Podcast
Questions and Answers
List three reasons to properly ground a system.(Rule: 10-002)
List three reasons to properly ground a system.(Rule: 10-002)
- protect wire and conductors, safe equipment and risk free.
- to pass the inspection, follow electricals rule, home owner's safety
- ground system must apply , foreman asking, electricals shocks .
- Improved human safely through lowered voltage-to-ground, improved overcurrent operation, reduced risk of fire. (correct)
Which of the following electrical points should be grounded on a DC 3 - wire system?
Which of the following electrical points should be grounded on a DC 3 - wire system?
- positive voltage terminal
- negative voltage terminal
- neutral voltage terminal (correct)
- inserting an impedance grounding device
If the services was grounded at point A, what magnitude and polarity of shock could be felt between point A and ground?
If the services was grounded at point A, what magnitude and polarity of shock could be felt between point A and ground?
- 120 volts
- 0 volts (correct)
- 240 volts
- 220
If the service was grounded at point B, what magnitude and polarity of shock could be felt between point B and ground?
If the service was grounded at point B, what magnitude and polarity of shock could be felt between point B and ground?
If the service was grounded at point C, what magnitude polarity of shock could be felt between point C and ground?
If the service was grounded at point C, what magnitude polarity of shock could be felt between point C and ground?
Which of the following electrical points should be grounded on an AC-3 wire system( Rule: 10-208)
Which of the following electrical points should be grounded on an AC-3 wire system( Rule: 10-208)
What is the maximum voltage to ground allowed for a single phase residential application (Rule: 10-206, 10-208)
What is the maximum voltage to ground allowed for a single phase residential application (Rule: 10-206, 10-208)
A electrical system may be grounded at how many electrical points? (Rule: 10-204) & Rule: 10-208(d)
A electrical system may be grounded at how many electrical points? (Rule: 10-204) & Rule: 10-208(d)
May a single electrical point of a system be grounded at more than one physical location? (Rule: 10-212)
May a single electrical point of a system be grounded at more than one physical location? (Rule: 10-212)
A system ground goes from the grounding electrode to the ....... inside the main service equipment
A system ground goes from the grounding electrode to the ....... inside the main service equipment
A equipment ground goes from the grounding electrode to the ............... inside the main service equipment.
A equipment ground goes from the grounding electrode to the ............... inside the main service equipment.
What is the minimum number of grounded points that are necessary on a circuit before the overcurrent devices will operate? Rule: 10-212)
What is the minimum number of grounded points that are necessary on a circuit before the overcurrent devices will operate? Rule: 10-212)
A well casing is a form of which of the following: Rule: 10-102(4)
A well casing is a form of which of the following: Rule: 10-102(4)
Ground rods are a form of which of the following: (Rule: 10-102)
Ground rods are a form of which of the following: (Rule: 10-102)
Where there are multiple grounding electrodes at a building, they shall be: ( Rule: 10-104)
Where there are multiple grounding electrodes at a building, they shall be: ( Rule: 10-104)
Which of the following are allowed to be used to bond equipment downstream of the service
Which of the following are allowed to be used to bond equipment downstream of the service
a bonding conductor is run in the same raceway with other conductors and what is its maximum length? (Rule: 10-612(3)
a bonding conductor is run in the same raceway with other conductors and what is its maximum length? (Rule: 10-612(3)
How deep must the ground plate be buried ? (Rule: 10-102(2)(c)(i)
How deep must the ground plate be buried ? (Rule: 10-102(2)(c)(i)
How many and how far apart must the ground rods? (Rule: 10-102(2)(a)(i)
How many and how far apart must the ground rods? (Rule: 10-102(2)(a)(i)
What materials and gauge must the grounding conductors be? (Rule: 10-114(1)(a)(b)
What materials and gauge must the grounding conductors be? (Rule: 10-114(1)(a)(b)
If the plate electrode were to be encased in a concrete footing, what minimum depth below grade would the plate electrode need to be? Rule: 10-102(2)(c)(ii)
If the plate electrode were to be encased in a concrete footing, what minimum depth below grade would the plate electrode need to be? Rule: 10-102(2)(c)(ii)
