NEC 2023 - 724.40 Class 1 Circuit Definition

[k-rag]

I'm teaching a class right now on 725 from the NEC2020, and I just did a code update class for NEC2023.

I noticed a significant change to the wording/layout, and I was wondering if anyone else noticed. Unless I'm missing something, the actual definition of a Class 1 now seems to only include power limited circuits.

The 2023 edition made several organizational changes that make a lot of sense; one of which was to make 724 its own article related to class 1 circuits, and leave 725 to include only class 2 and class 3. I get all that, but when I was studying 724, I noticed that the wording defining a class 1 circuit seems to have changed.

In NEC 2020:
725.41(A) defines a Class 1 Power-Limited Circuit, and limits it to 30V and 1000VA.
It keeps Class 1 circuits in general distinct from Class 1 Power-Limited.
Then 725.41(B) Provides a limit of 600V to other Class 1 signaling circuits.

...
not so with NEC 2023 if I'm reading it right.
724.40 seems to limit all Class 1 circuits to 30V and 1000VA.

There are some specific allowances in 724.40(B), but nothing seems to indicate to me that exceeding 30V is permitted at all.

Anybody else notice this?
Am I missing something?

 

[don_resqcapt19]

You are not missing anything. Anything that was a Class 1 circuit exceeding 30 volts in the previous code is now simply a circuit covered by the rules in Chapters 1 through 4.

 

[k-rag]

Thank you for the reply! I thought that may be the case, but I found it odd that the text book I have specifically dealing with the 2023 changes doesn't even mention it.