Load Calculations (Branch And Feeder Circuits) –
Questions & Correct Answers
The minimum size feeder and overcurrent protection to supply five pieces of
x-ray equipment with a momentary rating of 125 A each in a healthcare
facility is Right Ans - 131 amps
A mobile home park has 26 mobile homes each with a calculated load of
22,000 V amps. What is the amps of the service conductors required to serve
this park Right Ans - 572
A recreational Vic Park has 25 sites. Each site is equipped with a 20 amp and a
30 amp receptacle. The service will also serve a service building on the
premises that will have a computed load of 87 amp. What is the minimum
feeder amp for the service conductors supplying this vehicle parked Right
Ans - 245 amp
Temporary wiring for trade show display booths in exhibition halls shall be
Right Ans - Permitted to be laid on floors
The branch circuit supplying the elevator car lights and accessories shall
Right Ans - Be a dedicated branch circuit for each car
In class one, division one locations, threaded joints shall be made up with at
least blank threads fully engaged Right Ans - Five
In class one, division one, but thickness of the sealing compound shall in no
case be less than blank thick Right Ans - 5/8 of an inch
Before doing an electrical service in Suffolk County and electrician should
obtain Right Ans - An electrical license
What is retainage Right Ans - Percentage of the amounts the contractor
held by the owner until the job is satisfactorily completed
Why should a contractor have a good understanding and working knowledge
of contract law Right Ans - In order to write his own contracts without
using a lawyer
, What is a contractors break even point Right Ans - When he has enough
business for his gross profit to cover his overhead
A soul proprietor must provide workers compensation when he has what
minimum number of employees Right Ans - One
When screening applicants for a job opening what medical information maybe
use as a basis for denying employment Right Ans - Evidence of illegal drug
use
Which of the following is not allowed for a licensed electrical contractor in
Suffolk County Right Ans - Operating without liability insurance
A helper earns $10 per hour and works eight hours per day on Monday,
Tuesday, and Friday. He also works 10 hours on Thursday and Saturday.
There is no work on Wednesday. Well work is for the same contractor. How
many hours are subject to the overtime pay Right Ans - Four
If two or more persons who have furnish materials or services claim a lien,
which lien will have prioriry Right Ans - The first lien filed
What is the annual report provided to the federal government of the payroll
wages your employees earned during a calendar year Right Ans - W2 wage
and tax statement
100 feet of rigid nonmetallic conduit installed above great outdoors where
there is a winter temperature of -10°F and a summer temperature of 110°F
would have a change in length of Right Ans - 4.87 inches
How many amp volts must be allowed for lighting in a 20 foot show window
Right Ans - 4000
A 208 V three-phase feeder is to supply the follow in the loads. Two 5 HP,
three phase induction monitors, one 3 hp, single phase 208 volt induction
motor, and lighting in a 150 x 100 square foot office area with 92- 120 volt
receptacles. The minimum amp of the feeder is Right Ans - 276 amp
Questions & Correct Answers
The minimum size feeder and overcurrent protection to supply five pieces of
x-ray equipment with a momentary rating of 125 A each in a healthcare
facility is Right Ans - 131 amps
A mobile home park has 26 mobile homes each with a calculated load of
22,000 V amps. What is the amps of the service conductors required to serve
this park Right Ans - 572
A recreational Vic Park has 25 sites. Each site is equipped with a 20 amp and a
30 amp receptacle. The service will also serve a service building on the
premises that will have a computed load of 87 amp. What is the minimum
feeder amp for the service conductors supplying this vehicle parked Right
Ans - 245 amp
Temporary wiring for trade show display booths in exhibition halls shall be
Right Ans - Permitted to be laid on floors
The branch circuit supplying the elevator car lights and accessories shall
Right Ans - Be a dedicated branch circuit for each car
In class one, division one locations, threaded joints shall be made up with at
least blank threads fully engaged Right Ans - Five
In class one, division one, but thickness of the sealing compound shall in no
case be less than blank thick Right Ans - 5/8 of an inch
Before doing an electrical service in Suffolk County and electrician should
obtain Right Ans - An electrical license
What is retainage Right Ans - Percentage of the amounts the contractor
held by the owner until the job is satisfactorily completed
Why should a contractor have a good understanding and working knowledge
of contract law Right Ans - In order to write his own contracts without
using a lawyer
, What is a contractors break even point Right Ans - When he has enough
business for his gross profit to cover his overhead
A soul proprietor must provide workers compensation when he has what
minimum number of employees Right Ans - One
When screening applicants for a job opening what medical information maybe
use as a basis for denying employment Right Ans - Evidence of illegal drug
use
Which of the following is not allowed for a licensed electrical contractor in
Suffolk County Right Ans - Operating without liability insurance
A helper earns $10 per hour and works eight hours per day on Monday,
Tuesday, and Friday. He also works 10 hours on Thursday and Saturday.
There is no work on Wednesday. Well work is for the same contractor. How
many hours are subject to the overtime pay Right Ans - Four
If two or more persons who have furnish materials or services claim a lien,
which lien will have prioriry Right Ans - The first lien filed
What is the annual report provided to the federal government of the payroll
wages your employees earned during a calendar year Right Ans - W2 wage
and tax statement
100 feet of rigid nonmetallic conduit installed above great outdoors where
there is a winter temperature of -10°F and a summer temperature of 110°F
would have a change in length of Right Ans - 4.87 inches
How many amp volts must be allowed for lighting in a 20 foot show window
Right Ans - 4000
A 208 V three-phase feeder is to supply the follow in the loads. Two 5 HP,
three phase induction monitors, one 3 hp, single phase 208 volt induction
motor, and lighting in a 150 x 100 square foot office area with 92- 120 volt
receptacles. The minimum amp of the feeder is Right Ans - 276 amp
