Chapter 17 Electrical Plans

Links for Chapter 17 Circuit Design Symbols and Wiring Steps in Drawing Relate Web Sites

Circuit Design Place switches and outlets at convenient locations Outlets should be a maximum of 12’ apart and 6’ from an opening Keep outlets accessible Keep an outlet in the hallway and close together in kitchen

Circuit Design Kitchen, bathroom, laundry, and outdoor circuits require ground-fault interrupter (GFI) Exhaust fan needed in bathroom Ceiling lights are common in children’s bedrooms Place a light over the sink in the kitchen

Circuit Design Place switches so they are near lights Locate lights in closets or alcove Use 220-volt outlets in a shop Light stairways well Use exterior lights to illuminate outside areas

Energy Conservation Keep outlets at a minimum on outside walls Use a back draft fan or automatic damper to limit air leakage Use timed thermostats to control heating and cooling automatically Run outside wires along on bottom plate

Energy Conservation Select energy-efficient appliances Use fluorescent lights whenever possible Caulk and seal around all light and convenience outlets Use recessed lights with insulation cover (IC)

Home Automation Automation is a method of controlling and operating mechanical devices without human intervention Consider an in-home theater Computerize lighting, heating, and security Structured wiring is used for in-home computer networks

Electrical Design Considerations Entry - One light controlled by a switch and GFI outlet Patio/Porch - Lighting and GFI outlets Living area - Ceiling light/fan and outlets Dining room - Switch-controlled ceiling light Kitchen - Outlets above the counter, for appliances, and adequate lighting

Electrical Design Considerations Bedrooms - Lighting in room and closets with outlets Bathrooms - GFI outlets, ceiling lights and fans Laundry - Ceiling lights with 120- and 220-volt outlets Smoke detectors - One in each sleeping area and on each story

Electrical Design Considerations Telephones - Located in kitchen, office, and master bedroom Television, cable, stereo, security - Usually wired by a specialist Computer - Wired for a computer network to maximize printing and file-sharing

Universal Electrical Installations Switch Location - Place 2’-6” above floor Convenience Outlets - 15” above the floor and about 8’ apart Lighting - Provide lighting that is controlled by dimmer switches Communications - Provide additional phone jacks and an intercom system if needed

Electrical Symbols All electrical symbols should be drawn with a 1/8” circle Symbols and lines should not clutter drawing Switches are drawn perpendicular to a wall Draw lines with a French curve Local notes may be applied in special situations

Electrical Layouts

Electrical Layouts

Wiring Specifications Typical residential service is 200 amps Service can be distributed overhead or underground Locate meter on garage or exterior side wall Locate the distribution panel in garage or close to heavy load devices

Drawing Electrical Plans Letter all switch locations and draw all fixture locations Draw electrical circuits or switch legs with dashed line Place electrical outlets Add local notes

Related Web Sites Audio Video Environment - www.avenow.com Leviton- www.leviton.com/ Nutone- www.nutone.com On Q Home Wiring Systems- www.onqtech.com SquareD - www.squared.com