What is a Surge Suppressor?
A surge suppressor is a device that tries to limit the maximum voltage to a safe threshold. Some do this by routing excess voltage back to the grounding conductor (green or bare wire), others try to open the ungrounded conductor (typically the black or colored wire) or “trip”. Surge suppressors can be installed in shunt (parallel) or in series, depending on the model and manufacturer; they may also guarantee up to some amount that they will protect downstream devices.
