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Overloading a Light Switch: Why It’s a Bigger Deal Than You Think

  • Writer: Leanne Bowman
    Leanne Bowman
  • Aug 19
  • 2 min read

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What does “overloaded” mean? When too many light fixtures are connected to a single switch or circuit, you're asking that circuit to carry more current than it was designed for. Think of it like plugging six space heaters into one power strip — the load may exceed the circuit’s capacity, especially if you're adding more lights during a remodel or home update.


⚠️ The risks of overloading include:

  • Frequent breaker trips: Your panel is doing its job by cutting power to prevent overheating — but it’s a red flag.

  • Flickering or dimming lights: This could signal voltage drop or overdrawn current.

  • Warm switches or buzzing sounds: A clear sign that the wiring is under stress.

  • Fire hazards: Overloaded circuits can lead to overheating behind walls where damage isn’t easily seen.


🏡 Why older wiring is more vulnerable

Homes built before the 1980s weren’t designed to support today’s lighting trends. Even if you’re using energy-efficient LED bulbs, the overall wattage still matters — and outdated wires and breakers might not be up to code or capable of safe performance. Old connections, aluminum wiring, or shared neutral setups can all contribute to overload issues.


💡 How to know it’s time to call an electrician:

  • You’ve added recessed lights or under-cabinet lighting and now experience breaker trips

  • Your light switches are hot to the touch or make a faint buzzing noise

  • You plan to upgrade to multi-zone lighting or smart dimmers

  • Your home hasn’t had an electrical inspection in over 10 years


🛠 What Bowman Electric can do:

  • Evaluate the current circuit load and wiring capacity

  • Add new, dedicated lighting circuits if needed

  • Replace outdated or unsafe wiring

  • Ensure everything is up to modern electrical code


Safe lighting = peace of mind

Lighting upgrades should enhance your space — not stress your system. Let’s make sure your switches and circuits can handle the glow without the risk.


📞 Call Bowman Electric today at 406-880-4777 for a safe, smart solution that keeps your lights bright and your wiring safe.

 
 
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