A box just in the wall is not grounded so you can not ground to it. Your cable should have a hot (black), neutral (white) and a bare copper ground so there shouldn't be any need to ground to a box and most fixtures come with a grounding pigtail you can attach to your bare copper ground.
What I was thinking was that all the connections would be made in the metallic wall box, so the box would be properly grounded. I am unclear if the fixture needs to hang from the box or can the wall support it.
There are two styles of fixtures..... whether wall or ceiling mount.
One style comes with a back plate that has a knockout or two in it. With this style you can bring the wire directly into the fixture. The back plate mounts to the wall. It gets grounded and the fixture attaches to the back plate.
The other style of fixture has a canopy or wiring cover but the back is open. This type of fixture requires a box to connect to. This type fixture also comes with a fixture bar to mount the light to the box.
One of my box fans started to screech where I couldn't use it. I followed a how to disassemble
the unit to see if it could be salvaged. I got as far with that as I thought prudent.
The shaft turned very slowly under power. Previously the fan had tipped on it's face running
and I was not there right away to pick it up.
Once inside I saw this old fan had a lot of dirt in it. You can laugh at the next part:
After blowing out with air I used some brake cleaner in those works. Appying power at the switch
I can hear a hum like it wants to run but the shaft assembly does not turn.
I bought some of the right kind of 3 in 1 lubricant-- (blue 3oz label) but have not applied any
in the bearing area.
Is this appliance salvagable?
I want to convert a 4-tube T-8 fluorescent fixture to LED. I watched some YouTube videos and think I have the gist of it but I like to get a sanity check before I do anything that could potentially blow my toenails off, so I'm asking here.
I've already taken the fixture off the ceiling (for lack of not knowing I didn't need to) so here's what it looks like:
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[url=https://www.hostpic.org/view.php?filename=2108052319470369.png][img]https://www.hostpic.org/images/2108052319470369.png[/img][/url]
What I'm thinking needs to happen is to cut all the wires off the ballast (but the black and white wires don't need it because they're already unhooked) and chuck the ballast. Then connect the white wire hanging out of the ceiling to both of the yellow wires in the fixture. Then bundle the remaining four (red & blue) wires (which were previously connected to the ballast) and connect them to the black wire hanging from the ceiling.
Does that sound about right? And does anything need to come of the bare copper wire hanging from the ceiling?