Hydro One Electrical Safety

Question 1

The difference in electrical potential between two points in a circuit and the force that causes electricity and is measured in _____. This can be compared to water pressure.

Answer 1

Current

Question 2

The flow of electrical charge. It can be compared to the flow of water in a pipe.

Answer 2

Current and is typically measured in Amperage.

Question 3

This is similar to the effect of friction on the flow of a water pipe.

Answer 3

Resistance

Question 4

Very high resistance materials are called _________.

Answer 4

Insulators

Question 5

Low resistance materials are called _________.

Answer 5

Conductors.

Question 6

This is the process of mechanically connecting isolated wires and equipment to the earth, with sufficient capacity to carry any fault current and to ensure the wires and equipment remain at the same potential (same voltage) as the earth.

Answer 6

Grounding

Question 7

The electricity flowing through the tire causes a chemical decomposition of tires an sets the stage for pyrolysis. This can result in sudden explosion of tires up to _____ hours after contact.

Answer 7

24 hours

This was on an exam

Question 8

A distance of ______ m is recommended from the down wire or conductive object it is in contact with.

Answer 8

10 metres