What's inside a Type 2 Surge Protection Device? SPD

Gary and Joe dissect a Wylex Type 2 SPD (surge protection device) to see what's inside and how the failure mechanism works. Surge protection is more common in uk consumer units due changes in the latest uk wiring regulations BS7671

We look at the varistor MOV which is connected between the line conductor and the protective earth and the gas discharge tube (GDT) connected between the neutral and protective earth.

Also included is a description of how the two different components work and an overview of how to signal remotely that the device has failed or reached the end of it's operating life.

For more electrical content please checkout our efixx website
eFIXX website - https://www.efixx.co.uk/sign-up

#eFIXX
#BS7671