below said floor joists? Basement? Crawlspace? Second floor?
Are we in a dwelling? Under a deck outside? Is it accessible to hand stuff off of like @PaulMmn mentioned - cause that happens a lot actually
 
AdamTeeScott said:
@Davisteam Was your question answered?
If not, try to be more specific in the details around your question.

What is below said floor joists? Basement? Crawlspace? Second floor?
Are we in a dwelling? Under a deck outside? Is it accessible to hand stuff off of like @PaulMmn mentioned - cause that happens a lot actually
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Other than the outside part of that, I don't believe the code cares.
 
I think you'd have to check every article in chapter 3 to see if the bottom of floor joists is under 'uses not permitted.' It won't say anything when you can do it.

AFAIK the article on NM is the only one that says anything, although I haven't checked all the other articles.
 
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