Ch 8 - Service Entrance Install/Equip
porcelain
A __________ standoff fitting is used to attach the service drop cable to the side of a house.
sill plate
A _________________________ is installed over the service cable at the point where it goes through the hole in the side of the house to prevent water from entering the house.
2
A service mast is made of rigid metal conduit or intermediate metal conduit and should be at least a __________ inches trade size conduit to provide adequate strength.
insulated bushing
A(n) __________ is a plastic or fiber fitting designed to screw onto the ends of a conduit or cable connector to provide protection to the conductors.
3
Conduit clamps used to support a service raceway installed on the side of a house must be installed no more than ____________________ feet from the weatherhead and meter socket.
Metallic
Electrical __________ Tubing is permitted to be used as a service raceway.
supplemental
If a metal water pipe is used as a grounding electrode, a ___________ grounding electrode must be used.
antioxidant
If aluminum service conductors are being used, make sure a(n) ____________________ is used at each termination point to prevent oxidation of the conductors.
isolated
In a sub-panel, the grounding bar and the neutral bar are electrically ___________ together so that the white grounded conductors and the bare or green grounding conductors can all terminate at the same location.
line or supply
Incoming electrical power is connected to the __________________ side of electrical equipment.
load
Outgoing electrical power is connected to the ____________________ side of electrical equipment.
110
The NEC provides the specifications for working space around electrical equipment in Article __________.
300.5
The NEC requirements for minimum burial depths are found in Table __________.
voltage drop
The amount of voltage that is needed to push the house electrical load current through the wires from the utility transformer, to the service panel, and back to the transformer is called __________.
service drop conductors
The conductors that run overhead from the utility transformer to the residence are called the _______.
5
The grounding electrode conductor must be attached to a metal water pipe grounding electrode no more than __________ feet from the point where the metal water pipe enters the house.
4 to 5
The meter socket is usually located so the center of the kWh meter is from _______________________ feet above final grade.
service lateral
The service conductors that run underground from the utility transformer to the meter socket are known as the __________.
triplex cable
The service drop for a residential overhead service entrance is usually installed with __________.
3
The working space in front of residential service equipment as stated in NEC Section 110.26 is __________ feet.
URD
Three or four USE conductors can be combined together in a single cable assembly and used in a residential underground service installation. This type of cable is referred to as __________ cable.
12
When Type NM or Type SER cable is used as a feeder cable supplying power to a sub-panel, the cables must be supported within __________ inches of both the main panel and the sub-panel.
sub-panel feeder
When connecting ___________ conductors in the main panel, both the grounded neutral conductor and the grounding conductor are connected to the main panel grounded neutral bar.
3
When installing an overhead service, __________ feet of conductor should stick out of the weatherhead for the formation of a drip loop.
12
When installing an underground service, a warning tape must be installed at least __________ inches above the buried service entrance conductors.
12
When using service entrance cable for the run between the weatherhead and the meter socket, the cable must be supported within __________ inches of both the weatherhead and the meter socket.
8
Where underground service cables exit the trench and run up a utility pole to the transformer, the conductors must be protected from physical damage to a height of __________ feet above final grade.
mast kit
A(n) __________ usually includes a weatherhead, a porcelain standoff fitting, a rubber weather collar, and a piece of roof flashing.
backboard
A(n) ____________________ is a surface on which a service panel or sub-panel is mounted. It is usually made of plywood and is often painted a flat black color.
LB
A(n) ____________________ is a type of conduit body that allows for a 90 degree change of direction in a raceway path. It is often used to allow the service raceway to run from the meter socket, through the side of the house, and continue to the service equipment enclosure.
intersystem bonding termination
A/an _________________________________ is a device used to provide a connection point for cable television, satellite TV, telephone, and any other system that requires being bonded to the house electrical power system grounding electrode.
3
According to the NEC, the working space in front of a service entrance panel in a residential wiring application must be at least 6.5' high, 30" wide, and extend at least __________ feet in front of the panel.
electrical metallic tubing
Where underground service conductors exit the trench to run up to a meter socket on the side of a house, __________ is not permitted to be used to provide the conductors with protection from physical damage.
service entrance cable
__________ is a common wiring method used to bring the electrical power from the point of attachment to the meter socket and then on to the main service equipment.
backfeeding
____________________ is a wiring technique that allows electrical power from an existing electrical panel to be fed to a new panel by a short length of cable.