Question 1
What is the primary purpose of bonding metal enclosures and raceways in an electrical installation?
Question 2
What is the main purpose of bonding in an electrical installation?
Question 3
A new residential service requires a main bonding jumper. Where is this typically installed?
Question 4
What is the main function of a neutral conductor in a 120/240 V single-phase residential system?
Question 5
What is the main safety advantage of a three-prong (grounding-type) attachment plug compared with a two-prong (non-grounding-type) plug?
Question 6
An insulation resistance test on a 600 V motor using a megohmmeter shows a reading of 200 MΩ to ground. What does this most likely indicate?
Question 7
During testing of a de-energized feeder, your insulation resistance tester shows a very low resistance reading between one phase conductor and ground. What does this indicate?
Question 8
Why must metal raceways and enclosures be bonded to the equipment bonding conductor?
Question 9
According to CEC Section 10, what is the primary function of the system bonding jumper?
Question 10
What is the primary purpose of a 'bonding bushing' on a metal conduit entering a service box with concentric knockouts?
Question 11
In a commercial service, where is the neutral-to-ground bond made?
Question 12
What is the minimum size of copper bonding conductor required for a service supplied by #3/0 AWG copper conductors?
Question 13
What is the primary function of the system bonding jumper?
Question 14
What is the primary purpose of a bonding bushing on a service conduit with concentric knockouts?
Question 15
Where is the neutral-to-ground bond made in a standard service?
Question 16
Which of the following describes the primary function of a 'system bonding jumper' in a Canadian service installation?
Question 17
An electrician is installing a 120/240V, 3-wire residential service. Where is the 'system bonding jumper' typically located in this installation?
Question 18
What is the main reason for using a bond jumper around a flexible connection in a metal raceway system?
Question 19
What is the main purpose of the equipment bonding conductor in a circuit?
Question 20
What is the purpose of bonding metal raceways and enclosures in an electrical installation?
Question 21
What is the main purpose of a bonding jumper between metallic raceways and enclosures?
Question 22
What is the main purpose of the bonding conductor in an electrical installation?
Question 23
On a complex set of industrial drawings, the one-line diagram indicates a main-tie-main switchgear lineup with two utility sources and a bus tie breaker. What is the primary purpose of the bus tie breaker in this configuration?
Question 24
What is the main purpose of bonding metal raceways and enclosures?
Question 25
In a panelboard, what is the purpose of the main bonding jumper?
Question 26
Where metal conduit contains service entrance conductors, what type of bushing is required?
Question 27
How is the Equipment Bonding Jumper on the supply side of the service sized?
Question 28
Where is the main bonding screw (green screw) typically installed?
Question 29
Where must the Main Bonding Jumper be installed?
Question 30
A 200A service disconnect requires a main bonding jumper. Where is this usually installed?