DIY Electrical Mistakes We See All the Time in Colorado Homes (and How to Avoid Them)

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If you live in Westminster or Brighton, you’ve probably noticed that many homes here have a lot of history and character. Westminster’s 1970s ranches and Brighton’s older farm-style properties often come with original wiring that’s been “updated” over the years by a mix of homeowners and handymen.

That patchwork approach has left plenty of electrical quirks hiding behind walls and in garages. Some are harmless, but others can start a fire, fry an appliance, or shock you when you least expect it.

At Professional Power, our Westminster electricians and Brighton electricians have spent years helping homeowners across the area bring their electrical systems up to code and up to speed. Here are the most common DIY mistakes we see in Colorado homes and what to do instead.

1. Back-stabbed outlets and loose connections

Older homes in Westminster often have outlets that were wired using the “back-stab” method, where the wire is pushed into a small hole in the back of the outlet instead of wrapped around a screw. It’s quick for installers but not reliable long-term.

Over time, those connections loosen, leading to flickering lights, intermittent power, or even arcing behind the wall. If your outlets feel warm or unreliable, schedule an electrical inspection. A licensed electrician can rewire those connections properly, restoring a safe and steady flow of power.

2. Shared neutral wires between circuits

Homes that have been remodeled or expanded, especially older ranches in Westminster, sometimes end up with circuits that share a neutral wire. This can cause frequent breaker trips and uneven power.

This usually happens when previous owners added wiring for new rooms or outdoor spaces without understanding load balance. The best fix is to have a professional inspect your electrical panel and separate the wiring safely. That simple upgrade can eliminate nuisance trips and prevent dangerous overheating.

3. Extension cords doing more than they should

In Brighton, garages and sheds often double as workshops or small businesses. One of the biggest hazards we see is long, thin extension cords powering heavy-duty tools or heaters. These cords aren’t built to handle that much current for long periods and can overheat quickly.

If you’re running power tools or hobby equipment in your Brighton garage, install dedicated outlets and switches or add a circuit designed for that load. It’s safer, cleaner, and much more efficient than stringing together multiple cords.

4. Improper wiring to detached sheds or outbuildings

Running power to a detached garage, barn, or shed is common in both Westminster and Brighton, where larger lots invite outdoor projects. But it’s also one of the most frequent DIY mistakes we find.

Many homeowners use indoor-rated wire or shallow conduit, both of which deteriorate quickly when exposed to moisture or soil. Proper outdoor wiring must meet code for burial depth, wire type, and grounding. Before you trench or run a new line, talk to an expert about electrical installation for detached structures. You’ll avoid corrosion, energy loss, and potential safety issues.

5. Open splices hiding in attics or basements

Attics in Westminster homes and basements in Brighton farmhouses are often full of “temporary fixes” that have become permanent. One of the most common is open splices, where wires are twisted together and taped, then left floating behind insulation or tucked into joists.

These unboxed connections are both unsafe and illegal. They can easily spark or short when insulation settles. If you notice flickering lights, a faint burning smell, or power dips when larger appliances run, schedule an electrical safety inspection or rewiring service to locate and secure every connection properly.

6. Hot tubs wired without proper protection

In Brighton backyards and Westminster patios, hot tubs are increasingly popular, but they’re also one of the biggest electrical offenders. Many are wired with standard indoor Romex or without GFCI protection, which can be dangerous around water.

A licensed electrician can install a dedicated 240-volt circuit and GFCI breaker in your electrical panel to ensure your spa setup is code-compliant, safe, and built to last through every season.

7. Old electrical panels struggling with new technology

Homes across both cities are drawing more power than ever thanks to smart devices, high-efficiency appliances, and the growing popularity of EV chargers. Unfortunately, many Brighton and Westminster houses still rely on outdated 60- or 100-amp panels that were never meant for today’s loads.

If you experience frequent tripped breakers or dimming lights when multiple devices run, your panel may need an upgrade. A modern SPAN smart panel or new breaker system can safely support EV chargers, backup generators, and the rest of your home’s energy needs.

8. No surge protection and forgotten detectors

Colorado’s weather is unpredictable. Both Westminster and Brighton see their share of lightning storms, and without surge protection, a single strike can take out multiple appliances in one hit. Installing whole-home surge protection at your main panel protects your electronics from voltage spikes year-round.

This is also a good time to check your smoke and CO₂ detectors. Many homeowners don’t realize these devices have a 7 to 10 year lifespan. Replacing or upgrading them as part of a regular inspection can save lives.

9. Skipping permits for “small” electrical projects

Adding recessed lighting or an extra outlet for your Brighton home office might seem simple enough, but unpermitted wiring is one of the top issues uncovered during home sales in both Westminster and Brighton.

Even small jobs that involve running new wiring typically require a permit and inspection. Working with a professional ensures the project is safe, legal, and insurable, and it saves you from costly rework later.

Simple Habits That Keep Your Colorado Home’s Electrical System Healthy

A few small habits can go a long way toward protecting your home in Westminster or Brighton:

  • Schedule professional inspections every few years, especially for older wiring.
  • Avoid DIY fixes unless you’re completely confident in your electrical knowledge.
  • Upgrade outdated panels and outlets before they cause bigger issues.
  • Add surge protection to guard against Colorado’s volatile weather.
  • Test and replace smoke detectors regularly.

If you’re looking for dependable electrical services in Westminster or Brighton, Professional Power offers precise workmanship, transparent pricing, and modern solutions tailored to local homes and codes.

Ready to Feel Confident About Your Home’s Power?

Electrical work isn’t the place to experiment. Even a small wiring mistake can cause lasting damage or serious safety risks.

Whether you live in a century-old Brighton farmhouse or a mid-century Westminster ranch, our team understands the quirks of local homes and how to make them safer, more efficient, and ready for the future.

If you’re unsure about your wiring, outlets, or electrical panel, schedule a full electrical safety inspection or repair service with Professional Power today.

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