Same with crimp or crush-type splice connectors, as they bind on the wires very tightly, ensuring electrical connection. Do not use on aluminum-to-aluminum connections. For wire-nuts this doesnt apply, as the wires are crushed together with a high pressure. The only twist-on for aluminum-to-copper connections.The Twister AL/CU Wire Connector is the only UL Listed aluminum-to-copper twist-on connector that. 1 Like jpope (Jeffrey Pope, CMI) September 29, 2008, 6:53pm 9 Ben, Where did you get the information that these are approved splicing methods They are UL Listed for connecting CU and AL, but should not be suggested (by an HI) as a permanent repair method for the older AL wiring of the 70’s. The connector prevents aluminum oxidation while providing a secure.
#PURPLE WIRE NUTS CODE#
Filled with an anti-oxidant compound, the Twister® AL/CU easily twists on with swept-wings making a comfortable connection with improved conductivity and cooler connections.The live-action spring expands and contracts with aluminum wire to ensure a secure connection while the hexagonal head makes for quick and easy installation by hand or with a standard nut driver.The Twister® AL/CU is the only twist-on wire connector to be UL Listed and CSA Certified for aluminum-to-copper connections, as well as the only twist-on solution to comply with the National Electric Code Section #110-14(b).Twister® AL/CU Wire Connectors are designed as a one-use only connection.For use only on copper-to-copper or aluminum-to-copper connections. The Twister AL/CU Wire Connector is the only UL Listed aluminum-to-copper twist-on connector. The only twist-on for aluminum-to-copper connections.The Twister® AL/CU Wire Connector is the only UL Listed aluminum-to-copper twist-on connector that prevents aluminum oxidation while providing a secure connection.
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