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a. Entrance/major appliance leads loose/antioxidant needed:
It is very important that electrical connections be secure. Often, common aluminum entrance cable (Fig. a1, Item A) and major appliance circuits (Fig. a1, Item B) are loose. This is either caused by careless installation or by gradually working themselves loose as they expand and contract under load. Aluminum wiring is supposed to be coated with an antioxidant compound to prevent aluminum oxide (an electrical resistor) build up (Fig. a1, Item C) on its surface.
Fig. a1
What to: How to:
Any loose wire connection should be tightened. Those that require an antioxidant should generally be disconnected, cleaned, and reconnected with the antioxidant on them. This isn’t normally an emergency situation, but should be accomplished by a competent electrician to prevent a problem.
Reference: E4, E17
Applicable Products: EP2 |