UL508MTR Exam question

[plcnoop]

Hi, sorry if this isn't the right part of the forum.

I am having some trouble with a question on the MTR exam with a specific question that's making me think I am not using the correct resource to answer.
I don't expect an answer to the question, obviously. I'm just wondering where to even look for this answer? I have the "UL Standard for Safety for Industrial Control Panels, UL 508A Third Edition, Dated April 24, 2018". I cannot find the answers to this anywhere in the document. I'm searching various terms like "LVLE" "intrinsically" among others and none of them are mentioned.


The question is as follows:

Q - Identify the four products that can be used in a UL Listed panel.

- A component that is not in Table 1 of Requirements for Components used in Industrial Control Panels (formerly Table SA 1.1), but is UL Listed for use in Industrial Control Equipment

- An unlisted component that is described in your procedure

- An unlisted component that is not procedure described, is not installed per Appendix B, or is not in a Class 2 or LVLE circuit

- A Recognized Component that is not in Table 1 of Requirements for Components used in Industrial Control Panels (formerly Table SA 1.1), but installed per Appendix B or in Class 2/LVLE circuits

- An intrinsically Safe Barrier

- A Recognized Component that is not in Table 1 of Requirements for Components used in Industrial Control Panels (formerly Table SA 1.1), but installed per Appendix B or in Class 2/LVLE circuits

- A Recognized Component that is in Table 1 of Requirements for Components used in Industrial Control Panels (formerly Table SA 1.1)

Thanks ahead of time for any help.

 

[petersonra]

Intrinsically safe barriers are specifically banned from ul508a panels, mostly. Search on the term barrier.

 

[jim dungar]

Is LVLE an acronym for low voltage low energy?

 

[plcnoop]

Intrinsically safe barriers are specifically banned from ul508a panels, mostly. Search on the term barrier.

Yep, I ended up finding this in "REQUIREMENTS FOR COMPONENTS USED IN INDUSTRIAL CONTROL PANELS October 21, 2019".

I must have got the question right because I got a 100% on the section.

I am mostly just a bit confused because some of these questions are not from the main UL 508 booklet. I was under the impression it would be entirely in that document.

 

[plcnoop]

Is LVLE an acronym for low voltage low energy?

It is, and shortly after posting here I realized my dumb butt did not include a dash in the full word, that's why I couldn't find it.

You have to search "low-voltage low energy" to find it.

 

[Macbeth]

Yep, I ended up finding this in "REQUIREMENTS FOR COMPONENTS USED IN INDUSTRIAL CONTROL PANELS October 21, 2019".

I must have got the question right because I got a 100% on the section.

I am mostly just a bit confused because some of these questions are not from the main UL 508 booklet. I was under the impression it would be entirely in that document.

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