UL listing

It appears to not have an NRTL label as a complete asembly
The yellow label says it was inspected by an non-NRTL.
The manufacturer's label only applies to the metal box, when it left the factory.
 
Agree. Over the years I have seen that "enclosure" label confuse a lot of folks. More than once I've heard " But look inspector, it says UL"
 
jim dungar said:
It appears to not have an NRTL label as a complete asembly
The yellow label says it was inspected by an non-NRTL.
The manufacturer's label only applies to the metal box, when it left the factory.
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so a UL inspection of the complete unit is not satisfactory? don't they have to be recognized in order to be able to legally place the inspection sticker on there?
 
wmthompson90 said:
so a UL inspection of the complete unit is not satisfactory? don't they have to be recognized in order to be able to legally place the inspection sticker on there?
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There has been no UL inspection of the completed assembly.
The yellow label simply says 'In my opinion this was built properly'.
 
"Approval" of equipment is mostly an AHJ decision but OSHA and most jurisdictions require assemblies to be NRTL approved. Palmer Engineering is not an NRTL
 
jim dungar said:
I take the yellow label as saying, the final controls/assembly has been reviewed, by a PE but not an NRTL, for compliance with the Supplement to UL508A and as such should be good for an SCCR of 65kA.
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That would the the first time I have seen a PE assume that risk. He must do it a lot, because he had stickers printed up.

So it satisfies the SCCR requirement, but not the NRTL listing one. Why take that extra step if you are the panel builder? Why not just apply to get UL508a?
 
Jraef said:
That would the the first time I have seen a PE assume that risk. He must do it a lot, because he had stickers printed up.

So it satisfies the SCCR requirement, but not the NRTL listing one. Why take that extra step if you are the panel builder? Why not just apply to get UL508a?
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Probably because the vast majority of people buying control panels don't give a rats ass if it has a ul sticker on it and won't pay the extra costs to get it.

Can't say I blame them all that much
 
Jraef said:
That would the the first time I have seen a PE assume that risk.
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I have done this for some 'in house' panels for some large cusfomers.
There is little risk, you are simply saying the components were selected per a standard.
The actual label indemnification text is not legible.
 
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