Only 1 in 25 People Can Read Basic Electrical Plans. Can You?

By: Jacqueline Samaroo
Estimated Completion Time
5 min
Only 1 in 25 People Can Read Basic Electrical Plans. Can You?
Image: Youtube

About This Quiz

It’s shocking, isn’t it?! The level of exceptional skill and painstaking detail that goes into preparing architectural drawings and plans.

When it comes to architectural projects – big or small, amateur or professional – there are a wide array of technical plans and drawings that can be utilized for the job. These technical drawings and plans are not only particularly useful for the design and preparation parts of the project, they are also actually quite useful (and oftentimes essential) from start to finish.

In this clever quiz, the type of technical drawing that you will be answering questions about is the electrical plan. Electrical plans are technical drawings that can vary from being simple enough for the average person to understand, to being so complex that only a professional could make heads or tails of it.

Even basic electrical plans will take into account things like plot plans (which show the building’s location), floor plans (which show a floor by floor representation of the building), and also possibly various wiring diagrams as well. These basic electrical plans make use of several features to get the information across as plainly as possible; such as easy to read dimensions, clearly drawn lines, and also consistent notations and symbols.

Are you ready to prove that you’re a master architect? Then c’mon, let’s get started on this easy quiz.

Power Plant
Original
What symbol on an electrical plan is this?
Power Panel
On basic electrical plans, the symbol that represents power panels looks like a simple rectangle that is hatched with diagonal lines. Power panels most times fall under the subcategory of circuits and panels on architectural groupings.
Dimmer Switch
Panic Button Symbol
Floor Uplight
Bell
Original
What symbol on an electrical plan is this?
Floor Outlet
Light Outlet
Bell Symbol
On basic electrical plans, the symbol that represents a bell looks like an empty square that has a tiny circle in the middle of the right side. Buzzers are sometimes incorrectly designated with this symbol.
Quad Outlet
Single Pole Switch
Original
What symbol on an electrical plan is this?
Track Light
Single Outlet
Smoke Detector Symbol
Single Pole Switch
On basic electrical plans, the symbol that represents a single pole switch is simply just an inscription of the letter “S”. Single pole switches are the most common type of electrical switches in modern homes.

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GFCI Outlet
Original
What symbol on an electrical plan is this?
Special Power Outlet
Branch Circuit Concealed In Ceiling Or Wall
GFCI Outlet
On basic electrical plans, the symbol that represents power panels looks like a simple rectangle that is hatched with diagonal lines. Power panels most times fall under the subcategory of circuits and panels on architectural groupings.
Waterproof Switch
Fluorescent Light
Original
What symbol on an electrical plan is this?
Mini Spotlight
Fluorescent Light
Fluorescent lights are represented by a symbol that consists of a horizontal line that has two vertical lines attached to it – one at each end. Fluorescent lights are advantageous due to their relatively long lifespan.
Downlight - Recessed
Lamp Holder With Pull Switch
Refrigarator Outlet
Original
What symbol on an electrical plan is this?
Duplex Outlet
Four-Way Switch
Under Cabinet Light
Refrigerator Outlet
The symbol that represents a refrigerator outlet is a circle that has a triangle inside of it and two parallel horizontal lines on the right end. Many building codes actually require that refrigerators are connected to a dedicated circuit.

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Double Pole Switch
Original
What symbol on an electrical plan is this?
Buzzer Symbol
Double Pole Switch
The double pole switch has a symbol on electrical plans that is similar to the electrical symbol for a single pole switch. The only difference is that at the bottom right corner of the “S” there is a small (subscript) number “2.”
Wall Light
Floor Washer Light
Waterproof Downlight
Original
What symbol on an electrical plan is this?
Waterproof Downlight
Waterproof downlights are not particularly common in buildings but are still very useful. The symbol on electrical plans that is used for waterproof downlights is a circle that has the letters “WP’ written inside of it.
Pull Switch Symbol
Thermostat Symbol
Three-Way Switch
Clothes Dryer
Original
What symbol on an electrical plan is this?
Carbon Monoxide Detector Symbol
Clothes Dryer Outlet
Like refrigerators, other large appliances like clothes dryers will oftentimes have dedicated outlets and even dedicated circuits as well. The symbol on electrical plans that represents a clothes dryer outlet is a circle that has three parallel horizontal lines running through it and protruding out of the left side of the circle; as well as a subscript “CD” in the bottom right.
Push Button Symbol
Junction Box

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Duplex Outlet
Original
What symbol on an electrical plan is this?
Clothes Washer Outlet
Smoke Detector Symbol
Branch Circuit Concealed In Floor
Duplex Outlet
The symbol on electrical plans that represents a duplex outlet is a circle that has two parallel horizontal lines running through it. These lines extend out of the circle on the left side.
220-Volt Outlet
Original
What symbol on an electrical plan is this?
Branch Circuit Exposed
220-Volt Outlet
A 220-volt outlet is represented on electrical plans by a circle that has three parallel horizontal lines running through it and protruding out of the left side of the circle. This symbol is identical to a regular clothes dryer outlet, without the subscript “CD.”
Thermostat Symbol
Multiple Outlet
Four way Switch
Original
What symbol on an electrical plan is this?
Four-Way Switch
The four-way switch has a symbol on electrical plans that is similar to the electrical symbol for a single pole switch. The only difference is that at the bottom right corner of the “S” there is a small (subscript) number “4."
Blanked (Unused) Outlet
Directional Downlight - Recessed
Light Outlet

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Track Lighting
Original
What symbol on an electrical plan is this?
Fan Outlet
Pull Switch Symbol
Track Light
The symbol on electrical plans for a track light is one of the more relatively complex symbols. The symbol starts out looking like the symbol of a florescent light but it also has three smaller vertical lines connected and equal distances, with small circles on top of them.
Dish Washer Outlet
Buzzer
Original
What symbol on an electrical plan is this?
Push Button Symbol
Buzzer Symbol
The symbol on electrical plans that represents a buzzer is sometimes mistaken for a bell symbol or symbols that serve similar purposes. This symbol simply consists of a square that has a diagonal that protrudes from the outer bottom right corner.
Floor Outlet
Wall Light
Mini Spotlight
Original
What symbol on an electrical plan is this?
Pendant Light
Single Outlet
Mini Spotlight
A symbol that is not seen as regularly as many other on this list. The symbol on electrical plans that represents a mini spotlight is an arrow that points to the right, which touches a vertical line.
Lamp Holder With Pull Switch

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Dimmer Switch
Original
What symbol on an electrical plan is this?
Wall Up And Down Light
Blanked (Unused) Outlet
Special Power Outlet
Dimmer Switch
The dimmer switch has a symbol on electrical plans that is similar to the electrical symbol for a single pole switch. The only difference is that at the bottom right corner of the “S” there is a small (subscript) representation of the letters “DM."
Branch Circuit Concelled in Floor
Original
What symbol on an electrical plan is this?
Duplex Outlet With Switch
Three-Way Switch
Branch Circuit Concealed In Floor
The symbol on electrical plans that represents a branch circuit that is concealed in a floor is sometimes mistaken for the symbol for an exposed branch circuit. The symbol is simply a horizontal dashed line that has small dots in the spaces in-between.
Clothes Washer Outlet
Blank Outlet
Original
What symbol on an electrical plan is this?
Blanked (Unused) Outlet
A blanked (unused) outlet is represented by two similar symbols depending on the context. If the outlet is mounted in the ceiling, then the symbol is just a circle with the letter “B” inside and if it is wall mounted, then the symbol is the same but with just a horizontal line​ on the left of the circle.
Pilot Light Switch
Carbon Monoxide Detector Symbol
Waterproof Switch

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Floor Outlet
Original
What symbol on an electrical plan is this?
Power Panel
Clothes Dryer Outlet
Junction Box
Floor Outlet
When it comes to being represented on electrical plans, the general floor outlet has a very distinguishable symbol compared to the wide array of outlet symbols. It is a square, which contains a circle, which in turn contains a horizontal line that cuts it in half.
Carbon Monoxide
Original
What symbol on an electrical plan is this?
Carbon Monoxide Detector Symbol
On electrical plans, the symbol for carbon monoxide detectors is one that you can easily tell the purpose of at first glance. It is simply a square that has the letters “CO” inscribed in the center.
Quad Outlet
Duplex Outlet
Wall Light
Special Power Outlet
Original
What symbol on an electrical plan is this?
Multiple Outlet
Clothes Washer Outlet
Wall Up And Down Light
Special Power Outlet
While different variations of “special” power outlet symbols exist, there is a definite general symbol that can be used to encompass all of them if need be. This symbol is simply a circle that has a completely shaded triangle inside of it.

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Pull Switch
Original
What symbol on an electrical plan is this?
Floor Uplight
Pull Switch Symbol
A pull switch is represented by two similar symbols depending on the context. If the pull switch is mounted in the ceiling, then the symbol is just a circle the letter “S” inside and if it is wall mounted then the symbol is the same but with just a horizontal line on the left of the circle.
Lamp Holder
Duplex Outlet With Switch
Single Outlet
Original
What symbol on an electrical plan is this?
Downlight - Recessed
Pendant Light
Lamp Holder With Pull Switch
Single Outlet
The symbol on electrical plans that represents a single outlet is a circle that has one parallel horizontal line running through its center. This line extends out of the circle on the left side.
Directional Downlight
Original
What symbol on an electrical plan is this?
Thermostat Symbol
Directional Downlight - Recessed
Directional downlights are useful not only for general lighting but for aesthetic purposes as well. The symbol that represents it on an electrical plan is a circle that has two perpendicular lines – which create an arrow – resting on top of it. The arrow signifies the direction of the beam of light.
Fan Outlet
Waterproof Switch

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Floor wash Light
Original
What symbol on an electrical plan is this?
Floor Washer Light
Floor washer lights are – unlike most of the other lighting symbols in the quiz – rarely seen on electrical plans. The symbol for floor washer lights is a rectangle that sits on top of an arrow.
Waterproof Downlight
Pilot Light Switch
Duplex Outlet
Push Button
Original
What symbol on an electrical plan is this?
Refrigerator Outlet
220-Volt Outlet
Push Button Symbol
This is another symbol that often gets mixed up with similar symbols like the buzzer symbol and the bell symbol. On electrical plans, the push button is designated by a symbol that is a simple square with a sizable dot in the center.
Quad Outlet
Thermostat
Original
What symbol on an electrical plan is this?
Lamp Holder
Mini Spotlight
Thermostat Symbol
The thermostat symbol is seen in many plans of houses and buildings in the US and Europe. This symbol is simply represented by a square that has capital letter “T” written in the center of it.
Double Pole Switch

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Branched Circuit Concelled in Ceiling or Wall
Original
What symbol on an electrical plan is this?
GFCI Outlet
Branch Circuit Concealed In Ceiling Or Wall
While the name/description of what this symbol represents may be one of the longest in this quiz, the actual symbol itself is the easiest to draw. This symbol is simply a long horizontal line.
Special Power Outlet
Wall Up And Down Light
Downlight Recessed
Original
What symbol on an electrical plan is this?
Downlight - Recessed
The symbol of a recessed downlight on an electrical plan is quite possibly one of the simplest ones to draw but also one of the easiest to overlook as well. Why is this? Because it is simply a circle!
Light Outlet
Dimmer Switch
Single Outlet
Pendant Light
Original
What symbol on an electrical plan is this?
Single Pole Switch
Dish Washer Outlet
Pendant Light
Pendant lights are attractive lighting options that can actually allow a contrast of shadows and light in a room to create an intentional visual allure. The symbol on electrical plans for this is a circle that is bisected equally by a vertical line and a horizontal line – creating a cross and four equal separations of the circle.
Four-Way Switch

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Wall Light
Original
What symbol on an electrical plan is this?
Double Pole Switch
Wall Light
Wall lights are particularly more aesthetically pleasing in smaller rooms or rooms that have more natural lighting options. The symbol that represents this on electrical plans is a vertical line that is touched by a triangle (just the tip of the triangle). The triangle has a horizontal line down its middle.
Directional Downlight - Recessed
Branch Circuit Exposed
Panic Button
Original
What symbol on an electrical plan is this?
Bell Symbol
Track Light
Floor Uplight
Panic Button Symbol
While no one wants to have to use a panic button, it is always better to be safe than sorry. The symbol that represents panic buttons on electrical plans is simply a square that has the letters “PB” written in the middle of it.
Under Cabinet Light
Original
What symbol on an electrical plan is this?
Fluorescent Light
Power Panel
Under Cabinet Light
Under cabinet lights are most often seen in kitchens and to some lesser extent, bathrooms as well. This fixture is represented on electrical plans by a circle that is separated into two halves by a vertical line – one half is shaded and the other is left unshaded.
Multiple Outlet

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Light Outlet
Original
What symbol on an electrical plan is this?
Blanked (Unused) Outlet
Junction Box
Clothes Dryer Outlet
Light Outlet
A light outlet is represented by two similar symbols depending on the context. If it is mounted in the ceiling, then the symbol is just a blank circle; however, if it is wall mounted then the symbol is the same but just with a horizontal line on the left of the circle.
Smoke Detector
Original
What symbol on an electrical plan is this?
220-Volt Outlet
Smoke Detector Symbol
Smoke detectors are essential safety fixtures that can be found in commercial buildings and residential ones as well. The symbol that represents smoke detectors on electrical plans is a square that has the letters “SD” written in the middle of it.
Push Button Symbol
Three-Way Switch
Branch Circuit Exposed
Original
What symbol on an electrical plan is this?
GFCI Outlet
Branch Circuit Concealed In Floor
Floor Washer Light
Branch Circuit Exposed
The symbol on electrical plans that designates where an exposed branch circuit will be, is actually very similar to the symbols for a branch circuit that is concealed in a floor. The symbol for an exposed one is simply a dashed line that is made up of close and small dashes.

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Duplex Outlet with Switch
Original
What symbol on an electrical plan is this?
Duplex Outlet With Switch
The symbol on electrical plans that represents a duplex outlet with a switch is very similar to the symbol for a regular duplex outlet. It is a circle that has two parallel horizontal lines running through it and these lines extend out of the circle on the left side. The difference is that there is a small (subscript) “S” at the bottom right corner.
Buzzer Symbol
Fluorescent Light
Under Cabinet Light
Pilot Light Switch
Original
What symbol on an electrical plan is this?
Panic Button Symbol
Refrigerator Outlet
Pilot Light Switch
The pilot light switch has a symbol on electrical plans that is similar to the electrical symbol for a single pole switch. The only difference is that at the bottom right corner of the “S” there is a small (subscript) letter “P.P
Carbon Monoxide Detector Symbol
Lamp Outlet
Original
What symbol on an electrical plan is this?
Lamp Holder
A lamp holder is represented by two similar symbols depending on the context. If it is mounted in the ceiling, then the symbol is just a circle with the letter “L” inside of it; however, if it is wall mounted then the symbol is the same but just with a horizontal line on the left of the circle.
Branch Circuit Concealed In Ceiling Or Wall
Single Pole Switch
Floor Outlet

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Fan Outlet
Original
What symbol on an electrical plan is this?
Waterproof Downlight
Bell Symbol
Fan Outlet
A fan is represented by two similar symbols depending on the context. If it is mounted in the ceiling, then the symbol is just a circle with the letter “F” inside of it; however, if it is wall mounted then the symbol is the same but just with a horizontal line on the left of the circle.
Pull Switch Symbol
Wall Up and Down Light
Original
What symbol on an electrical plan is this?
Smoke Detector Symbol
Wall Up And Down Light
​Wall up and down lights are unique lights that are primarily used for aesthetic purposes, since the beam of light comes out of both the top and bottom of the fixture. The symbol that represents this fixture on electrical plans is a square that has a dot inside of it – very similar to a push button symbol.
Floor Washer Light
Buzzer Symbol
Floor Uplight
Original
What symbol on an electrical plan is this?
Dimmer Switch
Downlight - Recessed
Single Pole Switch
Floor Uplight
Floor uplights are small light fixtures that resemble miniature floor spotlights or simple small round discs. The symbol that represents floor uplights on an electrical plan is a circle that is cut into four equal parts by a horizontal line and a vertical line. The circle then has two quarter pieces – alternating ones – fully shaded.

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Three way Switch
Original
What symbol on an electrical plan is this?
Under Cabinet Light
Lamp Holder
Three-Way Switch
The three-way switch has a symbol on electrical plans that is similar to the electrical symbol for a single pole switch. The only difference is that as the bottom right corner of the “S” there is a small (subscript) number “3."
220-Volt Outlet
Waterproof Switch
Original
What symbol on an electrical plan is this?
Branch Circuit Concealed In Ceiling Or Wall
Branch Circuit Concealed In Floor
Waterproof Downlight
Waterproof Switch
The waterproof switch has a symbol on electrical plans that is similar to the electrical symbol for a single pole switch. The only difference is that at the bottom right corner of the “S” there is a small (subscript) representation of the letters “WP." These lights are used outdoors and in some bathrooms.
Dish Washer Outlet
Original
What symbol on an electrical plan is this?
Track Light
Dish Washer Outlet
Like other large appliances, dishwashers will oftentimes have dedicated outlets and dedicated circuits as well. The symbol on electrical plans that represents a clothes washer outlet is a circle that has a triangle inside of it and a protruding line to the left. It also has a subscript “DW” in the bottom right.
Duplex Outlet With Switch
Fluorescent Light

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Junction Box
Original
What symbol on an electrical plan is this?
Junction Box
A junction box is represented by two similar symbols depending on the context. If it is mounted in the ceiling, then the symbol is just a circle with the letter “J” inside of it; however, if it is wall mounted then the symbol is the same but just with a horizontal line on the left of the circle.
Mini Spotlight
Panic Button Symbol
GFCI Outlet
Quad Outlet
Original
What symbol on an electrical plan is this?
Dish Washer Outlet
Quad Outlet
The symbol on electrical plans that represents a quad outlet is a circle that has two parallel horizontal lines running through it – these lines extend out of the circle on the left side; and two vertical lines that run through these other lines.
Fan Outlet
Double Pole Switch
Clothes Washer
Original
What symbol on an electrical plan is this?
Clothes Washer Outlet
Like other large appliances, clothes washers will oftentimes have dedicated outlets and even dedicated circuits as well. The symbol on electrical plans that represents a clothes washer outlet is a circle that has a triangle inside of it and a protruding line to the left. It also has a subscript “CW” at the bottom right.
Pilot Light Switch
Clothes Dryer Outlet
Power Panel

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Lamp with Pull Switch
Original
What symbol on an electrical plan is this?
Directional Downlight - Recessed
Lamp Holder With Pull Switch
A lamp holder with a pull switch is represented by two similar symbols depending on the context. If it is mounted in the ceiling, then the symbol is just a circle that has the letter “L” inside and the letters “PS” as subscript at the bottom right. If it is wall mounted, then the symbol is the same but with just a horizontal line on the left of the circle.
Branch Circuit Exposed
Refrigerator Outlet
Multiple Outlet
Original
What symbol on an electrical plan is this?
Four-Way Switch
Bell Symbol
Multiple Outlet
The symbol on electrical plans that represents a multiple outlet is a circle that has two parallel horizontal lines running through it. These lines extend out of the circle on the left side and there is a subscript (small number) on the right lower side that shows the number of sockets.
Pendant Light
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