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what the hell is a grounding device? Any device that allows you to affix a ground wire to the mechanical enclosure that the conductors are in. eg. Ground lugs, ground screw in an electrical box.
The one screwed into the unpainted frame or on to the motor.
Normally the fixtures come with a grounding screw that you attach the grounding wire to. If the box you attaching the fixture to is metal and there is no grounding wire present then the grounded conduit should ground you fixture.
why design a screw jack? there are all different types of screw jacks available screw jacks are used on vehicles, other screw jacks are used in construction,and any other lifting application that you can thick of.
Grounding.
V1
grounding strap
The black "hot" conductor goes to the brass coloured screw. The white coloured conductor goes to the silver coloured screw. The bare ground conductor goes to the ground green coloured screw
Best is to use a grounding mat and an esd strap. Be sure to discharge any static before reaching in to your computer.
A screw clamp is something that is used to put a screw in place. There are hand screw clamps where you use your hand to tighten the screw.
Ratchets are used to prevent extra pressure on the screw in the screw gauge.
what crosshead screwdriver used for