Typical Electrical Building Codes

General Requirements when Wiring a House

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A Typical Light Switch - Kelly Smith
A Typical Light Switch - Kelly Smith
Local electrical building codes must be followed during new construction or when remodeling a home. Code requirements vary by room. Building permits must be obtained.

Typical Electrical Building Codes

Although all cities or counties have their own building codes which vary slightly, the typical electrical building codes listed here are often encountered. Some electrical building codes are general to the home as a whole; others get very specific depending on the purpose of the room. This article will list common ones.

The information in this article provides common electrical building codes. Refer to the local codes for specificity.

Understanding home wiring is important before doing any modifications or new installs. Also, be aware that an electrical construction permit should be pulled at city hall and periodic inspections will be conducted by the building inspector.

Wiring for Bedrooms, the Living Room, and the Dining Room

  • Each of these rooms has an entry door. Provide a wall light switch near it.

  • The light switch must turn on either a ceiling light fixture or a switched receptacle.

  • Note that it is no longer acceptable for the main ceiling light to be activated with a pull chain – it must be a wall switch. A ceiling fan light may have a chain but it still must be connected to the switch.

  • Each wall must have a minimum of one electrical receptacle. There may be more than one; there has to be one available every twelve feet.

  • All light fixtures must be on a 15-amp circuit.

Electrical Building Codes for the Kitchen

  • As a rule of thumb, receptacles above countertops used for small kitchen appliances must be GFCI receptacles, controlled by two 20-amp circuits.

  • Other receptacles are on 15-amp split-circuits.

  • Larger appliances such as the garbage disposal, refrigerator, and dishwasher may need to be placed on dedicated circuits.

  • All kitchen lights are on their own 15-amp circuit.

Electrical Wiring for the Bathroom

  • Wiring a bathroom is straightforward. Since the bathroom is a damp environment, count on being required to install GFCI-protected receptacles.

  • Lights must be protected with a globe or something similar to keep moisture at bay.

  • Depending on amperage use, heaters, lights, and fans must be on their own circuits.

Electrical Code Standards for Outdoor Use

  • Any outdoor wiring is at risk from the elements. Considering that, either underground feed cable (UF) or sealed conduit must be used.

  • How deep must it be buried? That’s something that really is dependent upon locale. Check the local electrical building code.

  • All components must be sealed to keep water out, obviously.

Wiring a Closet

  • Closets are relatively simple. One overhead light must be installed; and as mentioned in the living room section, pull chains are not allowed, a wall switch must be used.

Attached Garage Electrical Codes

  • The overhead light requirement is the same as for the closet.

Kelly Smith, Dad, Husband, Freelance Writer, Kelly Smith

Kelly Smith - Kelly has over 30 years experience as a journeyman carpenter and 20 as a freelance writer and photographer.

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Comments

Sep 16, 2008 4:03 PM
Guest :
I NEED A TRANSFORMER ON A POLE LINE THRU MY PROPERTY (NO PROBLEM) THEN ABOUT 255 FT UNDERGOUND THRU ROCK OR LOTS OF FILL IN 4" SCHEDULE 80 PVC. AM I CORRECT SO FAR? THEN FROM METER POLE 65' TO NEW CONSTRUCTON ENTRY BOX. ALL 200 AMP SERVICE. WHAT GUAGE WIRE? CAN I USE ALUMINUM 3W GROUND? ABOUT 300 FEET IN TOTAL. THIS IS NEW CONSTRUCTION GARAGE AND I INTEND TO WELD ETC. AND IN MY ADVANCE YEARS CONVERT TO A HOUSE.
Sep 19, 2008 9:13 AM
Kelly Smith :
It sounds like you're on the right track, but be sure to check your local building codes. You'll need to do that anyway to pull your permits. Why not run it all past a local licensed electrician?

Are you referring to aluminum wire? I'm not familiar with this exterior supply, but I know it's not used in interiors anymore.

Since you're planning on future expansion, you should "over-build" to avoid headaches in the future.
Nov 4, 2008 1:50 PM
Guest :
I would stay away from aluminum wire. It tends to become hard and brittle over time and literally breaks in spots and can leave you in the dark in the future. Especially with a High current demand. Listen to the other guy . Overbuild it put in one size larger as you may want to upgrade equiptment in the future.recycle that aluminum stuff. Captain Electric
Mar 2, 2009 1:52 PM
Guest :
John
Can you tell me if it is legal to run 110v and data cable in the same cunduit pipe. I know it shouldnt be done do to noise in the line but is it legal.
Nov 2, 2009 11:22 AM
Guest :
my landlord, has an old, outdated house, not up to building codes, the electrical wiring is reversed (positive & negative) & people such as our cable guy cannot connect anything until it is fixed because the bad electrical wiring can blow out all of our appliances, we've asked him to fix it & more than a month has passed, legally do we have some kind of right to not pay rent until this is fixed or be able to take some legal action? we dont want our stuff wich is valuable, from fridges, to washers & plasmas to blow out & have damage to thousands of personal property
Nov 2, 2009 3:18 PM
Kelly Smith :
Your options depend on several things depending on where you live. If you can show that the wiring is so old that it constitutes a fire hazard, the city might force him to fix it as a liability issue.

Check the local rental legalities and the wording on your lease. Usually, you can't withhold rent, but again, maybe if you show that it's a fire hazard, you might be able to get out of the lease.

But then again, I can't speak to the laws in your area. Check with the building inspection department in your city. They deal with this kind of thing all the time.
Nov 4, 2009 4:01 PM
Guest :
no it is not leagal to mix voltages
Mar 11, 2010 12:28 PM
Guest :
i am living in an apartment building... my plastic shower wall developed a crack that eventually progressed to a small hole that has revealed a live electrical outlet. i am wondering if it is legal to cover a live electrical outlet, build a shower/tub over a such an outlet, or if electrical outlets are allowed to be underneath/within 4 ft of a water source.
May 9, 2010 8:15 AM
Guest :
very brief but informative
Nov 5, 2010 2:30 AM
Guest :
my problem is .... i have just finish my training in BWI(Building Wiring Installation) and that takes about 2 months.. i just dont know how to get started wiring a building... plis help me find the answer to my problems:
1. Am i Authorized to put wire on a building even though i just got my training... i know certain standards.
2. Who are called only electrician?
3. If i have my NCII (National Certificate II) in BWI.. can i wire a building freely?
4. What do a building need for it to be ready to installed wires ...(electricity) does it need permit plis specify all the requirement.

Mar 7, 2011 5:39 AM
Guest :
sure
Jan 23, 2012 6:05 PM
Guest :
what is code on service entrance. once the cable leaves the meter and enters the building . how many feet can i go before i enter the breaker box
12 Comments
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