Before revision: A surge protector (or spike suppressor, surge suppressor, surge diverter, surge protection device (SPD) or transient voltage surge suppressor (TVSS) is an appliance or device intended to protect electrical devices in alternating current (AC) circuits from voltage spikes , which can arise from a variety of causes including lightning strikes in the vicinity and have a very short duration measured in microseconds .
After revision: A surge protector (or spike suppressor, surge suppressor, surge diverter, surge protection device (SPD) or transient voltage surge suppressor (TVSS) is an appliance or device intended to protect electrical devices in alternating current (AC) circuits from voltage spikes , which can arise from a variety of causes including lightning strikes in the vicinity with very short duration measured in microseconds .