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Understanding Power Surges and Blinks

Monday | September 11, 2023
All News

Understanding Power Surges and Blinks

Have you ever noticed your lights blink during a thunderstorm? Or perhaps you’ve noticed a blinking microwave clock when you arrive home. When this happens, you’ve likely experienced a brief disruption to your electric service, which could result from a power surge or blink. While the symptoms of surges and blinks can appear similar, what’s happening behind the scenes can be quite different.

What’s a power surge?

Power surges are brief overvoltage spikes or disturbances of a power waveform that can damage, degrade or destroy electronic equipment within your home or business. Most electronics are designed to handle small variations in voltage; however, power surges can reach amplitudes of tens of thousands of volts––this can be extremely damaging to your electronic equipment. 

Surges can be caused by internal sources, like HVAC systems with variable frequency drives, or external sources, like lightning and damage to power lines and transformers.

Cullman Electric Cooperative encourages all members to install surge protective devices (such as surge protector power strips) to safeguard your sensitive electronics. If you’re experiencing frequent surges in your home or business and you believe the cause is internal, contact a qualified electrician to inspect your electrical system.

What’s a power blink?

Power blinks are also brief service interruptions, but they’re typically caused by a fault (short circuit) on a power line or a protective device that’s working in reaction to the fault. Faults can occur through a variety of instances, like squirrels, birds or other small animals contacting an energized power line; tree branches touching a power line; or lightning and other similar events. In fact, when it comes to power disruptions caused by critters, squirrels reign supreme. On average, squirrels are responsible for more than 1,200 outages across the country every year

Any of the events noted above can cause your power to blink, but you may also experience a brief interruption when protective devices that act like circuit breakers are working to detect the fault. Believe it or not, these brief power blinks caused by protective devices are actually good because that means the equipment is working as it should to prevent a prolonged outage.

Regardless of the cause, Cullman Electric crews will be on their way to inspect the damage and make necessary repairs after a power outage. And you can help too! Any time you experience repeated disruptions to your electric service, please let us know by calling 256-737-3201 or visit www.cullmanec.com/report-outages.

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  • Sprout Fiber Internet
    • Check Sprout Availability
    • Current Subscribers
    • Sprout Residential
    • Sprout Business
    • Sprout FAQs and Contact Us
    • Sprout Fiber Voice
  • Account Services
    • Report Outages
    • Connect or Disconnect Services
    • Payment Options
    • smartPAY – Prepaid Electrical Service
    • Security Lighting
    • Right of Way Maintenance
    • Rates, Fees, and Regulations
    • Water, Sanitation, and Bill Explanation Guide
    • Construction Forms
    • Industrial and Commercial Members
  • Member Benefits
    • SmartVIEW - Energy Tracker
    • Energy and Money Savings Programs
    • Renewable Energy Options
    • Safety Resources
    • Alabama Living Magazine
    • Co-op Connections Discounts
    • H.U.G & Utility Bill Assistance Organizations
    • New Member Information
    • Electric Vehicles
  • Community Programs
    • Operation Round Up
    • College Scholarships
    • Youth Education Programs
    • Economic Development
  • Your Co-op
    • About Cullman EC
    • Board of Trustees
    • Careers and Employment
    • Annual Meeting
    • News and Events
    • Policies and Education
    • Media and Brand Guide
    • Office Hours and Locations
    • Contact Us and FAQs