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thearchitect 03-03-2013 07:07 PM

Dimmer switch question
Hello all!

I've installed a 42 bulb/25 watt chandelier and I'd like to install a dimmer switch. I would need a switch that can handle 1050 Watts correct? Does such a switch exist? The highest I've seen is rated at 1000 Watts. Also I should mention that the wiring is knob and tube and I know that heat is a concern. Anything I should be worried about.

Thanks in advance for the advice!

jbfan 03-03-2013 07:12 PM

You would need a 1500 watt dimmer, but you will not like the looks of them.
They have fins that sit outside the box.

joecaption 03-03-2013 07:14 PM

I would wonder why the old knob and tube has not been replaced with new romex.
A rewiring job is about 50 years over due.
But that's my own opinion.

k_buz 03-03-2013 07:18 PM

I don't know what the current chandelier replaced, but the new one draws almost 9A. This is most likely a 15A circuit and may cause the circuit to trip.

stickboy1375 03-03-2013 08:11 PM

12 Attachment(s)
install 15 watt lamps, save yourself the headache...

dmxtothemax 03-04-2013 05:36 PM

1 Attachment(s)
Even better use 7w CFL's,
they make them in all the fancy and miniture sizes now !
Attachment 66759

stickboy1375 03-04-2013 05:42 PM

12 Attachment(s)

Originally Posted by dmxtothemax (Post 1129933)
Even better use 7w CFL's,
they make them in all the fancy and miniture sizes now !
Attachment 66759

Yeah, but are they dimmable? A lot of those dont play nice....

thearchitect 03-04-2013 08:19 PM

Thank you all for your replies!

Upon further inspection it actually looks like MC cable?...not knob and tube. The wires are in insulated in a rubber/plastic type sheathing, then in a woven fabric, then in a thicker fabric/rubber type insulation. Pic below...

Back to the dimmer in question...

Has anyone had any experience with a Lutron C-1500?

Again...thank you all for your helpful replies!

k_buz 03-04-2013 08:46 PM

That is knob and tube.

thearchitect 03-05-2013 09:43 PM

Ahhhh yes. Well I believe I have sufficiently shown my inexperience with these matters and have thrown in the towel to call on a professional for help.

If I may, one last question before I hang up my tool belt...

Is knob and tube generally even able to handle a fixture putting out 1050 watts or is this not a good omen? I'd like to have some idea so I can either ship, yet another, fixture back to China or leave this puppy up.

Thanks again all!

dmxtothemax 03-05-2013 09:57 PM

Have a look at the size of the fuse for that circuit,
this will give you an idea what it can handle.
All this depends on it still being in good condition.

And be aware that there are many rules reguarding K & T,
you cannot add to, modify or extend K & T.
If it is still working and safe you can continue to use it.
Many electricains choose to not touch any K & T.
Instead they will choose to run a new circuit.
Due to liability issue's.

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