Quote:
Originally Posted by Mike AA
The little metal tab which contacts the wire (typically about 1/4 the wire size) has a tendancy to heat up and cool down losing its spring ability and thus losing contact.
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The spring tab that contacts the wire isn't where most of the current flow happens - instead it is the large flat (and thick!) surface that it is pressing the wire against. I will suggest that (for these connectors) the temperature rise in the wire will exceed that of the connector.