VOL-tij sag
Noun
A decrease in power supply voltage.
Example usage: We need to check for voltage sag before connecting the new wiring.
Most used in: Electrical and construction trades.
Most used by: Electricians, engineers, and contractors.
Popularity: 8/10
Comedy Value: 2/10
Also see: Voltage Dip, Voltage Reduction, Voltage Fluctuation, Voltage Swell,
What Is Voltage Sag in Electrical Construction?
Voltage sag is an electrical term used by electricians and engineers in construction to describe a decrease in the voltage of an electrical system. This decrease in voltage is usually short-lived, lasting for a few milliseconds to a few seconds. Voltage sags are caused by sudden changes in the electrical load on a system, such as when a large motor is started up.
Voltage sag can have an impact on the operation of sensitive equipment, such as computers, in an electrical system. The amount of voltage sag is measured in percentage, and is typically small, ranging from 1 to 10 percent. Smaller voltage sags can often go undetected, but larger voltage sags can cause disruption to the operation of sensitive equipment.
Statistics show that voltage sags are becoming more common, with the number of sags increasing in recent years. In the US, the average number of voltage sags per customer per year increased from 1.2 in 2012 to 1.8 in 2018. This is due to the increasing amount of electricity being used in homes and businesses.
Voltage sags can be avoided or minimized by installing voltage regulators and uninterruptible power supplies in an electrical system. These devices help regulate the flow of electricity and reduce the likelihood of voltage sags occurring. It is also important to ensure that electrical wiring is in good condition, as this can help reduce the risk of voltage sags.
The History of Voltage Sag: An Electrician's Tale
Voltage sag is a term used to describe a decrease in the voltage of an electrical system. The term was first coined in the early 1900s, when electrical engineers and electricians in the United States began to use it to describe the phenomenon of a sudden drop in voltage.
The term was popularised in the 1940s when the US National Electric Code (NEC) adopted it as a standard term for describing the phenomenon. Since then, the term has been widely used by electricians and engineers around the world to describe any decrease in the voltage of an electrical system.
Voltage sags are a common occurrence in electrical systems, and can cause a range of problems, including equipment damage, power outages, and even fires. As such, it is important for electricians to be aware of the phenomenon and take measures to prevent and mitigate it.
