Residential and Commercial Electrical Services
(774)219-9832
EASTERN MASSACHUSETTS & SOUTHERN NEW HAMPSHIRE
Essential Home Electrical Safety Tips
Maintaining the safety of your home from electrical hazards and potential fires predominantly involves ensuring that the wiring and circuits are sufficiently updated and utilized correctly. While old wiring is not inherently dangerous, proper inspection, maintenance, and usage are crucial.
Examples of Outdated Home Wiring
Is Knob and Tube Wiring in Older Homes Safe? Widely used in the early days of electrification and continuing until the early 1950s, knob-and-tube (K&T) wiring comprises copper wires running through ceramic knobs and tubes. This system lacks a safety grounding wire, which is essential to meet modern safety standards. Although the copper wires themselves do not degrade significantly over time, the insulation, often made of rubber and cloth braid in older installations, can deteriorate after many decades.
This wiring type also depends on adequate air circulation to stay cool. Under the National Electrical Code (NEC Article 394), K&T cannot be buried in thermal insulation. However, even when homeowners add blown-in or batt insulation to attics/walls without burying the wires, heat gets trapped around the them, dramatically increasing fire risks.
Why Is Aluminum Wiring a Fire Risk? Popular in the 1960s and 1970s as a cheaper alternative to copper, aluminum wiring is found in some Massachusetts homes. Its tendency to expand and contract more than copper can lead to loose connections, increased resistance, and higher risks of overheating and fire.
Grounding for safety started in the early 1950s and was first used with appliances. It gradually extended to exterior outlets, garages, and basements where water posed a hazard. The final step was adding grounding to standard wall outlets in home circuits.
If you have an outdated system, routine electrical inspections are the best way to ensure your home is safe. In many cases, you may be required to update parts of a system or the entire system to provide economical insurance for the home or to prepare for sale.
Quick Summary: Home Electrical Safety
The Danger: Electrical failures trigger nearly 50,000 U.S. home fires annually—most stemming from outdated wiring, overloaded circuits, or deteriorated insulation.
The Fix: Modernizing panel service, replacing ungrounded receptacles, and replacing frayed cords drastically cut fire risks.
Next Step: If your home is over 40 years old or showing warning signs, a licensed electrician should inspect your system before selling or adding to your home.
Tips for Keeping Your Home Electrical System Safe
Beyond upgrading outdated systems, there are some common practices to follow for all homes, new and old, and all wiring systems. The importance of staying on top of these is to prevent fires and lower the risk of fires. According to the National Fire Protection Association, nearly 50,000 home fires in the U.S. are caused by electrical failures or malfunctions each year. These fires result in over 400 deaths, 1,500 injuries, and at least $1.4 billion in property damage.
-
Avoid overloading outlets: Too many devices plugged in can cause overheating and fire hazards. Multiple outlet extension cords and use of extension cords permanently can add to your risk.
-
Inspect cords regularly: Frayed or damaged cords should be replaced immediately. Avoid unplugging devices by pulling on the cord, instead grasp the plug itself.
-
Keep cords away from water: Never run electrical cords near sinks, bathtubs, or damp areas.
-
Unplug when not in use: Especially for appliances that heat up, like toasters or curling irons.
-
Use surge protectors: Surge protectors play a crucial role in safeguarding your electronics from power surges, which are sudden spikes in voltage. These surges can happen due to lightning strikes, power outages, or even large appliances cycling on and off. Without protection, these voltage spikes can damage or destroy your devices and cause fire hazards. Surge protectors work by diverting excess electricity safely to the ground, preventing it from reaching and harming your valuable electronics. They are especially important for sensitive equipment like computers, TVs, and gaming consoles. Some surge protectors also come with built-in protection against electrical fires. Some devices are more sensitive to power surges than others, especially electronics with delicate internal components.
-
Be alert and inspect regularly: There are a few common signs that you may have a current problem or could have a problem in the near future can often be easily detected.
-
Flickering, blinking, or dimming lights
-
Frequently tripped circuit breakers or blown fuses
-
Warm or discolored wall plates
-
Cracking, sizzling, or buzzing from receptacles
-
Burning odor coming from receptacles or wall switches
-
Mild shock or tingle from appliances, receptacles, or switches
-