Deck 5: Grounding and Bonding

Question 1

Ungrounded electrical systems are required to have a(n)____________________ that indicates whether any of the ungrounded conductors accidentally makes contact with grounded metal of the system or to the earth.

Answer 1

ground-fault detector
ground fault detector

Question 2

The definition of "dry-niche luminaire" was revised to indicate they are permitted to be installed in the ____________________ as well as the wall of the pool.

Answer 2

floor

Question 3

Current flow through human beings of greater than _______________ amperes is considered serious.

Answer 3

15
fifteen

Question 4

When a ground rod is installed, it is required to have a resistance to earth of not more than ___________________ ohms.

Question 5

What is an open delta system?

Question 6

The separately derived system equipment bonding jumper is now called the ___________________.

Question 7

An electrically continuous path is required to be established to allow enough current to flow during a fault to operate overcurrent devices such as circuit breakers and fuses.

Question 8

How is the adjusted equipment grounding conductor size calculated?

Question 9

The equipment served by an ungrounded electrical system should be grounded differently than from a grounded system.

Question 10

List three of the main factors involved in electrical shock to an animal or human.

Question 11

There is a new requirement that supply-side bonding jumpers must be protected by the same means as for ____________________.

Question 12

What is the basic function of a surge-protective device?

Question 13

What are some of the repercussions of electrical shock, or current passing through the body?

Question 14

Grounding an electrical system to the earth has the same purpose as equipment grounding.

Question 15

____________________ skin has a high resistance to the flow of electricity.

Question 16

Grounding is always required.

Question 17

What is the equipment grounding wire size is based upon?

Question 18

The most common electrical system for dwellings is the ____________________-volt, 3-wire single-phase system.

Question 19

What is the purpose of grounding an electrical system to the earth?

Question 20

Equipment grounding wires are permitted to be solid or stranded, insulated, or bare.