3M

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• in Twist On Wire Connectors

  3M manufactures wire nuts and connectors among its line of products. Their model  R/Y+ replaced both red and yellow wing style wire nuts, while 3M's B/G+ covers both the large blue and gray wire nut connectors. 3M wire nuts are UL, CE, IEC, and CSA approved, with a maximum recommended voltage rating of 600V; wire range capabilities 14 to 6 or 22 to 8.

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