installing 90 degree c conductors to 60 degree c conductors

[elecmen]

Hi, I don't have my code book with me and am trying to find the code reference for installing 90 C to 60 c conductors and how it can't be done.

 

[luckylerado]

Hi, I don't have my code book with me and am trying to find the code reference for installing 90 C to 60 c conductors and how it can't be done.

The only code issues is that you may be stuck with the 60°C rating for the entire run depending on the lengths.

310.15(A)(2)

(2) Selection of Ampacity. Where more than one ampacity
applies for a given circuit length, the lowest value shall be used.
Exception: Where two different ampacities apply to adjacent
portions of a circuit, the higher ampacity shall be permitted
to be used beyond the point of transition, a distance equal to
3.0 m (10 ft) or 10 percent of the circuit length figured at the
higher ampacity, whichever is less.

 

[elecmen]

Hi, I don't have my code book with me and am trying to find the code reference for installing 90 C to 60 c conductors and how it can't be done.

Sorry I wrote this up wrong. I'm looking for the code reference that comes with every new luminaire that warns them about not hooking up 90c conductors to 60c

 

[iwire]

Sorry I wrote this up wrong. I'm looking for the code reference that comes with every new luminaire that warns them about not hooking up 90c conductors to 60c

You still seem a bit off.

Are you asking about the requirement that many light fixtures have that require the use of 90 C conductors?

If so the reference is the instructions and 110.3(B).

 

[elecmen]

You still seem a bit off.

Are you asking about the requirement that many light fixtures have that require the use of 90 C conductors?

If so the reference is the instructions and 110.3(B).

Yes more specifically that they can't be hooked up to 60c conductors. in homes built before 1985.For some reason I thought there was another code reference for this. Thanks

 

[Smart $]

Is this what you're looking for?

410.68 Feeder and Branch-Circuit Conductors and Ballasts.
Feeder and branch-circuit conductors within 75 mm
(3 in.) of a ballast, LED driver, power supply, or transformer
shall have an insulation temperature rating not
lower than 90°C (194°F), unless supplying a luminaire
marked as suitable for a different insulation temperature.

 

[Carultch]

Hi, I don't have my code book with me and am trying to find the code reference for installing 90 C to 60 c conductors and how it can't be done.

You can splice a 60C conductor to a 90C conductor, but you can only take credit for the portion of the wire with the smaller ampacity.

 

[iwire]

Is this what you're looking for?

Typically any fixture you buy including incandescent ones are marked requiring 90 c conductors

 

[Smart $]

Typically any fixture you buy including incandescent ones are marked requiring 90 c conductors

I'm aware of that... as is the OP'er apparently. I was just trying to provide an answer to his request for Code, since you already mentioned 110.3(B).