UL does evaluate the manufacturer’s installation instructions provided with UL certified products.
Overcurrent protection for motors and motor circuits is a little different than the rules for conductors as specified in Article 240, because motor loads have different characteristics than general lighting and other loads.
A National Standard of Canada, CAN/CSA-B72-M87 Installation Code for Lightning Protection Systems provides guidance on lightning protection.
In the electrical industry, there is no room for complacency. "Ordinary” and "routine” tasks, such as verifying voltage, taking current readings, and even visual inspection of live or energized parts, can subject the inspector and electrician to the multiple hazards of electricity.
With the expanding surge protective devices industry comes a learning curve for code authorities, for electricians, for consumers and for the safety testing agencies.
Many electrical inspectors can tell you that confusion about wire temperature ratings and equipment termination temperature requirements results in their rejecting installations.
This editorial will focus primarily on electrical inspector certification and recertification in the United States for the purpose of covering proposed changes that will affect the IAEI program in the US.