Introduces residential wiring practices and procedures. Topics include: residential circuits, print reading, National Electrical Code, wiring materials, determining the required number and location of lighting/ receptacles and small appliance circuits, wiring methods (size and type conductors, box fill calculations and voltage drop), switch control of luminaries and receptacle installation including bonding, GFCI and AFCi circuits, special purposes outlets- ranges, cooktops, ovens, dryers, water heaters, sump pumps, etc., and sizing OCPD’s (circuit breakers and fuses).
| Competency | After completing this section, the student will: |
| Residential Circuits |
| Load calculations | Determine square footage.
Calculate the requirements for general lighting.
Determine the appropriate number of convenience and appliance outlets for each separate circuit.
Determine minimum number of lighting branch circuits required.
Calculate individual circuit load.
Compute the size of service entrance conductors.
Balance the total load per phase (single phase).
Calculate small appliance loads.
Calculate the load for laundry circuits.
Calculate the load for special-purpose circuits. |
| Installation | Install circuit breakers in panel.
Install main service panel.
Ground service entrance equipment.
Discuss installation of the temporary service entrance.
Install main service disconnect when applicable. |
| Overhead service | Ground service entrance equipment.
Install mast-type, thru-the-roof, or SEU service entrance.
Install main service disconnect.
Install service entrance cable to service drop.
Install main service panel.
Install circuit breakers in panel. |
| Underground service (includes demonstration) | Ground service entrance equipment.
Install main service panel.
Discuss installation of underground service entrance. |
| Mobile home service | Ground service entrance equipment.
Discuss installation/connection of mobile home service.
Install circuit breakers in panel. |
| Flush and surface mounting of switch boxes | Install (bar-hangar) mounted box.
Install flush mount switch and outlet box for a drywall, lath or plaster wall, or paneled wall.
Install flush mount switch and outlet boxes for a masonry wall.
Install gang boxes.
Install outlet boxes for receptacles and switches in existing walls. |
| Flush and surface mounting of receptacle boxes | Install surface mount boxes.
Install octagon outlet box.
Install underground, watertight box.
Rough in the circuit for a device controlled by two 3-way switches with feed to the switch box.
Rough in the feed to the device outlet box.
Install device controlled by two 3-way switches and one 4-way switch with feed to a 3-way switch.
Rough in the circuit for a device controlled by two 3-way switches and one 4-way switch with feed to the device.
Rough in the circuit for a device controlled by two 3-way switches and two 4-way switches with feed to a 3-way switch.
Rough in duplex receptacle circuits with two 3-way controlling one-half of each of two duplex receptacles.
Rough in cables for a single pole switch controlling one or more lights/devices with a feed to the switch box.
Rough in cables for a single pole switch controlling one or more lights/devices with a feed to the light/device box.
Rough in circuit for a single pole switch controlling three lights or devices with feed to the end light device box.
Rough in circuit for two 3-way switches controlling one device using conduit and 4-inch square boxes with plaster rings. |
| Small appliance circuits | Rough in armored cable to outlet box.
Rough in nonmetallic cable in outlet boxes.
Rough in cable or conduit for branch circuits. |
| Special-purpose circuits | Rough in 120- or 240-volt circuits to distribution panel using nonmetallic sheathed cable.
Rough in line voltage thermostat wiring.
Rough in a circuit for a split-circuit duplex receptacle. |
| Low voltage circuits | Rough in the circuit for a door chime system.
Rough in low-voltage thermostat wiring.
Rough in a residential telephone wiring system.
Rough in a residential CATV wiring system. |
| Making taps | Install surface raceways.
Connect 120/240-volt circuits to circuit breaker panel using non-metallic cable.
Discuss swimming pool electrical considerations (workmanship, safety, and trim-out). |
| Underground wiring and sub-feeders | Discuss underground conduit installation methods.
Discuss direct burial cable.
Run feeder cable from main service panel to auxiliary. |
| Add-on receptacles | Rough in cable between an existing box and a newly installed box. |
| Print Reading |
| Symbols | Identify components on a blueprint.
Identify branch circuits.
Calculate load requirements.
Determine locations of receptacles.
Estimate the amount of wiring materials. |
| Architectural and mechanical symbols | Identify typical architectural and mechanical symbols on building plans. |
| National Electrical Code |
| Function | Determine the function of the National Electrical Code. |
| Components | Identify the components of the National Electrical Code. |
| Local code requirements | Interpret local code requirements with the National Electrical Code. |
| Ampacities and conduit fills | Calculate the ampacities and conduit fills according to the National Electrical Code. |
| Ground fault interrupter | Determine ground fault interrupter requirements for a single-family residence. |
| Wiring Materials |
| Conductors and insulators | Determine proper conductors and insulators. |
| Wiring procedures | Demonstrate wiring procedures. |