Design may include freehand sketches and consultation of architectural product catalogs. The designer must consult the given floor plan and the National Electrical Code (NEC) and determine

• the number of general lighting circuits and the required wattage
• the number of small appliance circuits vs. dedicated individual appliance circuits and the required wattage
• total wattage and amperage requirements
• a distribution panel based on amperage requirements
• lights, types of switches, and switch locations
• outlet locations.

Design should consider

• lighting and occupant comfort
• decorative fixtures
• layers of light
• responsible energy usage.

Process/Skill Questions:

• What are some consequences of failing to follow NEC guidelines when designing an electrical system?
• What factors influence the location of switches and outlets?
• How is size and specification of the distribution panel determined?
• What factors influence the location of the distribution panel and meter base?
• How does lighting affect one’s enjoyment of a home?