Electrical Systems Guide for Denver Homes
Expert information on home electrical systems, wiring, safety, lighting, and smart home installations for Denver homeowners.
Electrical Safety Warning
Electrical work is dangerous and can be fatal. Most electrical work in Denver requires permits and licensed electricians. Never attempt electrical work beyond simple tasks like changing light bulbs unless you're qualified and licensed.
Electrical Topics
Wiring Guide
Complete guide to home wiring including wire types, circuit requirements, panel upgrades, and when to rewire your Denver home.
Lighting Systems
Everything about residential lighting including fixtures, LED upgrades, outdoor lighting, and energy-efficient solutions.
Electrical Safety
Critical electrical safety information including code compliance, GFCI/AFCI protection, and preventing electrical hazards.
Critical Safety Warnings
Never DIY Major Electrical Work
CriticalElectrical work beyond changing light bulbs and outlets requires a licensed electrician. Denver requires permits for most electrical work.
Aluminum Wiring Hazard
HighHomes built 1965-1973 may have aluminum wiring, which is a fire hazard. Have it inspected and consider replacement.
Outdated Electrical Panels
HighFederal Pacific and Zinsco panels are fire hazards and should be replaced immediately. Common in older Denver homes.
Overloaded Circuits
ModerateFrequent breaker trips, dimming lights, or burning smells indicate overloaded circuits. Upgrade your electrical panel.
Common Electrical Projects & Costs
Electrical Panel Upgrade
Upgrade from 100A to 200A service. Required for modern appliances and EV charging.
GFCI Outlet Installation
Required in bathrooms, kitchens, garages, and outdoor areas for safety.
Whole-House Surge Protection
Protects expensive electronics from power surges. Recommended for Denver's frequent lightning.
Smart Home Wiring
Smart switches, outlets, and automation. Includes network wiring and control systems.
Recessed Lighting Installation
Modern LED recessed lights. Includes cutting ceiling, wiring, and installation.
EV Charger Installation
240V circuit for electric vehicle charging. May require panel upgrade.
Understanding Your Electrical System
Main Components
- Service Entrance: Where power enters from utility lines (100A, 150A, or 200A service)
- Electrical Panel: Main breaker box distributing power to circuits
- Branch Circuits: Individual circuits for different areas/appliances
- Grounding System: Safety system to prevent shocks and fires
When to Upgrade
Consider electrical upgrades if you experience:
- • Frequent circuit breaker trips
- • Flickering or dimming lights
- • Outlets that don't work or spark
- • Burning smell from outlets or panel
- • Two-prong outlets (ungrounded)
- • Adding major appliances or EV charger
- • Home built before 1980
- • Planning major renovation
Denver Electrical Code Requirements
GFCI Protection
Required in bathrooms, kitchens (within 6 ft of sink), garages, basements, outdoor areas, and crawl spaces. Prevents electrocution.
AFCI Protection
Required in bedrooms, living rooms, and most other areas. Prevents electrical fires from arc faults in wiring.
Permits Required
Denver requires permits for panel upgrades, new circuits, major repairs, and most electrical work. Only licensed electricians can pull permits.