New answers tagged wire
Preferred solution in that case is to attach the safety-ground wire to the box with a screw (if the box is metal), or wrap it around one of the fixture's mounting screws. As long as it makes a circuit to the box and the body of the fixture, it's doing it's job. (Of course if the fixture is non-conductive, it doesn't need grounding.)
Yeah, that will work fine. Flux core is sometimes used in MIG welders even when gas is available. For example, flux core will work in windy conditions that would blow away shielding gas. Also, flux core often gives somewhat better penetration than gas shielded wire.
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