Cyber Monday Deal💥

Save 20% with a coupon CYBM20 on PRO Membership Plan and 30% on courses at EEP Academy! Learn from experienced engineers!

Home / Download Center / Electrical Engineering Books and Technical Guides / Electrical engineering guides / Guidelines to basic electrical wiring in your home and similar locations

Electrical wiring and symbols

Electrical symbols are used on home electrical wiring plans in order to show the location, control point(s), and type of electrical devices required at those locations. These symbols, which are drawn on top of the floor plan, show lighting outlets, receptacle outlets, special purpose outlets, fan outlets and switches.

Guidelines to basic electrical wiring in your home and similar locations
Guidelines to basic electrical wiring in your home and similar locations (on image: An example of electrical plan – click to expand)

Dashed lines are drawn between the symbols to denote which switches control specific lights or receptacles.

There are quite a few symbols used to represent the devices used in home electrical wiring but some of them are very similar, so care should be used when working with them!

Guidelines to electrical wiring around your home or other locations
Guidelines to electrical wiring around your home or other locations

An “outlet” is any point in an electrical system where current is taken out of the system in order to supply power to the attached electrical equipment. An outlet can be one of two basic types: A “Receptacle” outlet or a “Lighting” outlet.

A receptacle outlet is one in which one or more receptacles are installed for the purpose of attaching “plug and cord-connected” type devices, and a lighting outlet is one intended for a direct-wired connection to a lamp holder, luminaire (lighting fixture) or ceiling fan.

Special-purpose outlets also exist. These may be dedicated to a specific type of equipment such as a furnace, wall oven, garbage disposal or another similar piece of equipment.

How electricity travels throughout the home?

Electricity is supplied to your home through your electric utility’s overhead or buried power lines. Before entering your home, electricity passes through a watt-hour meter which measures the amount of electricity used.

It then continues into your house through the Service Entrance Panel (also called a “load center”), where circuit protection devices such as circuit-breakers or fuses are located.

Duplex receptacles
Duplex receptacles

Electricity is then distributed throughout your home using branch circuits to provide power to appliances and lights through receptacles, switches, and fixtures.

Title:Basic guidelines to electrical wiring around your home – Perdue University
Size:2.9 MB
Download:Right here | Video Courses | Membership | Download Updates
Basic guidelines to electrical wiring around your home
Basic guidelines to electrical wiring around your home

Premium Membership

Get access to premium HV/MV/LV technical articles, advanced electrical engineering guides, papers, and much more! It will help you to shape up your technical skills in your everyday life as an electrical engineer.
Cyber Monday Deal 💥 - Save 20% on Pro Membership Plan and 30% on courses at EEP Academy with a coupon CYBM20

More Information


  1. Adeagbo John
    Jan 20, 2021

    This information is very useful and I commend those working towards the progress of the portal and giving us vital information. Pls I want to request how can this PDF be downloaded

  2. Mike A. Ezugwu
    Jan 13, 2021

    I need information on Planning, Design and Installation of Electrical house wiring. I need to know more about the Codes governing House wiring, Cable sizing, Breaker sizing etc.


  3. suleyman barsakcıoglu
    Nov 07, 2020

    I am home project control engineer in the republic of northern cyprus. i want the program new please can you send it to me e mail address

  4. Drameri Emmanuel
    May 13, 2020

    The notes is so helpful.thanks for sharing it

  5. Nazib
    Jan 21, 2019


  6. kang kelvin che
    Apr 17, 2018

    where can i get an intermedial switches

  7. Keval Velani
    Nov 11, 2017

    Thank You for sharing documents…

    Nov 06, 2017


  9. Momodu S I
    Aug 06, 2017

    Why is 12v DC not use as control voltage in substations? Especially mv Substations.

    • Edvard
      Aug 06, 2017

      24V and 48V DC are standard voltage levels for protection relay supply and control relays.

    • mudassar hussan
      Nov 28, 2017

      Mostly 110 volt Dc supply used. 24 volt & 48 volt also used. Main purpose is to reduced the current level & reduced the cable size too in protection circuit.

  10. Ghazanfar Ali Khan
    Jul 18, 2017

    Can some one explain how 3rd harmonics are mitigated in Delta wound tertiary winding?

    Jun 13, 2017

    i appreciated the basic teaching you have just impacted in me please connect me to you so i can learn more and be working for you

  12. Vikram Desai
    Apr 28, 2017

    Dear Sirs,
    I am power engineer and spend whole my tenure in the field of electrical energy. I have many such kind of articles whic can enhance one’s knowledge. If you permit me I will be useful to you.
    Vikram desai

    • Ali Alrammah
      May 17, 2017

      Great can you send the articals

    • Poornima Devi
      Jul 18, 2017

      Sir, please share the useful articles you have so that many electrical passionate people can be benefited from them.

      Thank you

  13. hiwa
    Mar 08, 2017

    excellent job well done for sharing these very usefull infos thanks wish you succes

  14. anthony
    Nov 14, 2016

    it is useful and thanks to all

  15. ahmed wadi
    Nov 06, 2016

    iam searching about smart grid

Leave a Comment

Tell us what you're thinking. We care about your opinion! Please keep in mind that comments are moderated and rel="nofollow" is in use. So, please do not use a spammy keyword or a domain as your name, or it will be deleted. Let's have a professional and meaningful conversation instead. Thanks for dropping by!

sixty eight  −    =  63

Learn How to Design Power Systems

Learn to design LV/MV/HV power systems through professional video courses. Lifetime access. Enjoy learning!

Subscribe to Weekly Newsletter

Subscribe to our Weekly Digest newsletter and receive free updates on new technical articles, video courses and guides (PDF).
EEP Academy Hand-Crafted Courses
ETAP technical webinars