What Is an Electrical Surge?
An electrical surge is a brief rise in voltage above the normal level in an electrical system. Voltage is the force that pushes electric current through wiring. A surge can travel through a home's wiring and reach connected equipment, where excess voltage may damage sensitive parts.
Quick Facts About Electrical Surge
- Category
- Voltage disturbance
- Used for
- Describing excess voltage in an electrical system
- Common confusion
- Power outage
- Also called
- Power Surge, Voltage Surge
- Often discussed with
- Whole House Surge Protector Installation
Key Takeaways About Electrical Surge
- Lightning and switching electrical loads can create surges.
- A whole-house protector helps limit voltage reaching connected equipment.
- A surge isn't the same as a sustained power outage.
How Electrical Surge Works
An electrical surge can start outside a home or within its wiring. Lightning near power lines can create a surge that travels toward the home. Large electrical loads can also create surges as they switch on or off. Related service: Whole House Surge Protector Installation.
Related glossary terms: Surge Protective Device, Breaker Panel, Electrical Grounding.
Surge size describes how far the voltage rises above its normal level. The path through the wiring affects which equipment encounters the excess voltage. Sensitive parts inside electronics may fail when the voltage exceeds what they can handle.
A surge protective device responds when voltage rises above its operating level. It limits the voltage across connected wiring by giving excess current a path away from the equipment. A whole-house device at the electrical panel helps protect circuits throughout the home, though it can't prevent every type of damage.
From the Earth Electric team
When we install a whole-house surge protector, we check the electrical panel and the device's connection points. We also look at the grounding and bonding connections because the protector needs a suitable path for surge current. The panel layout helps us plan the installation.
Electrical Surge in Practice: A Real-World Example
A Miami homeowner wants protection for electronics connected throughout the house. A whole-house surge protector at the panel helps limit excess voltage reaching those circuits during a surge.
Related Services
Related Terms
Surge Protective Device
A surge protective device is an electrical device that limits sudden rises in voltage reaching connected equipment.
Breaker Panel
A breaker panel is an electrical enclosure that distributes power to circuits in a building.
Electrical Grounding
Electrical Grounding is a connection between an electrical system and the earth.
Bonding
Bonding is an electrical connection that joins metal parts so they stay at a similar electrical potential.
Earth Electric
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