Question 1
During testing, a ground fault is simulated at the far end of a long feeder, but the protective device does not trip quickly. What is the most likely cause?
Question 2
Why must metal electrical boxes be bonded to the equipment bonding conductor?
Question 3
A receptacle tester shows an open ground on a receptacle mounted in a metal box with metal raceway. What is the most likely cause?
Question 4
On an engineered drawing, a note indicates that a feeder neutral is to be 'isolated except at service'. What does this instruction mean in practice?
Question 5
What is the main purpose of the equipment bonding conductor in an electrical installation?
Question 6
At the main service disconnect of a dwelling, how is the connection between the grounded service conductor and the bonding system typically made?
Question 7
When using a portable ladder to access a work platform, what is the recommended setup angle relative to the ground?
Question 8
When mounting a standard duplex receptacle in a device box, how should the grounding terminal be oriented in many Canadian installations?
Question 9
A 600 V to 120/208 V three-phase, four-wire transformer is installed in a commercial building. Why must the secondary neutral be grounded and bonded to the building's bonding system?
Question 10
What is the primary purpose of bonding non-current-carrying metal parts in an electrical installation?
Question 11
Which of the following is the primary purpose of a 'bonding' conductor in a Canadian electrical installation, according to CEC Section 10 concepts?
Question 12
What is the primary purpose of the 'bonding' system in an electrical installation?
Question 13
According to CEC Section 10 concepts, what is the primary purpose of bonding non-current-carrying metal parts together?
Question 14
According to the concepts in CEC Section 10, what is the primary purpose of 'bonding' non-current-carrying metal parts of an electrical system?
Question 15
According to the principles of CEC Section 10, what is the primary function of 'bonding' non-current-carrying metal parts together?
Question 16
During troubleshooting, a journeyperson measures 120 V from line to neutral and 80 V from line to equipment ground on a receptacle. What is the most likely issue?
Question 17
During testing, you measure a very high resistance between a phase conductor and equipment bonding conductor on a de-energized circuit using a megohmmeter. What does this indicate?
Question 18
An equipment bonding jumper is used to:
Question 19
What is the primary function of the Equipment Grounding Conductor (EGC)?
Question 20
What is the primary reason for bonding all metal non-current-carrying parts of an electrical system?