Transfer Switches and Electrical Service in Evergreen, Colorado
This page provides general educational information based on public data about housing in Evergreen. Every home is different. The information here reflects what was typical when homes were originally built, not necessarily what is in your home today. Nothing on this page should be taken as a diagnosis or recommendation for your specific property. The only way to know the condition of your home's electrical system is a professional inspection. Call (303) 775-3221 or request a free estimate.
When the power goes out in Evergreen, it can stay out for days. If you have a generator, a transfer switch is the only legal and safe way to connect it.
Evergreen is a mountain community in unincorporated Jefferson County, spread across steep terrain at around 7,200 feet. Power outages from storms, high winds, ice loading on lines, and fallen trees are common at this elevation. Utilities can also shut off power entirely during high fire-risk conditions. In December 2025, Xcel de-energized over 50,000 customers in the foothills during a wind event. Homes on wells lose water when the power goes out. A manual transfer switch is the legal and safe way to run a generator during these outages.
Transfer Switches
A manual transfer switch isolates your home from the grid before generator power flows in. Without one, running a generator connected to your panel sends power back out through the utility lines. This is called backfeeding. It violates electrical code and utility rules, it's dangerous to line workers, and it can damage your equipment when grid power returns unexpectedly.
A transfer switch lets you select which circuits the generator powers: furnace, refrigerator, well pump, lights, a few outlets. The generator runs those circuits while the rest of the house stays off. When grid power returns, you switch back and disconnect the generator.
How Evergreen Was Built
Evergreen started as a summer cabin community in the 1920s. Permanent development picked up in the 1950s and 1960s with A-frames, rustic cabins, and small ranch homes. The biggest growth came in the 1970s and 1980s. Custom homes on larger lots followed through the 1990s and 2000s in areas like Hiwan and Evergreen Meadows. The median home was built around 1980, and over 30% of the housing predates 1970.
What That Means for Your Home
The panel situation
Homes from the 1960s and 1970s may have FPE, Zinsco, or split-bus panels. Homes from the 1980s may have Challenger panels. All of these have documented concerns. Homes built since the 1990s generally have panels from reputable manufacturers.
The capacity gap
Mountain homes often have higher electrical demands than a typical suburban home: well pumps, electric heating in some cases, and longer distances from the transformer. A 100-amp panel from the 1970s may not handle modern loads. An evaluation tells you where you stand.
Electrical Code and Permits
Evergreen is unincorporated Jefferson County. Permits go through the Jefferson County Building Division, which adopted the 2023 National Electrical Code (NEC). The area is split between Xcel Energy and CORE Electric Cooperative depending on location. Evergreen Fire/Rescue covers the area and enforces wildfire codes. The entire community is in a designated wildland-urban interface zone.
What's changed since your home was built
| NEC Edition | Key Changes | What It Means |
|---|---|---|
| NEC 2023 | Whole-home surge protection required. Expanded arc-fault circuit interrupter (AFCI) and ground-fault circuit interrupter (GFCI) protection. Emergency disconnect required at exterior. | New panels must include surge protection, arc-fault and ground-fault breakers where required, and a way for first responders to cut power from outside. |
| NEC 2020 | GFCI expanded to kitchens and laundry. Outdoor emergency disconnect added. | More wet-area protection. Firefighters can kill power without entering the home. |
| NEC 2017 | AFCI expanded to nearly all living spaces. | Arc-fault protection moved beyond bedrooms to cover most of the house. |
| NEC 2014 | AFCI required in kitchens, laundry, and bedrooms. | Major expansion of fire-prevention technology in branch circuits. |
| Pre-2014 | Any code edition before 2014. | No AFCI, no GFCI, no surge protection, no emergency disconnect. |
When electrical work is performed, the new work has to meet the current 2023 standard.
Permits and inspections
Transfer switch installations, panel replacements, and service upgrades all require a Jefferson County electrical permit and a final inspection. We handle all of that.
Insurance and Your Panel
Colorado's insurance market has tightened since the 2021 Marshall Fire. In mountain communities near the wildland-urban interface, carriers evaluate the electrical system alongside wildfire exposure and access conditions.
Some carriers specifically ask about FPE Stab-Lok and Zinsco panels on their applications. Other panels may draw attention based on age and condition. Replacing an aging panel before it becomes an issue gives you the most control.
Common Electrical Issues in Evergreen
No transfer switch with a generator
Many Evergreen homeowners have generators but no transfer switch. Running a generator without one is backfeeding: a code violation, dangerous, and capable of damaging equipment. A transfer switch installation is the fix.
Aging panels in 1970s homes
Homes from the 1970s may have FPE or Zinsco panels with documented defect rates. These panels can't accept modern AFCI or GFCI breakers. A panel replacement brings the home up to current safety standards.
Challenger panels in 1980s homes
Homes from the 1980s may have Challenger panels. Early models share the Zinsco bus bar design. Later models are aging out of their expected service life. These panels come up during home inspections and can affect insurance.
Kittredge and Idledale
Kittredge and Idledale are small communities along Bear Creek between Morrison and Evergreen. Kittredge has about 70% of homes built before 1980. Idledale has about 84% built before 1980, with a median year built around 1958. Both communities face the same outage and panel issues as Evergreen. Permits go through Jefferson County. We serve both.
Wildfire zone and exterior equipment
Evergreen is in a designated wildland-urban interface. Defensible space rules affect where exterior electrical equipment gets placed. Generator pads and fuel tanks need to be sited with clearance from the home and from combustible vegetation. We account for these requirements during the estimate.
Rocky ground
The granite bedrock under much of Evergreen can make standard grounding methods harder. There are alternative approaches that work in rocky soil, and the county inspects grounding as part of any service upgrade.
Capacity for mountain living
Well pumps, electric heat, and longer distances from the transformer all add to the load. A service upgrade from 100 to 200 amps gives a home room for current and future demands.
Frequently Asked Questions
Why do Evergreen homes need transfer switches?
Evergreen is in a mountain area where power outages from storms, high winds, and ice are common at this elevation. Xcel Energy can also de-energize lines during high fire-risk conditions. A manual transfer switch lets you run a generator safely without backfeeding the grid. Backfeeding violates electrical code and utility rules, and it's dangerous to utility line workers.
How much does a transfer switch cost in Evergreen?
It depends on the setup. A transfer switch for essential circuits (furnace, fridge, well pump, lights) is a different scope than a whole-house solution. We provide free on-site estimates.
Do I need a permit for a transfer switch in Evergreen?
Yes. Evergreen is unincorporated Jefferson County. Electrical permits go through Jefferson County Building Division. We handle the permit and the inspection.
Could my panel affect my homeowners insurance in Evergreen?
It can. In mountain communities near the wildland-urban interface, carriers evaluate the overall condition of the electrical system alongside wildfire exposure. Some carriers specifically ask about FPE and Zinsco panels on their applications. Replacing an aging panel before it becomes an issue gives you the most options.
Do you serve Kittredge and Idledale?
Yes. Kittredge and Idledale are small communities along Bear Creek between Morrison and Evergreen. Both have older homes on similar electrical systems. Permits go through Jefferson County. We serve both communities.
Do Evergreen homes also need panel replacements?
Some do. Homes from the 1960s-70s may have FPE, Zinsco, or other aging panels. Homes from the 1980s may have Challenger panels. But the transfer switch is often the more pressing need in Evergreen because of the outage risk. A panel evaluation tells you where you stand on both.
Get It Checked
Whether you need a transfer switch, a panel evaluation, or both, the first step is the same: we come out, look at what you have, and tell you what makes sense.
There's no charge for the estimate. Learn more about what a service change involves.
Sources
- U.S. Consumer Product Safety Commission. "Commission Closes Investigation Of FPE Circuit Breakers And Provides Safety Information For Consumers." 1983.
- Dr. Jesse Aronstein, P.E. Independent testing of FPE Stab-Lok and Zinsco circuit breakers per UL 489 standard.
- Richmond National Insurance Company. Small Habitational Supplemental Application (RNGL_APP_004_SBGC).
- Jefferson County Building Division. Electrical permit requirements and 2023 NEC adoption.
- Jefferson County. Evergreen Area Plan. Development history and design guidelines.
- Evergreen Fire/Rescue. Current Code Adoptions and Standards. WUI designation and fire codes.
- Evergreen Fire/Rescue. Defensible Space and Home Hardening guidelines.
- Xcel Energy. Public Safety Power Shutoff event, December 2025. Jefferson County coverage.
- CORE Electric Cooperative. Service Area. Southern and western Evergreen coverage.
- Point2Homes / U.S. Census Bureau. Evergreen housing stock by decade.
This page provides general educational information. Every home is different. Nothing on this page should be taken as a diagnosis or recommendation for your specific property. The only way to know the condition of your home's electrical system is a professional inspection. Dunlap Electric Company, LLC · Evergreen, Colorado · Electrical Contractor License #8223. Jesse Dunlap, Colorado Licensed Master Electrician, in the trade since 1998.
Need a Transfer Switch or Panel Inspection in Evergreen?
We'll come out and tell you what you've got. No charge for the estimate.