Question about Electrical Supplies
I'm an electrician and can help you wire this switch. The wiring at the switch doesn't really change. You will be removing one wire from the old switch and connecting it to the new switch and doing that once more for a single pole switch. If you have a 3-way switch it is more involved - but I can help with that too let me know.
The wires at the light fixtures simply daisy chain ground to ground, white to white & black to black at one fixture on to the next, to next ,to the next for as many fixtures that are to come on when the switch is turned on. The number of lights and which lights that are to turn on were set up when the room or space was first wired.
Below is what the wiring will look like:
Switch in box. 3 lights in boxes
Black --------/ -------------------------------------------------'-----'-----'
Power O O O
If you have questions - provide the dimmer make & model number.
I hope this helps!
Posted on Mar 02, 2012
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Posted on Jan 02, 2017
the two black wires spliced are Live wires ( same value as RED) the other single black is the return. The two twisted blacks from the wall go into ther active hole of the new switch and the single into the return. No third wire for earth is needed
Posted on Jul 27, 2009
SOURCE: Problem w/new sliding dimmer
The problem is that the Cooper #9530DS-K-L is actually a 3-way switch and you need a single pole dimmer switch to replace your existing single pole toggle switch.
If you want to use the Cooper switch you have you can take one of the black wires and cap it with a wire nut and connect the other two wires, but frankly, you'd be paying about 2 times the price for a 3-way dimmer switch when you only need a single pole switch.
You should be able to return the switch and get the correct one.
You should only have (2) black wires on the proper replacement switch, plus a ground wire
Hope you found this very helpful and best regards!
Posted on Aug 07, 2009
SOURCE: wiring dimmer to knob and tube
You should attach the green grounding wire to the metal box using a green grounding screw. You don't want to leave the wire loose, as any contact with the switch screws could cause a short.
Also, you should wrap the switch with at least 2-3 complete wraps of electrical tape to prevent the screws from contacting the sides of the wall box.
As a side note, you should likely have a complete check done on your house if you still have knob and tube wiring installed, as the dangers associated with this very old wiring are many. Typically, older K&T wiring was used in homes well over 60 years ago and houses then only had minimal electric current drawing devices, such as lights and a couple of other small appliance devices (toasters, coffee pot, TV and radio, etc.)
The problem with older homes with K&T wiring still in use, is that the circuits can be easily overloaded with modern electric convinences and lead to a possible fire situation, especially since there is no dedicated ground to help mitigate short circuits, etc. Also, the rubber based insulation used on this type of wiring deteriorates after 40 years (+/-) and rodents tend to chew on exposed wires in attics and crawl spaces.
I don't wish to alarm anyone, but as a Licensed Master Electrician, I've seen and done my share of repair work involving Knob & Tube wiring and even had a couple of homes that had a mix of it and other, newer wiring, that I've completely rewired. Many states require K&N wiring be replaced before a home can be sold, so getting a jump on it will make your home safer and better suited to operate all the devices that people tend to have, in today's society.
Hope you find this Very Helpful and best regards!
Posted on Sep 10, 2009
All your wiring looks good. Many times dimmer just have problems and are faulty. You should note that the dimmer can only handle 600 watts. If you have that or more on it, than you have probably fried the dimming mechanism. In either case the dimming mechanism is not working properly and you will have to take it back and get the same dimmer or a different one. Tell the store they sold you a faulty dimmer and you can get a replacement at no cost.
Posted on May 29, 2010
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