What is Brownout?
A brownout refers to a drop in voltage within an electrical power supply system, typically short-term, that doesn’t completely cut off the power but causes lights to dim and can disrupt or damage sensitive electronics. Unlike a blackout, which is a total loss of power, brownouts allow electricity to continue flowing but at a reduced level, often leading to flickering lights or poor appliance performance.
In residential and commercial electrical systems, brownouts may be caused by grid overloads, aging infrastructure, or extreme weather. Electricians must identify and resolve the source to prevent recurring issues. During a brownout, equipment like HVAC systems or computers may operate inefficiently or shut down unexpectedly. Installing voltage regulators, surge protectors, or uninterruptible power supplies (UPS) helps protect valuable devices from brownout damage.