Traditionally, when we plan to do anything, we should ask ourselves three questions:What? Why? How?Let’s apply this approach to the subject at hand. Seriously, as electrical designers, installers and regulators, what do we know about a need for a lightning protection system? Except for a few references, the Canadian Electrical Code is silent on this [...]
(No Ratings Yet)A National Standard of Canada, CAN/CSA-B72-M87 Installation Code for Lightning Protection Systems provides guidance on lightning protection. The following information may be found in the standard. Lightning Lightning results from the build-up of an electrical charge on a cloud. When this charge has built up to a sufficient level, a lightning stroke to earth may [...]
(No Ratings Yet)Question: Letter of findings I recently encountered a lightning protection system on a water treatment plant that was certified by UL with what was referred to as a ‘Letter of Findings.’ The only type of lightning protection certification I’m familiar with is the UL Master Label. What is a ‘Letter of Findings,’ and what other [...]
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