russ__20000 said:
manufactures instructions is not the same as instructions of listing and labeling.
Have you anything to back up that statement??
Here is what I found
1.0 UL LISTING, CLASSIFICATION, AND FIELD EVALUATION INFORMATION
1.1
(NW)
(W)
Q.
Manufacturer?s installation instructions ?recommendations.? Some manufacturer?s installation instructions include ?recommendations? that are not required by the NEC? or other Model Code. How does UL view such ?recommendations?? Specifically, for a hydromassage bathtub, the NEC? requires accessibility. A manufacturer?s installation instructions recommend a certain sized opening for such accessibility, but don?t say that it is mandatory. Instructions for smoke alarms ?recommend? a detector in every room, which is not required by building or fire codes. Does the AHJ have the authority to ask for the installation instructions? Is UL doing anything to standardize the terminology that installation instructions use?
A.
Installation instructions provided with UL Listed products are reviewed as part of the Listing investigation. Manufacturer?s recommendations that are part of the installation instructions should be followed in order to comply with NEC? Section 110.3(B). The AHJ should expect all installation instructions provided with UL Listed equipment to be available for review at the time of inspection.
If an AHJ believes that the manufacturer?s recommendations in the installation instructions exceed what is necessary for a safe installation; then NEC? Section 90.4 gives the AHJ the prerogative to approve the installation.
More than one Model Code regulates many different installations in the built environment. Smoke alarms are an excellent example of this, since multiple Model Codes address requirements for their installation; including the International Residential Code? (IRC?) and NFPA 72, the National Fire Alarm Code?. When this situation exists, the installation instructions will then reflect the installation requirements found in each of the governing Codes.
If an AHJ believes that a product?s installation instructions conflict with the NEC? or other Model Code, please contact a Regulatory Services staff member at 1-800-595-9844.