Question

1. the type of hard hat that can withstand a voltage of 20,000vac for three minutes is a ______.

a. class a
b. class c
c. class e
d. class g

1. class 0 rubber gloves are used when working with voltages less than ______.

a. 500 volts
b. 1,000 volts
c. 5,000 volts
d. 7,500 volts

1. an important use of a hot stick is to ______.

a. replace busbars
b. test for voltage
c. replace fuses
d. test for continuity

1. which of these statements correctly describes a double - insulated power tool?

a. there is twice as much insulation on the power cord.
b. it can safely be used in place of a grounded tool.
c. it is made entirely of plastic or other nonconductive material.
d. the entire tool is covered in rubber.

Explanation:

Question 9

Class E hard hats are rated to withstand 20,000VAC for three minutes. Class A is for general use, Class C is for conductive environments (not voltage protection), and Class G is for lower voltage (2200VAC). So the correct class is Class E.

Class 0 rubber gloves are rated for use with voltages less than 1000 volts. This is a standard in electrical safety for glove classifications.

A hot stick (or live - line tool) is primarily used for tasks like replacing fuses in live electrical systems while keeping the worker at a safe distance from the voltage. It is not used to replace busbars (busbars are larger and not typically replaced with a hot stick), test for voltage (a voltage tester is used for that), or test for continuity (a multimeter or continuity tester is used for that).

Answer:

c. Class E

Question 10