Internachi Florida State Exam prep Questions With
Complete Solutions.
The typical electrical service for homes in North America is a_____?
120\240 Volt
The 240 Volt circuit is used for?
Appliances
The return conductor (a.k.a. the neutral) is at ___ volts because it is grounded to
the electric panel
Zero
Most 120 Volt circuits are wired to deliver ___ or ___ Amps of current
15, 20
Most ___ Buildings are supplied with 120\240 Volt services. This means that the
cable assembly is made up of ___ ungrounded conductors each supplying 120 V
with one ground
Residential, two
The point of attachment of the service drop conductors to a building or structure
must have a clearance of at least ___ ft
10
Vertical clearance for overhead conductors they are over public streets
18 feet
Vertical clearance for overhead conductors that are over commercial parking
areas
18 feet
Vertical clearance for overhead conductors that are over swimming pools?
22 feet and 6 inches, 10 feet horizontal
Vertical clearance for overhead conductors that are over residential properties?
12 feet
Vertical clearance for overhead conductors that are from sides of doors?
3 feet from the bottom, sides and front
The inspector should recommend that any ____ Within 5 to 6 feet be cut back
Tree limbs
The clearance for open overhead service conductors from the front, bottom and
sides of windows that______Is 3 feet
Open
Every 5 to 6 feet, rigid service mast should be secured to ___
The structure points
The method for installing a UF cable is __
Above ground
A service entrance with ____ Connected conductors is a phase 3 supply
Four
The typical supply for square brand electric meter is ___ amps
100
Most modern 200 amp electrical meters are marked ___
200 CL
,The minimum conductor size for a ___ Amp service is a 4 AWG copper or 2 AWG
aluminum
100
_____ Is a direct connection to the earth to aid in removing damaging transient
over voltages due to lightning
Grounding
____ Need to be bonded to the ground
All panel enclosures
Conductors between the main service disconnect to the distribution panels are
called ____
Feeders
How can you bonded a remote distribution panel?
By connecting the enclosure to the grounding bus
100 Amps is the ____Service required for a new single-family home
Minimum
The electrical supply should be shut down with ___ movements of the hand
Six or fewer
A common cause of arc flashes when removing panel fronts is ____?
Incorrect fasteners
A split bus electrical panel uses a double pole breaker to ___ The120 V circuits
Isolate
Which of the following would NOT be a defect?
Wire splices
Electrical service panel should be in a clear space measuring _____?
30 inches wide by 78 inches high by 36 inches deep
Fused main disconnects are usually a maximum of ___ amps
100
Upgrading to ___ fuses stops over fusing
S
Electric panel buses colored red, blue, and black are indicative of a ___?
Three phase supply
GFCI breakers have ____ conductors
Two
What wiring would require a specialist?
Solid conductor aluminum branch wiring
Or horizontally mounted face up countertop receptacles allowed?
No
The first kind of residential wiring is called?
Knob and tube
"Romex " cable that is not actually of the brand romex is called?
Type NM cable
What circuit should bathroom outlets be on?
20 amp GFCI
What is the minimum circuit for stoves?
40 amp
How many amps is an electrical clothes dryer?
, 30 Amp
Recessed ceiling lights should be rated ____ if installed against insulation.
IC
In a typical residential air-conditioning system, the ____Absorbs the heat energy
from the air passing through it, and transfers heat from the passing air to the
refrigerant moving inside
Evaporator
The ___ Is located inside the outdoor condenser unit and receives the low
pressure refrigerant vapor through the suction line
Compressor
The maximum discharge temperature for ducts of a warm air heating system is
____ F
250
A ___ is a device used to alter the volume of air passing through a confined cross
section by changing the size of the cross section area
Damper
T/F: You are required to inspect the insulation in unfinished spaces, including the
attic
True
T/F: you are required to inform your client about the absence or lack of adequate
insulation in areas of the house
True
Water vapor can move in three ways ___ transportation, diffusion through
materials, ___ diffusion
Air, thermal
___ Movement accounts for more than 98% of all water vapor movement and
building cavities
Air
___ diffusion is how moisture in a vapor state moves through material because of
a difference in pressure or difference in temperature
Vapor
___ Diffusion is water vapor moving through a material from a high pressure to a
low pressure or from a warm side of the wall to a cool side
Vapor
___Refers to the amount of moisture contained in a quantity of air compared to
the maximum amount of moisture in the air that could hold at the same
temperature
Relative humidity (RH)
4 general things you can do to prevent moisture intrusion is
1. Prevent water intrusion
2. ______
3. ______ air leaks
4. Provide an escape for moisture
Ventilate, stop
___Typically a thin metal strip found around the door
Flashing
Complete Solutions.
The typical electrical service for homes in North America is a_____?
120\240 Volt
The 240 Volt circuit is used for?
Appliances
The return conductor (a.k.a. the neutral) is at ___ volts because it is grounded to
the electric panel
Zero
Most 120 Volt circuits are wired to deliver ___ or ___ Amps of current
15, 20
Most ___ Buildings are supplied with 120\240 Volt services. This means that the
cable assembly is made up of ___ ungrounded conductors each supplying 120 V
with one ground
Residential, two
The point of attachment of the service drop conductors to a building or structure
must have a clearance of at least ___ ft
10
Vertical clearance for overhead conductors they are over public streets
18 feet
Vertical clearance for overhead conductors that are over commercial parking
areas
18 feet
Vertical clearance for overhead conductors that are over swimming pools?
22 feet and 6 inches, 10 feet horizontal
Vertical clearance for overhead conductors that are over residential properties?
12 feet
Vertical clearance for overhead conductors that are from sides of doors?
3 feet from the bottom, sides and front
The inspector should recommend that any ____ Within 5 to 6 feet be cut back
Tree limbs
The clearance for open overhead service conductors from the front, bottom and
sides of windows that______Is 3 feet
Open
Every 5 to 6 feet, rigid service mast should be secured to ___
The structure points
The method for installing a UF cable is __
Above ground
A service entrance with ____ Connected conductors is a phase 3 supply
Four
The typical supply for square brand electric meter is ___ amps
100
Most modern 200 amp electrical meters are marked ___
200 CL
,The minimum conductor size for a ___ Amp service is a 4 AWG copper or 2 AWG
aluminum
100
_____ Is a direct connection to the earth to aid in removing damaging transient
over voltages due to lightning
Grounding
____ Need to be bonded to the ground
All panel enclosures
Conductors between the main service disconnect to the distribution panels are
called ____
Feeders
How can you bonded a remote distribution panel?
By connecting the enclosure to the grounding bus
100 Amps is the ____Service required for a new single-family home
Minimum
The electrical supply should be shut down with ___ movements of the hand
Six or fewer
A common cause of arc flashes when removing panel fronts is ____?
Incorrect fasteners
A split bus electrical panel uses a double pole breaker to ___ The120 V circuits
Isolate
Which of the following would NOT be a defect?
Wire splices
Electrical service panel should be in a clear space measuring _____?
30 inches wide by 78 inches high by 36 inches deep
Fused main disconnects are usually a maximum of ___ amps
100
Upgrading to ___ fuses stops over fusing
S
Electric panel buses colored red, blue, and black are indicative of a ___?
Three phase supply
GFCI breakers have ____ conductors
Two
What wiring would require a specialist?
Solid conductor aluminum branch wiring
Or horizontally mounted face up countertop receptacles allowed?
No
The first kind of residential wiring is called?
Knob and tube
"Romex " cable that is not actually of the brand romex is called?
Type NM cable
What circuit should bathroom outlets be on?
20 amp GFCI
What is the minimum circuit for stoves?
40 amp
How many amps is an electrical clothes dryer?
, 30 Amp
Recessed ceiling lights should be rated ____ if installed against insulation.
IC
In a typical residential air-conditioning system, the ____Absorbs the heat energy
from the air passing through it, and transfers heat from the passing air to the
refrigerant moving inside
Evaporator
The ___ Is located inside the outdoor condenser unit and receives the low
pressure refrigerant vapor through the suction line
Compressor
The maximum discharge temperature for ducts of a warm air heating system is
____ F
250
A ___ is a device used to alter the volume of air passing through a confined cross
section by changing the size of the cross section area
Damper
T/F: You are required to inspect the insulation in unfinished spaces, including the
attic
True
T/F: you are required to inform your client about the absence or lack of adequate
insulation in areas of the house
True
Water vapor can move in three ways ___ transportation, diffusion through
materials, ___ diffusion
Air, thermal
___ Movement accounts for more than 98% of all water vapor movement and
building cavities
Air
___ diffusion is how moisture in a vapor state moves through material because of
a difference in pressure or difference in temperature
Vapor
___ Diffusion is water vapor moving through a material from a high pressure to a
low pressure or from a warm side of the wall to a cool side
Vapor
___Refers to the amount of moisture contained in a quantity of air compared to
the maximum amount of moisture in the air that could hold at the same
temperature
Relative humidity (RH)
4 general things you can do to prevent moisture intrusion is
1. Prevent water intrusion
2. ______
3. ______ air leaks
4. Provide an escape for moisture
Ventilate, stop
___Typically a thin metal strip found around the door
Flashing
