Does equipment need to be NRTL listed?

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DanOmar

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Franklin Park, IL
I have been installing power to equipment for many years and this is the first time I encountered this issue with an inspector. I was told that each piece of equipment (machine) needs to have a UL label or from some other testing lab. It's not so much my problem as my customers, but is this accurate? Does 110.3 (C) mean that any machine needs to be tested in order to be compliant with the NEC?
 
In most areas Electrical equipment installations need to be approved by an inspector. In approving the install the inspector often relies on a NRTL certification. In addition many agencies including OSHA require equipment to be NRTL approved (UL is one of many NRTLs)
 
In NC all electrical equipment must be listed, General Statute 66-25 I don't know about other states.



§ 66-25. Acceptable listings as to safety of goods. (a) All electrical materials, devices, appliances, and equipment shall be evaluated for safety and suitability for intended use. Except as provided in subsections (b) and (c) of this section, this evaluation shall be conducted in accordance with nationally recognized standards and shall be conducted by a qualified testing laboratory. The Commissioner of Insurance, through the Engineering Division of the Department of Insurance, shall implement the procedures necessary to approve suitable national standards and to approve suitable qualified testing laboratories. The Commissioner may assign his authority to implement the procedures for specific materials, devices, appliances, or equipment to other agencies or bodies when they would be uniquely qualified to implement those procedures. In the event that the Commissioner determines that electrical materials, devices, appliances, or equipment in question cannot be adequately evaluated through the use of approved national standards or by approved qualified testing laboratories, the Engineering Division of the Department of Insurance shall specify any alternative evaluations which safety requires. The Engineering Division of the Department of Insurance shall keep in file, where practical, copies of all approved national standards and resumes of approved qualified testing laboratories. (b) Electrical devices, appliances, or equipment used by the Division of Prisons of the Department of Adult Correction in institutional kitchens and manufacturing equipment used by Correction Enterprises are exempt from the evaluation requirement of subsection (a) of this section. (c) The Department of Administration, Division of Purchase and Contract, shall not seek to enforce the provisions of subsection (a) of this section by any means, including requiring acceptance inspections or additional testing of electrical materials, devices, appliances, or equipment purchased by State departments, agencies, and institutions. (1933, c. 555, s. 3; 1989, c. 681, s. 1; 2013-289, s. 11; 2014-100, s. 16C.4; 2015-241, s. 16C.13A; 2017-186, s. 2(rrrr); 2017-211, s. 6(a); 2021-180, s. 19C.9(p).)
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TN is similar

0780-02-01-.03 APPROVAL OF ELECTRICAL PRODUCTS.
(1) Approved Testing Laboratories.
(a) Any materials, equipment, devices or applicants that meet one (1) of the following
requirements will be accepted as compliant by the Commissioner of Commerce and
Insurance, or the Commissioner’s designee, when properly installed or used:
1. Bear a label, symbol or other identifying mark of one (1) of the independent
testing laboratories approved by the Commissioner. A list of approved
independent testing laboratories shall be maintained and published by the
Division of Fire Prevention.
 
Mostly this has been something that individual states decide on by adopting and/or amending the NEC to make it less ambiguous, because in the past, 110.3 was not as direct as it is now when they added (C) for the 2017 version. So for the few places that are still using older Codes, it may not yet apply.

And this will only apply to ELECTRICAL parts of a machine, NRTL listing of an entire machine is something different.
 
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