# Quiz 4: Services and Feeder Calculations

Trade & Technology

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True False

True

Q 2Q 2

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

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True False

False

Q 3Q 3

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

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True False

True

Q 4Q 4

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

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True False

Q 5Q 5

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

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True False

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Q 8Q 8

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

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Q 9Q 9

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

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Q 10Q 10

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

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Q 11Q 11

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

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Q 12Q 12

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.

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Q 13Q 13

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).

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Q 15Q 15

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.

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Q 16Q 16

A store has an area of 357.8 m

^{2}.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?Free

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Q 17Q 17

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

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Q 19Q 19

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.

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Q 20Q 20

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

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