Question about Electrical Supplies
Fitting new light switch from old CAT281/1 to new CAT681VH have common/one way/neutral and earth. New switch not the same?
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Posted on Jan 02, 2017
SOURCE: Household wiring
There are 2 3way switches. Usually one end has a wire going to the light, and the other end 3 way switch has the always on power coming in. Between the two switches are 2-wire travellers.
On the actual 3way switches;
2 screws are the same color and the 2-wire travellers go on these. The other screw is a different color -usually black. This screw gets the power on one end, and the switch leg to the light at the other end.
Posted on Mar 14, 2009
you have to find which wire does what on your switch.Its a three speed fan so you should have three wires that go from the switch to the fan,and one wire that goes from the switch to the hot wire from your house.What you need is a continuity tester.The switches common wire connects to the hot wire from the house.To find this wire you use the continuity tester.as you switch the switch the common wire will be either disconnected from all other wires,or it will be connected one at a time to each of the other wires.only the common wire will be connected to more than one other wire from the switch.If you don't know how to use a continuity tester.it is pretty simple.It has two leads that come from it and when you touch the two wires together the tester lights,or buzzes,or it changes a reading on a display,or all three.depends on what kind you have.what your doing is instead of just touching the leads together your doing it through the switch leads,and hence through the switch.anyway after you find the common wire the other three wires connect to the inputs of the fan.You really want to connect the first wire that connects to the common through the switch to the wire that turns the fan on low then the next wire to the medium then the high.It wont blow up or anything if its in the wrong order,but it wont switch from low to medium to high.
Posted on May 22, 2009
Probably put your family at risk of electricution . By connecting the live cables to earth you have effectivly made all the metal light fittings live. It is amazing that the fuse has not blown, This in itself is dangerous and you should have an electrician look at the wiring.
The correct wiring should be as follows.
Identify cables there should be 2 twin and earth (red black & copper earth) cables and 1 twin red and copper earth. (or 2 single red wires)
connect all copper earth wires suitably sheathed in green/yellow sleeving to earth lug.
Connect 2 black cables to neutral block.
Connect either single red (0r 1 of 2 reds) into live block.
connect remaining 3 reds into loop block.
Posted on Nov 13, 2009
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