Hazards and Safety Precautions for HV Installations Flashcards
1
Q
What is the purpose of key interlocking?
A
A safety measure to prevent an accident and protect equipment
2
Q
What are the five general steps to be taken in a safe switching sequence?
A
Disconnect, lock out, test, ground and screen off nearby live parts where necessary
3
Q
The minimum safe distance to be maintained when work is to be done in the vicinity of a 25kV line is _____
A
3m (10 ft)
4
Q
Which is more likely to be higher:
a. step voltage
b. touch voltage
A
b. Touch voltage
5
Q
Is a ground mat made of insulating or conducting material?
A
Conducting material
