DIY Electrical Mistakes We See Too Often (and How to Avoid Them)

Trying to save a little money or fix something fast can be tempting—but when it comes to electrical work, even small DIY mistakes can lead to big risks.

At Navi Electric, we’ve seen it all: melted wires, overloaded panels, and “creative” wiring jobs that could have ended very differently.

In this post, we’ll share the most common DIY electrical mistakes we come across—and how to avoid putting your home (and your family) in danger.

🔌 Mistake #1: Overloading Circuits

Plugging too many devices into one outlet or circuit can overload the system, cause overheating, and potentially lead to an electrical fire.

💡 How to Avoid It:

• Don’t piggyback multiple power strips.

• Use dedicated circuits for large appliances (microwave, fridge, AC).

• If your breakers trip often, it’s time to call a pro to evaluate your panel or wiring.

Melted wire found by Navi Electric due to overloaded circuit

🧯 Mistake #2: Using the Wrong Wire Type or Size

Different appliances and systems require different wire gauges. Using the wrong one can result in voltage drops, overheating, or fire hazards.

💡 How to Avoid It:

• Always match the wire size to the amperage of the circuit.

• Use outdoor-rated wires in wet areas (like bathrooms or outside).

• Not sure what gauge to use? Don’t guess—get help.

⚠️ Mistake #3: No Junction Boxes or Improper Boxes

We often find wires connected in walls or ceilings without a junction box. This is a code violation and a serious fire hazard.

💡 How to Avoid It:

• All splices must be inside a properly sized, accessible junction box.

• Boxes must be covered with a faceplate to prevent accidental contact.

  
  
  
  

🔥 Mistake #4: Incorrect GFCI Placement

Many homeowners install GFCI outlets in the wrong spot, or assume one GFCI will protect all nearby outlets (when it doesn’t).

💡 How to Avoid It:

• Install GFCIs in all wet areas: bathrooms, kitchens, laundry, garage, and outdoors.

• A licensed electrician can test your setup to make sure everything is protected.

Regular Outlet Vs GFCI Outlet

🪛 Mistake #5: Loose or Backstabbed Connections

We see this often in DIY jobs: wires loosely wrapped around terminals or pushed into the "quick connect" holes in outlets—leading to intermittent power or overheating.

💡 How to Avoid It:

• Always use the side terminal screws and tighten them securely.

• Check all connections during installation—not just that the device turns on.

  
  

🚫 Mistake #6: Skipping Permits and Inspections

It may seem like an unnecessary step, but permits and inspections ensure that the work meets local code and is safe for your home.

💡 How to Avoid It:

• Always check with your local building department.

• Hire a licensed electrician who handles the permitting for you.

  
  

🧠 Mistake #7: Trusting YouTube Over Experience

Not all online advice is accurate—or legal. Following the wrong tutorial could mean code violations or real danger.

💡 How to Avoid It:

• Use licensed resources, or call a professional for even minor questions.

• If it seems too complicated or risky, it probably is.

  
  

⚡ The Bottom Line: Electricity Isn’t the Place to Cut Corners

Even well-meaning homeowners can make dangerous mistakes with DIY electrical work. The good news? Most of these mistakes are avoidable—and we’re here to help you stay safe.

🛠️ Need a Second Look at a DIY Job?

Let us inspect your existing wiring or correct any unsafe installations.

✅ Fast, friendly, and code-compliant service

✅ No judgment—just safe solutions

✅ Licensed and insured electricians

📞 Call Navi Electric at (425) 737.1905

📧 Or request a service visit Navielectricllc.com