Wiring A Knife Switch Most Knife Switch, Wikipedia Collections
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Wiring A Knife Switch - Using the rivets you may want to fasten the 6 contacts to the face of the transfer. This is done bu extending a rivet via the touch, the base cloth, then the backing plate. The rivets are aligned to the contacts with a scrap piece of 3/8 inch thick cloth clamped right into a vise which acts as an anvil to the rivets. Use a chunk this is wide sufficient to permit for two consecutive rivet points to be carried out, this will align the touch as wanted. The rivet is the staked down with the aid of flaring the tube with a punch. Hammer the punch all the manner to the base and you may locate that the touch is company and relaxed.
The connection points pass on the ends of the container. I made 4 input factors and four output points. The center 2 contacts are ground and the outer 2 connection factors are strength. The energy connection factors are 10-24 brass screws with a nut fastened to the out of doors of the field. The inner wiring is soldered at once to the touch backing plates and related to the screws. The ends of the touch wiring become looped and tinned with solder. Brass nuts are used to connect external energy. This switch changed into installation with 2 independent switches. The middle or hinge point turned into related to supply power and the decrease touch factors had been connected to floor. The upper contacts were left floating and are used as a knife holder in this example. Don't forget to play safe because the contacts at the surface are live.
The rivets needed are crafted from 3/sixteen inch copper tubing. That is cut into three/4 inch lengths than one give up is flared with a tubing flare device. The flare tool is reversed and the flare in hammered flat at the bottom of the device growing a flat rivet face. The backing flanges are scrap pieces of copper that are drilled with a 3/sixteen hole to permit for the rivet to comfy to and offer a solder point to the internal transfer contacts. You could need to drill som extra holes for ease of soldering later.