11:44PM | 12/25/03
Member Since: 12/23/03
17 lifetime posts
I have a ceiling fan that also has 3 lights on it. There are two switches on my wall, one for the fan and one for the lights. When I have both on and turn off the fan, the lights go off too. Why is this? Is this a safety issue or something not to be too worried about? Been installed and used for 5 years now. Doesn't always happen either.


05:32PM | 12/27/03
Member Since: 11/14/00
333 lifetime posts
You might have the neutral wire connected to the fan switch instead of the hot wire going to the fan. The switch for the fan disconnects thus the neutral for both the fan and lights instead of just cutting off the hot wire to the fan, alone. (Generally, the fan and the lights share the same neutral wire returning to the circuit breaker box, but have their own designated hot wires carrying current that ultimately comes from the circuit breaker box. Even if that current for both fan and lights at one point comes from the same hot wire, it needs to be spliced at some point to provide seperate hot wires for the fan and lights.)

This is a very dangerous wiring scheme, which should be corrected no matter what. It means that the hot wire to the fan is not switched and current is constantly running through the fan even when it is turned "off." The switch should always shut off the hot wire, not the neutral wire. If current is constantly going through the fan unit, it can seriously shock someone if they work on the fan with the switch turned off, wrongly thinking that no current is going to the fan because the switch is off.

The current should also be stopped at the switch BEFORE it runs through the fan, not after it returns from the switch, for the same reasons: you don't want someone to work on the fan with the switch "off," thinking that there is no current going to the fan because the switch is off. Even if the switch is after the appliance on the circuit, the hot wire should not be connected to the appliance directly in the appliance box. It should continue its run to the switch, be cut off there, and then connected to the hot wire of the fan AFTER it returns from the switch.

Another possibility is that they connected the hot wire for the fan to one pole/screw on the swicth, and the neutral to the other, completing the circuit in the switch instead of through the appliance. This also is a very dangerous wiring scheme for much the same reasons. Only the hot wires should be connected to the switch, and the neutral wires connected directly to the appliances/outlets. The switch then interrupts only the hot wire and truly does turn the appliance/outlet off (no voltage going through the unit) when it is switched "off."

[This message has been edited by Lawrence (edited December 27, 2003).]


08:29AM | 12/29/03
Member Since: 09/17/02
524 lifetime posts
Since you said it dosn't always happen you must have a bad connection somewhere. The wires for the fan are shorting to the wires for the lights. It could be in the switch box or the fan box.
Click_to_reply_button Inspiration_banner


Post a reply as Anonymous

Photo must be in JPG, GIF or PNG format and less than 5MB.


type the code from the image


Post_new_button or Login_button

Handscraped finishes join the rustic, old-world feel of antique flooring with the durability and simplified installation b... Reused steel windows create an eye-catching splashguard in this walk-in shower. The vintage factory windows bring an inter... A galvanized steel tub is a surprising but charming fixture in this bright and breezy screened patio. It's perfect for was... If you're not crazy about the idea of commingling plants and pool, this modern variation may be more to your liking. The s... Yes, a freestanding garage can become its own tiny house. Artist Michelle de la Vega has all the comforts of a modern resi... If you lack plumbing skills but have a good sturdy tree, here's the easiest outdoor shower solution of all: Simply attach... Pursue what's known as the stack effect. To achieve it, open the windows on both the upper and lower floors, and as warm a... How do you like this smart use for an old bottle? Clamp an empty wine bottle to a fence or wall near your outdoor deck or ... Simple and striking, a couple of pieces of "lovingly used" furniture creates a special kind of charm. A weathered chair fo... Twine lanterns add pops of crafty—but sophisticated—flair to any outdoor setting. Wrap glue-soaked twine around a balloon ... When securely fastened to a tree or the ceiling of a porch, a pallet and some cushioning make the ideal place to lounge. V... Incorporate nature into your lighting scheme by securing a dead tree in a concrete mold and draping your pendant lamp from... For the cost of a can of exterior paint , you can totally transform your porch. Paint the floor a hue that complements yo... Repurpose birthday hats to create a string of lanterns for your porch, patio, or garden. Cut the tip of the cone, punch h... This garden shed has been decked out to the nines. Designer Orla Kiely created the intimate home for a flower trade show, ...
Newsletter_icon Google_plus Facebook Twitter Pinterest Youtube Rss_icon