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Thursday, December 24, 2020
Question:
Hello,
Code Question of the Day. Are reducing washers suitable for bonding as covered in the NEC?
Sam Goodhue
A
Answer:
Hi Sam,
Thanks for the question. Yes, listed reducing washers are suitable for bonding, as indicated in UL Product Category QCRV. Here the text states that Metal reducing washers are considered suitable for grounding for use in circuits over and under 250 V and were installed according to ANSI/NFPA 70, "National Electrical Code." There are multiple NEC rules that address continuity and conductivity in bonding processes such as those created when using reducing washers. More information is available at: https://productiq.ulprospector.com/en Hope this is helpful.