Question 1

It is common in commercial buildings for the load to operate mostly at the higher voltage and not utilize the ___________________.

Accepted Answer

neutral conductor

Question 2

A disconnecting means inside a building should not be installed near the point where supply conductors enter the building.

Accepted Answer

A disconnecting means should be installed near the point where supply conductors enter the building to quickly disconnect power in case of an emergency or for maintenance.

Question 3

A disconnect is permitted to be located outside and off the actual building as long as it is readily accessible.

Accepted Answer

A disconnect can be located outside and off the actual building as long as it is readily accessible, according to the National Electrical Code (NEC) requirements, ensuring safety and accessibility for maintenance or emergency purposes.

Question 4

With respect to the calculations of current as compared to the previous editions of the Code, it is permitted to round fractions down to the next lower whole ampere if less than ___________________ ampere(s).

Accepted Answer

The answer of With respect to the calculations of current...

Question 5

In general, how is total load subdivided?

Accepted Answer

The answer of In general, how is total load subdivided?...

Question 6

How is motor load calculated for three-phase motors?

Accepted Answer

The answer of How is motor load calculated for three-phase...

Question 7

A duplex receptacle represents a load of ____________________ VA.

Accepted Answer

The answer of A duplex receptacle represents a load of...

Question 8

[(Average range rating - 12) x 0.05(Value from column C of Table 220.55)] +(Value from column C of Table 220.55) = ____________________

Accepted Answer

The answer of [(Average range rating - 12) x 0.05(Value...

Question 9

A store has an area of 357.8 m².This store has a continuous load of 12,544VA, a noncontinuous load of 16,000VA, and a motor load of 5000VA.What is the total load for the store?

Accepted Answer

The answer of A store has an area of 357.8...

Question 10

Which Article provides the minimum requirements for feeder conductor size and overcurrent protection?

Accepted Answer

The answer of Which Article provides the minimum requirements for...

Question 11

When determining the average, all electric ranges rated greater than 8 3/4 kW but not greater than 12 kW are to be taken as though they were rated at ___________________ kW.

Accepted Answer

The answer of When determining the average, all electric ranges...

Question 12

The maximum unbalanced load for a service is the maximum load that can be expected on the neutral conductor.

Accepted Answer

The maximum unbalanced load refers to the highest load difference between the phases, which results in the maximum current flowing through the neutral conductor.

Question 13

Determine the load in volt-amperes for a 10-horsepower, 300-volt, single phase electric motor to be used in a feeder calculation.Hint: assume that the full load current of the motor is 30.8 amperes.

Accepted Answer

The answer of Determine the load in volt-amperes for a...

Question 14

In the case of a circuit breaker used as a disconnect, the maximum rating is the minimum continuous current setting of the circuit breaker.

Accepted Answer

The maximum rating of a circuit breaker used as a disconnect refers to the highest current it can safely interrupt or disconnect, not just its minimum continuous current setting.

Question 15

Feeders are main conductors that are ultimately subdivided into smaller circuits.

Accepted Answer

Feeders are the main conductors that carry electrical power from the distribution system or service equipment to the individual circuits, where they are then subdivided into smaller branches for distribution to various parts of a building or area.

Question 16

In general, what does the load for receptacles on 15- and 20-ampere, 125-volt general circuits depend upon?

Accepted Answer

The answer of In general, what does the load for...

Question 17

A multifamily dwelling unit has 25 units: eight with 11kW electric ranges, two with 9kW electric ranges, and fifteen with 14 kW electric ranges.Determine the average rating range for the 25 living units.

Accepted Answer

The answer of A multifamily dwelling unit has 25 units:...

Question 18

Noncontinuous loads generally operate for less than ____________________ hours.

Accepted Answer

The answer of Noncontinuous loads generally operate for less than...

Question 19

Identifying all of the loads that operate at the lower voltage and that would use the neutral is the method for determining the ____________________.

Accepted Answer

The answer of Identifying all of the loads that operate...

Question 20

Equipment ground-fault protection can sometimes be avoided by using multiple disconnects each rated less than ____________________ amperes.

Accepted Answer

The answer of Equipment ground-fault protection can sometimes be avoided...

Quiz 4: Services and Feeder Calculations