SPD with video

What does SPD stand for

• Surge arrest device

• Suppression protection device

• Surge protection Device

• Surreal protective dilemma

What does AC stand for

• Air Circuits

• Air Conditioning

• Alternating Cycle

• Alternating Current

Which of the below my SPD protect our installations against.

• Indirect lightning strikes

• overload

• open circuit

• short circuit

What may cause a surge

• Large loads turning on and off

• Rapidly operating the circuit breakers

• Flicking the lights on and off

• A windy Day

What is one of the main components for an SPD

• Magnets

• Magnesium oxide

• Metal oxide varistor

• Magic

Some SPD may contain

• Gold leaf

• A fuse

• Gas discharge tube

• Good protons

BS7671 States one of the reasons to use SPDs

is to avoid

• To give us overload protection

• Keep things looking nice

• Significant financial or data loss

• To avoid noisy circuit breakers

Do SPDs trip once thay have operated

• No

• Yes

• it depends how big the surge is

• Hmm I don't know

How do we know if the surge protection has operated

• It smells of burning

• it goes bang

• It makes an audible noise

• The coloured panel will change colour