Can you strip romex and use changeover with small length of conduit

Hoodood

Member
Location
nyc
Occupation
Electrical foreman
That's what we thought until another inspector checked for the same. We learned to comply and he smiled while passing it.
 

goldstar

Senior Member
Location
New Jersey
Occupation
Electrical Contractor
With what were all now paying for romex they should print the "THHN 600V" stuff required by article 310 like they did back in the day LOL.
BINGO !!! It's all about the $$$$$. A lot of these mfr's are on CMP's and always ask "If we do this what's in it for us"?
 

don_resqcapt19

Moderator
Staff member
Location
Illinois
Occupation
retired electrician
BINGO !!! It's all about the $$$$$. A lot of these mfr's are on CMP's and always ask "If we do this what's in it for us"?
The printing on the conductors of NM is not something that the NEC addresses...that is addressed by the organization that writes the product standard that applies to NM.

Also, there is no case where manufacturer's reps have more than one third the votes on a CMP and it takes a minimum of a 2/3s majority to create a code change.
 

goldstar

Senior Member
Location
New Jersey
Occupation
Electrical Contractor
Also, there is no case where manufacturer's reps have more than one third the votes on a CMP and it takes a minimum of a 2/3s majority to create a code change.
Interesting. I didn’t know that. But, even if that’s the case I don’t believe the CMP’s can compel a mfr. to make a product or change its characteristics if there’s nothing in it for them. For example, if they started marking the wires in NM cable or made them THHN-2 that would mean that EC’s would start using these as conductors inside ab AC whip instead of buying rolls of single conductor wire. Good for the EC but not the mfr. IMHO.
 

don_resqcapt19

Moderator
Staff member
Location
Illinois
Occupation
retired electrician
Interesting. I didn’t know that. But, even if that’s the case I don’t believe the CMP’s can compel a mfr. to make a product or change its characteristics if there’s nothing in it for them. For example, if they started marking the wires in NM cable or made them THHN-2 that would mean that EC’s would start using these as conductors inside ab AC whip instead of buying rolls of single conductor wire. Good for the EC but not the mfr. IMHO.
The ANSI rules that apply to consensus standards like the NEC is where the no more than one third of the group members can be from the say interest category.

As far as the code driving manufacturers that does happen as once there is an enforceable code rule that manufacturers have to supply a product that meets that code rule. Typically such code rules have a future effective date to make it possible for the product standards and the manufacturers to catch up with the code.
 

goldstar

Senior Member
Location
New Jersey
Occupation
Electrical Contractor
The ANSI rules that apply to consensus standards like the NEC is where the no more than one third of the group members can be from the say interest category.

As far as the code driving manufacturers that does happen as once there is an enforceable code rule that manufacturers have to supply a product that meets that code rule. Typically such code rules have a future effective date to make it possible for the product standards and the manufacturers to catch up with the code.
Thanks for the explanation Don.
 

tortuga

Code Historian
Location
Oregon
Occupation
Electrical Design
As far as the code driving manufacturers that does happen as once there is an enforceable code rule that manufacturers have to supply a product that meets that code rule.
Thats why its good to have 'construction specifications' as part of the code.
The code section to change would be 334.104 all one would need to do is add a sentence word it similar to 336.104.

If anyone is really interested there is free online access to UL 719:

Section 4.4.1 discusses the insulation allowed for NM cable, its basically three options, to summarize they are:
4.4.1(a) THHN
4.4.1(b)(1) TW with insulation that complies with dry location THHN.
4.4.1(b)(2) allows mixtures of plastics other than PVC, provided it behaves like THHN.
They also seem to modify the tensile strength and elongation test for the wire.

So the wires in NM are basically like a light beer or diet soda, not 100% the real thing and should not be treated as such in conduit.
I think the same can go for any MC cable that contains the ribbon that says 'THHN' but its not printed on the conductors.
 
Top