(206) 949-5683, Top Rated Plumber, Seattle
Results 1 to 10 of 10

Thread: Random electrical wiring questions

  1. #1
    In the Trades dwindle's Avatar
    Join Date
    Nov 2012
    Location
    North East Pennsylvania
    Posts
    49

    Default Random electrical wiring questions

    1. Is it okay to have one half of an outlet it's own circuit, such as for an air conditioner? (yes, I broke off the tabs)
    2. Can I have multiple wires in a strain relief?
    3. How about a staple?
    4. Should junction boxes be grounded?
    5. Is there any disadvantage to using breakers that are two in one?
    6. Why didn't I learn this before doing so much work?

  2. #2
    Jack of all trades DonL's Avatar
    Join Date
    Mar 2011
    Location
    Houston, TX
    Posts
    3,652

    Default

    Quote Originally Posted by dwindle View Post
    1. Is it okay to have one half of an outlet it's own circuit, such as for an air conditioner? (yes, I broke off the tabs)
    2. Can I have multiple wires in a strain relief?
    3. How about a staple?
    4. Should junction boxes be grounded?
    5. Is there any disadvantage to using breakers that are two in one?
    6. Why didn't I learn this before doing so much work?

    Is it April Fools ?


    Be Careful when Playing with electricity.
    Theory only works perfect in a vacuum.

    Cyber Security Protection for Windows C:\ > WWW.WinForce.Net

  3. #3
    Retired Defense Industry Engineer jadnashua's Avatar
    Join Date
    Sep 2004
    Location
    New England
    Posts
    21,412

    Default

    1. You probably wouldn't want 240 and 120vac in the same box, but the plugs are different. Assuming you are using a duplex receptacle, it is entirely fine to wire each with its own power feed as long as you break the tab(s). A common way to supply this is with 12/3 on a duplex CB, which then shares the neutral (so you wouldn't break that side). That kind of circuit will not work if you want to use a GFCI, as the current being shared would drive the thing crazy. 4. If it is a metal box. 5. if one side goes bad, you have to replace the whole thing.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  4. #4
    Test, Don't Guess! cacher_chick's Avatar
    Join Date
    Jan 2008
    Location
    Land of Cheese
    Posts
    3,151

    Default

    What Jad said, to add that you must use cable staples or supports which are listed and labeled for multiple cables if that is how you will be using them.

  5. #5
    In the Trades dwindle's Avatar
    Join Date
    Nov 2012
    Location
    North East Pennsylvania
    Posts
    49

    Default

    It's a 110, in a bedroom where one person may be using the air conditioner while another is using an electric blanket.
    Yeah, I know.

  6. #6
    Retired Defense Industry Engineer jadnashua's Avatar
    Join Date
    Sep 2004
    Location
    New England
    Posts
    21,412

    Default

    Basically, yes, you can wire the feed to each separately, either in a shared neutral situation or with entirely separate feeds. In either case, you always tie the grounds together, and if it is a metal box, bond them to the box as well as the receptacle's terminal. If you're using a 20-A circuit, and a 20-A receptacle, both must be 20A feeds regardless of what you plug into them.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  7. #7
    Electrical Contractor Bobelectric's Avatar
    Join Date
    Feb 2009
    Location
    Eighty Four,Pa. 15330
    Posts
    37

    Default

    Quote Originally Posted by dwindle View Post
    1. Is it okay to have one half of an outlet it's own circuit, such as for an air conditioner? (yes, I broke off the tabs)
    2. Can I have multiple wires in a strain relief?
    3. How about a staple?
    4. Should junction boxes be grounded?
    5. Is there any disadvantage to using breakers that are two in one?
    6. Why didn't I learn this before doing so much work?
    1. Yes if box has adequite cubic inches.
    2. No unless you mean romex connector.
    3. If listed for more than 1 cable.
    4. Always.
    5. They are approved.
    6. You did't ask.

  8. #8
    DIY Junior Member HarleyDog's Avatar
    Join Date
    May 2013
    Location
    Syracuse, NY
    Posts
    3

    Default

    Quote Originally Posted by dwindle View Post
    It's a 110, in a bedroom where one person may be using the air conditioner while another is using an electric blanket.
    Yeah, I know.
    If you have two circuits connected to one yoke then both circuit breakers must have handle ties (or a double-pole breaker) in order to turn off both circuits. This is code, and it's to make sure that if somebody is trying to fix the receptacle, for whatever reason, they don't just turn off one-half without realizing the other half is still energized. Also, if you wire it with a shared neutral (12/3 with ground) you have to use a two-pole breaker. If you share a neutral, and the two circuits originate from the same "leg" you have a really good chance of over-heating the neutral and burning the house down. By using a two-pole breaker the neutral wire only carries the unbalanced portion of the load.

  9. #9
    Electrical Contractor/Instructor jwelectric's Avatar
    Join Date
    Jun 2007
    Location
    North Carolina
    Posts
    2,523

    Default

    Quote Originally Posted by HarleyDog View Post
    If you have two circuits connected to one yoke then both circuit breakers must have handle ties (or a double-pole breaker) in order to turn off both circuits. This is code, and it's to make sure that if somebody is trying to fix the receptacle, for whatever reason, they don't just turn off one-half without realizing the other half is still energized. Also, if you wire it with a shared neutral (12/3 with ground) you have to use a two-pole breaker. If you share a neutral, and the two circuits originate from the same "leg" you have a really good chance of over-heating the neutral and burning the house down. By using a two-pole breaker the neutral wire only carries the unbalanced portion of the load.
    Quote Originally Posted by Bobelectric View Post
    1. Yes if box has adequite cubic inches.
    2. No unless you mean romex connector.
    3. If listed for more than 1 cable.
    4. Always.
    5. They are approved.
    6. You did't ask.
    Both answers are correct and good answers

  10. #10
    Moderator & Master Plumber hj's Avatar
    Join Date
    Aug 2004
    Location
    Cave Creek, Arizona
    Posts
    25,655

    Default questions

    1. Yes, assuming each "hot" wire is on a different leg of the 240 circuit, otherwise the neutral will be overloaded, and it does not have a circuit breaker to prevent it.
    Licensed residential and commercial plumber

Similar Threads

  1. Electrical wiring in India
    By Terry in forum Electrical Forum discussion & Blog
    Replies: 9
    Last Post: 03-14-2013, 12:02 PM
  2. Electrical Wiring Capacity / HEAT
    By chefwong in forum Remodel Forum & Blog
    Replies: 4
    Last Post: 03-27-2012, 07:12 AM
  3. Faulty Wiring - Electrical Fire
    By Dan W in forum Electrical Forum discussion & Blog
    Replies: 15
    Last Post: 08-17-2008, 09:18 AM
  4. electrical wiring deficiency?
    By trackerxx in forum Electrical Forum discussion & Blog
    Replies: 8
    Last Post: 02-28-2008, 10:35 PM
  5. Best Drill Bit for Electrical Wiring
    By Lakee911 in forum Electrical Forum discussion & Blog
    Replies: 20
    Last Post: 01-19-2008, 09:37 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •