Test with Questions and Correct Answers
What is the output in KW of a 5000 kVA transformer feeding a load that has a PF
of 80% is? - ANSWER-4000 kW
Banks and office buildings the receptacle loads shall be calculated to be the larger
of _______ or ________. - ANSWER-1 VA per ft^2 or 180VA
Track lighting calculations ______ shall be included for every 2 feet of lighting
track or fraction there of. - ANSWER-150 VA
For Air conditioning circuits a load of not less than _____shall be included with
each two wire circuit. This load shall be permitted to be included with the general
lighting load and subject to section 220.42 in table 220.42. - ANSWER-1500 VA
The main factors for non-dwelling receptacle loads first 10 kVA or less at
______remainder over 10 kVA at _______. - ANSWER-100%
50%
Fixed electric space heating loads shall be calculated at _________of the total
connected load however in no case shall a feeder or service load current rating be
less than the rating of the largest branch circuit supplied. - ANSWER-100%
Small appliance circuit load in each dwelling unit the load shall be calculated at
______VA for each to wire small appliance branch circuit as covered by 210.11
C1. - ANSWER-1500
1
,A load of not less than ______volt amperes shall be included for each to wire
laundry branch circuit. - ANSWER-1500
It shall be permissible to apply a demand factor of ______ to a nameplate rating
load of ________or more appliances fastened in place other than electric ranges
clothes dryers space heating equipment or air-conditioning equipment that are
served by the same feeder or service in a one family to family or multi family
dwelling. - ANSWER-75%
4
The load for household electric clothes dryer's in a dwelling unit shall be either
_________or the nameplate rating whichever is larger for each dryer served. -
ANSWER-5000 watts
Where ______or more single phase ranges are supplied by a three phase 4 wire
feeder or service the total load Shelby calculated on the basis of twice the
maximum number connected between any two phases. - ANSWER-Two
In no case shall the feeder or service calculated load be less than the sum of the
largest ______kitchen equipment loads. - ANSWER-Two
The feeder conductor and Pacitti shall not be less than that of the service entrance
conductors where the feeder conductors carry the total load supplied by service
conductors with an ampacity of _______or less. - ANSWER-55A
For other than dwelling occupancy's, banks, or office buildings each receptacle
outlet shall be calculated at not less than ________ VA. - ANSWER-180
2
,Open conductors which are not service entrance cable's shall not be installed less
than ______________ feet above grade level. - ANSWER-10
A load demand factor of 75% is permitted for _____ or more appliances fastened
in place such as waste disposal's, dishwashers, trash compactor's, water heaters,
etc. - ANSWER-4
Open conductors shall be ______on glass or porcelain knobs, racks, brackets or
stain insulators. - ANSWER-Supported
Open conductors installed outside shall be separated from open conductors of other
circuits or systems by not less than ________. - ANSWER-4 inches
Overhead feeder conductors shall have a minimum _________vertical clearances
over residential property and driveways as well as those commercial areas not
subject to truck traffic where the voltage is limited to 300 V to ground. -
ANSWER-12 feet
The minimum clearance for overhead feeder conductors not exceeding 600 V that
passover commercial areas subject to truck traffic is _________. - ANSWER-18
feet
Conductors are considered outside a building when they are buried under not less
than _______. - ANSWER-2 inches
Service conductors installed as unjacketed multi conductor cable shall have a
minimum clearance of _________from windows that are designed to be opened,
doors, porches, stairs, fire escapes or other similar locations. - ANSWER-3 feet
3
, Service drops and install over roofs shall have a vertical clearance of
_______above the roof surface unless a lesser distance is permitted by an
exception. - ANSWER-8 feet
When the service disconnecting means is a power operated switch or circuit
breaker it shall be able to be opened by hand in the event of a ________________.
- ANSWER-Power supply failure
The vertical clearance from ground level over a residential driveway for overhead
service conductors not subject to truck traffic and are less than 300 V to ground
shall be _________feet. - ANSWER-12
Where it is impractical to locate the service head above the point of attachment, the
service head location shall be permitted not farther than _________ from the point
of attachment. - ANSWER-24 inches
What is true about installation of type 1 TVSS? - ANSWER-Can be connected to
the line side of the service disconnect
Ground fault protection of equipment shall be provided for solidly grounded way
electrical services of more than 150 V to ground, but not exceeding 600 V fees the
fees for each service disconnecting means rated __________. - ANSWER-1000
Amps
The maximum voltage drop from service point to the last overcurrent device in a
dwelling unit is ___________. - ANSWER-4%
What is the minimum lateral service conductor size allowed for a dwelling unit? -
ANSWER-#4 copper & #2 Aluminum
4