codequestion
Banned
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- MD, USA
Are type Nonmetallic Sheathed Cable NM cable with THWN coating be used on type IIB building firefighter dormitory one story building per NEC 2014?
Type NM Cable
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jumper
Senior Member
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- 3 Hr 2 Min from Winged Horses
Look at 334.10(3).
al hildenbrand
Senior Member
- Location
- Minnesota
- Occupation
- Electrical Contractor, Electrical Consultant, Electrical Engineer
"THWN coating". . . that's a new one on me. Do you have a link, possibly?
codequestion
Banned
- Location
- MD, USA
Ignore part THWN coating found on drawings not sure what is that about.
Going back, NEC 2014, Article 334.10(3) says permitted types III, IV and V. However I am confused with scenario in my original poster in mind 334.10(5) says types I and II is ok as well?
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jumper
Senior Member
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- 3 Hr 2 Min from Winged Horses
No, no link allowed. All we need to know is that NM-B has 90C conductors. No one ever should know what is really inside. Like the recipe for Coca Cola...it’s a secret....
jumper
Senior Member
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- 3 Hr 2 Min from Winged Horses
Yeah, if you want to install conduit and then pull cable. Kinda defeats the whole purpose of using cable. The raceway/conduit has to be a type permitted for the type construction also.
(5) Types I and II construction where installed within raceways permitted to be installed in Types I and II construction.
codequestion
Banned
- Location
- MD, USA
Exactly what kind of raceways would be permitted with NM cables for Construction Types I and II? Also, does the article still apply if it has type II and then B at end same as type II?
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al hildenbrand
Senior Member
- Location
- Minnesota
- Occupation
- Electrical Contractor, Electrical Consultant, Electrical Engineer
No, no link allowed. All we need to know is that NM-B has 90C conductors. No one ever should know what is really inside. Like the recipe for Coca Cola...it’s a secret....
This is how conspiracy theories begin. . .
jumper
Senior Member
- Location
- 3 Hr 2 Min from Winged Horses
Annex E has the types of construction.
Types I and II have the longest fire ratings.
I am not well versed on all these types and if unsure, ask the inspector or boss.
Off the top of my head I would say for IIB, one story, RMC, IMC, EMT, FMC, AC, MC, possibly PVC in non assembly areas, prolly more IDK.
The B in IIB does not change 334.10.
jumper
Senior Member
- Location
- 3 Hr 2 Min from Winged Horses
Yeah well, pretty sure that ActionMan started a rumor that I am already half nuts so I have little to lose.
I think it began with something about GFCIs inside PVC boxes being buried in backyards somewhere in Tennessee...:angel:
- Occupation
- Licensed Electrician
I think it would be a scary thing to go looking for what's buried in back yards in Tennessee.
jumper
Senior Member
- Location
- 3 Hr 2 Min from Winged Horses
al hildenbrand
Senior Member
- Location
- Minnesota
- Occupation
- Electrical Contractor, Electrical Consultant, Electrical Engineer
[LAUGHING]Ahh. Thank you. With this morning's coffee, you've provided me a truly enjoyable laugh.[/LAUGHING]
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