COMMUNITY FORUM

brian3d

01:17PM | 01/12/05
Member Since: 01/11/05
23 lifetime posts
Bvelectrical
Hello all, first time poster...

I've been in my house about a year now and just discovered that I have ceiling light which shares a neutral with another circuit - one of those situations where 3 way switches are connected with 2 wire cable, leaving no neutral at the fixture. After some poking around, I found out that this is okay if the two circuits are on different phases. I'd just like some clarification: does this mean that one breaker has to be on the left side of the hot bus, and the other on the right? Both are on the same side right now. I figure this is only adding 1/2 amp to the neutral load of the other circuit (120V w/ 60W bulb) but I plan on correcting it anyway if it's wrong.

Here are a couple more questions if I have to move one of the breakers: first, do the neutral and ground need to be moved in the panel to the other neutral/ground bus? (There is one neutral/ground bus next to each hot bus). It doesn't seem to me like they should have to be but I don't know what common practice is. Second, are splices allowed inside the panel? I may need to do that in order to reach another part of the bus bar.

Thanks!

Brian

bcaputo

01:35PM | 01/12/05
Member Since: 12/16/04
16 lifetime posts
House panels are usually single phase, meaning an A phase and a B phase. Using common neutral for a multi-circuit is acceptable under normal conditions. Your use as discribed will not be an issue. Your panel is most likely a then b then a then b etc etc along one side of the panel. Confirm this by checking the diagram in the panel or viewing how the buss bar is connected to the main wiring. With this configuration the breakers being in order as discribed is acceptable.

If this is a main panel the neutral bar and ground bar are usually the same, meaning you do not have to change the neutral wire, again check if the neutral wire from the main wiring goes to each side.

Splices are not acceptable within a panel by NEC code.

brian3d

07:57AM | 01/13/05
Member Since: 01/11/05
23 lifetime posts
Thanks for the info. Yes, after checking the diagram, it looks like the phase alternates a-b-a-b down each side of the bus. However, the two breakers in question are two spaces away from each other so they are on the same phase. It seems it would be easy to switch one so that they're next to each other, one on top of the other. Does that make sense?

Wireman

04:07PM | 01/17/05
Member Since: 12/19/04
62 lifetime posts
The two breakers sharing the common neutral should be located next to each other so one is on a and the other is on b. If you have a tester you will get 220 volts between both breakers if they are installed correctly and nothing if they are installed wrong.

Prior to around 1980 you could not splice in a service panel but that was changed and you may splice in a panel and still meet code.

Ron
Click_to_reply_button
Inspiration_banner

INSPIRATION GALLERY



Post a reply as Anonymous

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

Reply_choose_button

Anonymous

Post_new_button or Login_button
Register

Let it snow by stringing your tree with sparkly snowflakes — the kind that will never melt. LEDs on string lights burn mu... Filling an underutilized area beneath the stairs is a smart way to save space. Doing so with a stash of wood, however, is ... The Audubon Society inspired wallpaper in this Adirondack-styled entryway will get you in the outdoor mood. Grab your coat... Chalkboard paint opens up endless possibilities for customizing your dresser time and time again. Use chalk to label the c... A fireplace in the bathroom creates the ultimate setting for relaxation. Homeowners often choose electric or gas over wood... This roomy boot tray made from punched metal stands up to all the elements. Station it in your mudroom or at your back doo... There’s nothing like a new set of cabinet hardware to refresh a room. The possibilities are endless: Go modern, rustic, or... FLOR carpet tiles are a simple and affordable way to customize a floor covering for any space. You can make anything from ... Chalkboard paint features prominently in this elegant yet unpretentious headboard design. Add a new message daily to reflec... Salvaged boards in varying widths and colors make up the dramatic accent wall in this attic space. The high-gloss white of... The indecisive homeowner need not fret over choosing one (or even two) cabinet colors. The kitchen cabinets in this artist... Incorporate nature into your lighting scheme by securing a dead tree in a concrete mold and draping your pendant lamp from... Simple and striking, a couple of pieces of "lovingly used" furniture creates a special kind of charm. A weathered chair fo... First dress up your metal shelves with a coat of paint in an accent color that complements your kitchen decor. Then arrang... The vibrant green of Granny Smith apples make a beautifully natural alternative to the traditional evergreen wreath. Brigh...
Follow_banner_a
Newsletter_icon Google_plus Facebook Twitter Pinterest Youtube Rss_icon