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electrical codes are in target to protect homeowners and base residents. These general guidelines will give you the basics of what electric inspectors are looking for when they review both remodeling projects and new installations. Most local codes are based on the National Electrical Code ( NEC ), a document that lays out needed practices for all aspects of residential and commercial electrical installation. The NEC is revised every three years—2014, 2017, and then forth—and occasionally there are important changes to the Code. so make certain that your sources of information are based on the most late Code. The code requirements listed here are based on the 2017 NEC .

Most local codes follow the National Electrical Code ( NEC ), but there can be variances. The local code always takes precedence over the NEC when there are differences, thus be surely to check with your local building department for the particular code requirements for your situation .

much of the NEC involves requirements for general electric installation that apply to all situations, but there are besides particular requirements for person rooms .


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Because of the presence of water, bathrooms have very cautiously defined requirements. With their lights, vent fans, and outlets that may office hairdryers and early appliances, bathrooms use a lot of world power and may need more than one circuit .

  • The outlet receptacles must be served by a 20-amp circuit. The same circuit can supply the entire bathroom (outlets plus lighting), provided there are no heaters (including vent fans with built-in heaters) and provided the circuit serves only a single bathroom and no other areas. Alternatively, there should be a 20-amp circuit for the receptacles only, plus a 15- or 20-amp circuit for the lighting. 
  • Vent fans with built-in heaters must be on their own dedicated 20-amp circuits.
  • All receptacles in bathrooms must have ground-fault circuit-interrupter (GFCI) protection. 
  • A bathroom requires at least one 120-volt receptacle within 3 feet of the outside edge of each sink basin. Duel sinks can be served by a single receptacle positioned between them.
  • Light fixtures in the shower or bath area must be rated for damp locations unless they are subject to shower spray, in which case they must be rated for wet locations.
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The kitchen uses the most electricity of any room in the house. Fifty years ago, a kitchen might have been served by a one electric circuit, but today, a newly installed kitchen with criterion appliances requires at least seven circuits and often more .

  • Kitchens must have at least two 20-amp 120-volt “small appliance” circuits serving the receptacles in the countertop areas. These are for portable plug-in appliances.
  • An electric range/oven requires its own dedicated 120/240-volt circuit.
  • The dishwasher and garbage disposal both require their own dedicated 120-volt circuits. These can be 15-amp or 20-amp circuits, depending on the electrical load of the appliance (check the manufacturer’s recommendations; usually 15-amps is sufficient). The dishwasher circuit requires GFCI protection, but the garbage disposal circuit does not—unless the manufacturer stipulates it. 
  • The refrigerator and microwave each require their own dedicated 120-volt circuits. The amperage rating should be appropriate to the electrical load of the appliance; these should be 20-amp circuits. 
  • All countertop receptacles and any receptacle within 6 feet of a sink must be GFCI-protected. The countertop receptacles should be spaced no more than 4 feet apart. 
  • Kitchen lighting must be supplied by a separate 15-amp (minimum) circuit.

Living Room, Dining Room, and Bedrooms

Standard living areas are relatively modest world power users, but they have clearly defined electric requirements. These areas are generally served by standard 120-volt 15-amp or 20-amp circuits that may serve more than one room .

  • These rooms require that a wall switch is placed beside the entry door of the room so that you can light the room upon entering it. This switch can control either a ceiling light, a wall light, or a receptacle for plugging in a lamp. The ceiling fixture must be controlled by a wall switch rather than a pull chain.
  • Wall receptacles may be placed no farther than 12 feet apart on any wall surface. Any wall section wider than 2 feet must have a receptacle.
  • Dining rooms usually require a separate 20-amp circuit for one outlet used for a microwave, entertainment center, or window air conditioner.


extra concern is needed in stairways to ensure all of the steps are lighted properly to minimize the luck field-grade officer falling .

  • Three-way switches are required at the top and bottom of each flight of stairs so that lights can be turned on and off from both ends. 
  • If the stairs turn at a landing, you may need to add additional lighting fixtures to make sure all areas are illuminated. 
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These areas can be long and want adequate ceiling lighting. Be sure to place enough ignition so shadows are not cast when walking. Remember, hallways much serve as get off routes in the event of emergencies .

  • A hallway over 10 feet long is required to have an outlet for general purpose use.
  • Three-way switches are required at each end of the hallway, allowing the ceiling light to be turned on and off from both ends. 
  • If there are more doors served by a hallway, such as for a bedroom or two, you may want to add a four-way switch near the door outside of each room.


Closets come with many rules regarding fastness character and placement .

  • Fixtures with incandescent light bulbs (which get very hot) must be enclosed with a globe or other cover and cannot be installed within 12 inches of any clothes storage areas (or 6 inches for recessed fixtures).
  • Fixtures with LED bulbs must be at least 12 inches from storage areas (or 6 inches for recessed).
  • Fixtures with CFL (compact fluorescent) bulbs may be within 6 inches of storage areas.
  • All surface-mounted (not recessed) fixtures must be on the ceiling or the wall above the door.

Laundry Room

The electrical needs of a laundry room will vary, depending on if the clothes dry is electric or boast .

  • A laundry room needs at least one 20-amp circuit for receptacles serving laundry equipment; this circuit can supply a clothes washer or a gas dryer.
  • An electric dryer needs its own 30-amp, 240-volt circuit wired with four conductors (older circuits often have three conductors).
  • All receptacles must be GFCI-protected.


As of the 2017 NEC, newly constructed garages need at least one dedicated 120-volt 20-amp circuit that serves lone the garage. This tour may besides ability receptacles mounted on the exterior of the garage .

  • Inside the garage, there should be at least one switch controlling lighting. It is recommended that three-way switches be installed for convenience between the doors.
  • Garages must have at least one receptacle, including one for each car space.
  • All garage receptacles must be GFCI-protected.
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extra Requirements

AFCI requirements. The NEC requires that virtually all branch circuits for lighting and receptacles in a home must have arc-fault circuit-interrupter ( AFCI ) protection. This is a form of security that guards against sparking ( arcing ) and thereby reduces the chance of fire. bill that the AFCI requirement is in addition to whatever GFCI protection is required—an AFCI does not replace or eliminate the motivation for GFCI protection .

AFCI requirements are enforced by and large in new construction—there is no necessity that an existing arrangement must be updated to comply with new-construction AFCI requirements. however, as of the 2017 NEC revision, when homeowners update or replace fail receptacles or other devices, they are required to add the AFCI auspices at that location. This can be done in respective ways :

  • A standard circuit breaker can be replaced with a special AFCI circuit breaker. This is a job for a licensed electrician. Doing so will create AFCI protection for the entire circuit. 
  • A failing receptacle can be replaced with an AFCI receptacle. This will create AFCI protection to only the receptacle being replaced. 
  • Where GFCI protection is also required (such as kitchens and bathrooms), a receptacle can be replaced with a dual AFCI/GFCI receptacle. 

Tamper-resistant (TR) receptacles. All standard receptacles must be tamper-resistant ( TR ) type. These include a built-in safety feature that prevents children from sticking items into the receptacle slots .

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