Plan Symbol Outlet Inside of Drawer
five Common Electrical Symbols All Builders Need to Know
Jul xvi, 2020
Heating and ac systems, plumbing, electrical outlets and wiring (including lighting), and other mechanical systems are typically detailed in MEP (mechanical, electric, plumbing) plans, and installed by specialists in their field. While builders don't need to understand everything in the MEP plans, builders should exist aware of how these systems will operate and where the wires and pipes will be placed.
Architects also include data nigh outlets and switches in their power and data plans—which are role of the blueprints package—though these are mostly not as comprehensive equally MEP plans. Some elements of these plans will have more direct implications for builders as recessed lighting, ceiling fans, and features that take to exist blocked (surrounded by a small frame) for support.
Of the different systems on MEP plans, yous'll want to pay special attention to the electrical elements and their placement. Jordan Smith explains in his Introduction to Reading Blueprints course :
"The homeowner is going to interact with electric much more than they're going to collaborate with things like plumbing lines or HVAC ductwork. In that location's going to be many points throughout the house where the homeowner's going to interact with light switches, with appliances and other things that are fed through the electrical arrangement. Then the architect pays a lot of attending to the electrical pattern."
While installation of the wiring and outlets will be left to an electrician, here are mutual blueprint symbols . These will typically also be listed in a fable, so information technology isn't necessary to memorize them all.
Common Electrical and Lighting Symbols
i. Duplexes
A circle off of the wall and connected to information technology by ii parallel lines represents a typical outlet (or receptacle) with two sockets. Abbreviations and numbers next to the duplex provide additional data.
For example, GFCI indicates a ground-mistake excursion interrupter (an outlet with a built-in fast acting circuit breaker that prevents electric shocks and volition typically be used with outlets near water, in bathrooms and kitchens). The number 220 next to a duplex indicates it's a 220-volt outlet, commonly used for appliances that require 220 volts, like ovens and dryers.
Finally, if you see a square around a duplex or a quad (that is an outlet with 4 sockets) that indicates it'south a floor receptacle.
two. Lights and fans
The basic symbol for most lights is a circumvolve and, equally with duplexes, variations on how it is fatigued and abbreviations next to it convey additional and essential data. The key on the floor plans will explicate the particular symbols used on any projection.
For example, half of the circle may be shaded black to indicate it's an LED wall washer; the letter Due west side by side to it indicates it is intended for a wet area (like a bath). A recessed light is sometimes represented past a diagonal slash across the circle, though in other plans the letter R next to the circle is used to bespeak that it should be recessed.
Not all lights are represented by circles, however. A line with half-circles on each end may exist used for nether-chiffonier lighting, and a line with small circles on either side is frequently used for strip lighting.
Ceiling fans are often too represented by a circle, though with two angled lines extending off of information technology, symbolically representing (at least in a very loose way) the blades of a fan. A ceiling fan may likewise exist indicated by a circle with 3 blades extending out from it. As Jordan explains, the lighting symbols are of special concern for builders because you have to make sure that y'all put blocking—that is, framing members—in all of these places to back up ceiling fans and fixtures.
iii. Switches
When you see something that looks similar a dollar sign on a plan, though with only one vertical bar, that's the common symbol for a switch. (Sometimes the bar is omitted and you'll see only an Due south.) If it doesn't have whatever other notation adjacent to information technology, an S alone represents the most basic of switches, a single-pole ane, but of class in that location'due south a huge variety of switches in gimmicky houses.
Three- or four-way switches, with one light controlled past multiple switches, are indicated by a small numeral next to the S. Dimmer, fused, remote-controlled, and weather-proofed switches, to choice a few examples, are typically indicated past abbreviations next to the S.
4. Appliances
Outlets for larger appliances are ofttimes indicated by a triangle. Abbreviations side by side to them volition betoken which appliance they are intended for: CD (clothes dryer), CW (clothes washer), DW (dish washer), R (fridge), etc. A television is typically indicated past the letters TV in a box.
v. Wire Runs
Curving dashed lines on a floor plan, connecting switches and fixtures bespeak (roughly) the road of wiring throughout the firm. These wire runs are not precisely located on the floor plan—and they don't have to exist. It will be the chore of a principal electrician to figure out the most appropriate placement for wires.
The dashed lines on the flooring plan are mostly for yous, as the builder, to better empathise how the futurity homeowner will live in the infinite, and which switches volition correspond to which lights or other fixtures. At those points where you see one dashed line spring over some other, it doesn't necessarily mean they will meet at that exact spot. Instead the plan is indicating to you simply that the two wire runs volition pass by each other at some point in the room.
MT Copeland offers video-based online classes that give y'all a foundation in construction fundamentals with real-world applications. Classes include professionally produced videos taught by practicing craftspeople, and supplementary downloads like quizzes, blueprints, and other materials to help yous master the skills.
Source: https://mtcopeland.com/blog/guide-to-common-electrical-blueprints-symbols/
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