I am not an electrician but I thought that wire nuts were not approved for
use with aluminum wire.
John KK9A
Stan K2STN wrote:
The understanding is that aluminum almost immediately skins over with
oxide after being dry abrasively cleaned. Having the Noalox in the pad
puts down a film that protects the cleaned surface from re-oxidation.
Aluminum oxide is an insulator.
They found this out when investigating failed junctions made with wire
nuts that had proven to be faulty and had caused house fires. What they
discovered was that the only path between the twisted wires of the
junction was through the metal threading of wirenut itself, which is not
designed to carry current. It was making the circuit because the
wirenut's threads had cut through the oxide completing the connection
between the twisted together oxide insulated wires.
Stan
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