overvoltage
/ˈoʊvərˌvoʊltɪdʒ/
noun
- A voltage that is higher than the normal or safe level for an electrical device or system.
- The technician installed a protector to prevent overvoltage in the circuit.
- A power surge caused an overvoltage that damaged the computer.
- Overvoltage can shorten the lifespan of household electronics.