A10 - Electrical Incidents

Question 1

A10 - What is the minimum safe distance for working with overhead power lines, substation and working near other equipment belonging to electrical supply industry?

Answer 1

5m

Question 2

A10 - What is the minimum safe distance for working with dense smoke or flames approaching conductor?

Answer 2

10m

Question 3

A10 - What is the minimum safe distance for working with ladders, aerial appliance or tall equipment?

Answer 3

10m operationally
20m in training
10m corridor

Question 4

A10 - What is the minimum safe distance for working using hand held jets?

Answer 4

20m corridor

Question 5

A10 - What is the minimum safe distance for working with ground monitors

Answer 5

30m corridor

Question 6

A10 - What is the classifications for low voltage and where would it be found?

Answer 6

Greater than 50 Volts but less than 1000 volts AC or 1500 Volts DC.

• Light Industrial Premises
• Commercial Premises
• Farms
• Domestic Premises

Question 7

A10 - What is the classifications for high voltage and where would it be found?

Answer 7

Anything greater than 1000 Volts AC or 1500 Volts DC.

• Heavy Industrial Premises
• Overhead Line Equipment
• Transformers
• Sub-stations
• Underground Cable Installations

Question 8

A10 - When MUST electrical gloves be worn?

Answer 8

For removing persons in contact from low voltage cables

For moving low voltage cables which prove a danger to operations

Question 9

A10 - What distance must crews stay away from Overhead Line Equipment for electrified railways?

Answer 9

1m

Question 10

A10 - Which component of production and distribution has outputs as high as 2675 megawatts?

Answer 10

Power Stations

Question 11

A10 - Which component of production and distribution reduces voltage from 400,000v to 230v in sequential steps?

Answer 11

Sub stations

Question 12

A10 - Overhead line towers [Pylons] operate at voltages ranging from?

Answer 12

33000v- 400,000v

Question 13

A10 - True or False? Electric shock can cause; Death, paralysis, Fibrillation of the heart, Cardiac arrest & Burns

Answer 13

True

Question 14

A10 - What is the pre-determined attendance for an incident involving water endangering electrics?

Answer 14

1 pump

Question 15

A10 - What is the PDA for incidents involving a sub station?

Answer 15

2 nearest pumps

Question 16

A10 - True or false; electrical rubber gloves are suitable to be used where system voltages exceed 3300v?

Answer 16

False

Question 17

A10 - When making a rescue of persons in contact with, or in close proximity to, live equipment what procedures must be put in place?

Answer 17

Make safe to touch

Switch off power supply

Question 18

A10 - True or false; When a transformer is involved in a fire it is vital to lay a blanket of foam over the affected area as soon as possible to reduce the risk of explosion.

Answer 18

True

Question 19

A10 - What is the safe distance to be maintained when Solar Photovoltaic Installation (Solar Panels) components are involved in fire?

Answer 19

1m

Question 20

A10 - Solar panel installations can generate up to?

Answer 20

200v – 1000v