Internachi Florida State Exam
The typical electrical service for homes in North America is a
? correct answers120\240 Volt
The 240 Volt circuit is used for? correct answersAppliances
The return conductor (a.k.a. the neutral) is at volts because it is
grounded to the electric panel correct answersZero
Most 120 Volt circuits are wired to deliver or Amps of
current correct answers15, 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 correct answersResidential, two
The point of attachment of the service drop conductors to a building or
structure must have a clearance of at least ft correct answers10
Vertical clearance for overhead conductors they are over public
streets correct answers18 feet
Vertical clearance for overhead conductors that are over commercial
parking areas correct answers18 feet
Vertical clearance for overhead conductors that are over swimming
pools? correct answers22 feet and 6 inches, 10 feet horizontal
Vertical clearance for overhead conductors that are over residential
properties? correct answers12 feet
Vertical clearance for overhead conductors that are from sides of
doors? correct answers3 feet from the bottom, sides and front
The inspector should recommend that any Within 5 to 6 feet be cut
back correct answersTree limbs
The clearance for open overhead service conductors from the front, bottom
and sides of windows that Is 3 feet correct answersOpen
Every 5 to 6 feet, rigid service mast should be secured to correct
answersThe structure points
,The method for installing a UF cable is correct answersAbove ground
A service entrance with Connected conductors is a phase 3 supply
correct answersFour
The typical supply for square brand electric meter is amps correct
answers100 Most modern 200 amp electrical meters are marked correct
answers200 CL
The minimum conductor size for a Amp service is a 4 AWG copper or 2
AWG aluminum correct answers100
Is a direct connection to the earth to aid in removing damaging
transient over voltages due to lightning correct answersGrounding
Need to be bonded to the ground correct answersAll panel enclosures
Conductors between the main service disconnect to the distribution
panels are called
correct answersFeeders
How can you bonded a remote distribution panel? correct answersBy
connecting the enclosure to the grounding bus
100 Amps is the Service required for a new single-family home
correct answersMinimum
The electrical supply should be shut down with movements of the hand
correct answersSix or fewer
A common cause of arc flashes when removing panel fronts is ?
correct answersIncorrect fasteners
A split bus electrical panel uses a double pole breaker to The120 V
circuits correct answersIsolate
Which of the following would NOT be a defect? correct answersWire splices
Electrical service panel should be in a clear space measuring ?
correct answers30 inches wide by 78 inches high by 36 inches deep
Fused main disconnects are usually a maximum of amps correct
answers100 Upgrading to fuses stops over
fusing correct answersS
,Electric panel buses colored red, blue, and black are indicative of a
?
correct answersThree phase supply
GFCI breakers have conductors correct answersTwo
What wiring would require a specialist? correct answersSolid conductor
aluminum branch wiring
Or horizontally mounted face up countertop receptacles allowed? correct
answersNo The first kind of residential wiring is called? correct
answersKnob and tube
"Romex " cable that is not actually of the brand romex is called? correct
answersType NM cable
What circuit should bathroom outlets be on? correct answers20
amp GFCI What is the minimum circuit for stoves? correct
answers40 amp
How many amps is an electrical clothes dryer? correct
answers30 Amp
Recessed ceiling lights should be rated if installed against insulation.
correct answersIC
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 correct answersEvaporator
The Is located inside the outdoor condenser unit and receives the low
pressure refrigerant vapor through the suction line correct
answersCompressor
The maximum discharge temperature for ducts of a warm air heating
system is F
correct answers250
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
correct answersDamper
T/F: You are required to inspect the insulation in unfinished spaces,
including the attic correct answersTrue
T/F: you are required to inform your client about the absence or lack of
adequate insulation in areas of the house correct answersTrue
Water vapor can move in three ways transportation, diffusion
through materials,
diffusion correct answersAir, thermal
, Movement accounts for more than 98% of all water vapor movement
and building cavities correct answersAir
diffusion is how moisture in a vapor state moves through material
because of a difference in pressure or difference in temperature correct
answersVapor
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
correct answersVapor
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 correct answersRelative 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 correct answersVentilate, stop
Typically a thin metal strip found around the door correct
answersFlashing
Be sure to communicate to your clients that your inspection is a ,
inspection of the readily accessible components of the house correct
answersVisual, non-invasive
Insulations resistance to heat flow is measured or rated in terms of
its thermal resistance, a.k.a. correct answersR-value
Insulation in between studs in a wall does not restrict the heat flow through
those studs. This heat flow is called ? correct answersThermal bridging
cups of water enter through a "1/2 inch round hole via air
transportation in a year" correct answers5
And 100 square ft wall, Of water can diffuse through drywall without
a vapor diffusion retarder in a year correct answers1 cup
If ducts of the HVAC system run through uncondition spaces in the house,
such as a crawlspace or attic, then the ductwork should be correct
answersInsulated
In general, -cell foams allow water to move through the wall more
easily then
-cell foams correct answersOpen, closed
Of attic areas is intended to prevent the accumulation of moisture vapor
in the attic correct answersVentilation
The typical electrical service for homes in North America is a
? correct answers120\240 Volt
The 240 Volt circuit is used for? correct answersAppliances
The return conductor (a.k.a. the neutral) is at volts because it is
grounded to the electric panel correct answersZero
Most 120 Volt circuits are wired to deliver or Amps of
current correct answers15, 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 correct answersResidential, two
The point of attachment of the service drop conductors to a building or
structure must have a clearance of at least ft correct answers10
Vertical clearance for overhead conductors they are over public
streets correct answers18 feet
Vertical clearance for overhead conductors that are over commercial
parking areas correct answers18 feet
Vertical clearance for overhead conductors that are over swimming
pools? correct answers22 feet and 6 inches, 10 feet horizontal
Vertical clearance for overhead conductors that are over residential
properties? correct answers12 feet
Vertical clearance for overhead conductors that are from sides of
doors? correct answers3 feet from the bottom, sides and front
The inspector should recommend that any Within 5 to 6 feet be cut
back correct answersTree limbs
The clearance for open overhead service conductors from the front, bottom
and sides of windows that Is 3 feet correct answersOpen
Every 5 to 6 feet, rigid service mast should be secured to correct
answersThe structure points
,The method for installing a UF cable is correct answersAbove ground
A service entrance with Connected conductors is a phase 3 supply
correct answersFour
The typical supply for square brand electric meter is amps correct
answers100 Most modern 200 amp electrical meters are marked correct
answers200 CL
The minimum conductor size for a Amp service is a 4 AWG copper or 2
AWG aluminum correct answers100
Is a direct connection to the earth to aid in removing damaging
transient over voltages due to lightning correct answersGrounding
Need to be bonded to the ground correct answersAll panel enclosures
Conductors between the main service disconnect to the distribution
panels are called
correct answersFeeders
How can you bonded a remote distribution panel? correct answersBy
connecting the enclosure to the grounding bus
100 Amps is the Service required for a new single-family home
correct answersMinimum
The electrical supply should be shut down with movements of the hand
correct answersSix or fewer
A common cause of arc flashes when removing panel fronts is ?
correct answersIncorrect fasteners
A split bus electrical panel uses a double pole breaker to The120 V
circuits correct answersIsolate
Which of the following would NOT be a defect? correct answersWire splices
Electrical service panel should be in a clear space measuring ?
correct answers30 inches wide by 78 inches high by 36 inches deep
Fused main disconnects are usually a maximum of amps correct
answers100 Upgrading to fuses stops over
fusing correct answersS
,Electric panel buses colored red, blue, and black are indicative of a
?
correct answersThree phase supply
GFCI breakers have conductors correct answersTwo
What wiring would require a specialist? correct answersSolid conductor
aluminum branch wiring
Or horizontally mounted face up countertop receptacles allowed? correct
answersNo The first kind of residential wiring is called? correct
answersKnob and tube
"Romex " cable that is not actually of the brand romex is called? correct
answersType NM cable
What circuit should bathroom outlets be on? correct answers20
amp GFCI What is the minimum circuit for stoves? correct
answers40 amp
How many amps is an electrical clothes dryer? correct
answers30 Amp
Recessed ceiling lights should be rated if installed against insulation.
correct answersIC
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 correct answersEvaporator
The Is located inside the outdoor condenser unit and receives the low
pressure refrigerant vapor through the suction line correct
answersCompressor
The maximum discharge temperature for ducts of a warm air heating
system is F
correct answers250
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
correct answersDamper
T/F: You are required to inspect the insulation in unfinished spaces,
including the attic correct answersTrue
T/F: you are required to inform your client about the absence or lack of
adequate insulation in areas of the house correct answersTrue
Water vapor can move in three ways transportation, diffusion
through materials,
diffusion correct answersAir, thermal
, Movement accounts for more than 98% of all water vapor movement
and building cavities correct answersAir
diffusion is how moisture in a vapor state moves through material
because of a difference in pressure or difference in temperature correct
answersVapor
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
correct answersVapor
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 correct answersRelative 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 correct answersVentilate, stop
Typically a thin metal strip found around the door correct
answersFlashing
Be sure to communicate to your clients that your inspection is a ,
inspection of the readily accessible components of the house correct
answersVisual, non-invasive
Insulations resistance to heat flow is measured or rated in terms of
its thermal resistance, a.k.a. correct answersR-value
Insulation in between studs in a wall does not restrict the heat flow through
those studs. This heat flow is called ? correct answersThermal bridging
cups of water enter through a "1/2 inch round hole via air
transportation in a year" correct answers5
And 100 square ft wall, Of water can diffuse through drywall without
a vapor diffusion retarder in a year correct answers1 cup
If ducts of the HVAC system run through uncondition spaces in the house,
such as a crawlspace or attic, then the ductwork should be correct
answersInsulated
In general, -cell foams allow water to move through the wall more
easily then
-cell foams correct answersOpen, closed
Of attic areas is intended to prevent the accumulation of moisture vapor
in the attic correct answersVentilation
