Question 1

When calculating load, the ____ can be omitted, as long as they are never energized simultaneously.&#10;A) smallest branch circuits&#10;B) smaller of two (or more) noncoincident loads&#10;C) branch circuits containing the kitchen and laundry room&#10;D) larger of two (or more) branch circuits

Accepted Answer

When calculating load, the smaller of two (or more) noncoincident loads can be omitted as long as they are never energized simultaneously. This is because it is unlikely that both loads will be running at their maximum capacity at the same time.

Question 2

No more than ____ disconnects per service can be grouped in one location.&#10;A) two&#10;B) four&#10;C) six&#10;D) eight

Accepted Answer

According to the National Electrical Code (NEC), no more than six disconnects per service can be grouped in one location.

Question 3

Derating is allowed for a total of four (or more) ____.&#10;A) fastened-in-place appliances&#10;B) branch circuits&#10;C) kitchen receptacles&#10;D) basement receptacles

Accepted Answer

According to NEC 310.15(B)(2)(a), derating is allowed for a total of four or more fastened-in-place appliances.

Question 4

All 15- or 20-ampere general-use receptacle outlets (except for small-appliance and laundry) are considered part of the ____.&#10;A) main branch&#10;B) central service&#10;C) general lighting load&#10;D) general service

Accepted Answer

All 15- or 20-ampere general-use receptacle outlets, except for those designated for small appliances and laundry, are considered part of the general lighting load according to electrical codes and standards. This classification helps in determining the capacity and distribution of electrical circuits in a building.

Question 5

The term appliance designates ____ equipment installed as a unit to perform specific function(s).&#10;A) laundry&#10;B) kitchen&#10;C) compliance&#10;D) utilization

Accepted Answer

The term appliance designates utilization equipment installed as a unit to perform specific function(s), as it refers to devices designed for a particular use or function, typically in a home or business setting.

Question 6

In a multiple-occupancy building, each occupant must have access to the unit's ____.&#10;A) main feeder line&#10;B) service meter&#10;C) fuse box&#10;D) service disconnecting means

Accepted Answer

In a multiple-occupancy building, each occupant must have access to the unit's service disconnecting means, which is the switch that controls the power supply to the individual unit. This allows each occupant to control their own power usage and shut off the power in the event of an emergency or if maintenance is needed. The main feeder line, service meter, and fuse box may be located outside of the individual unit and are typically accessed by building maintenance staff or utility workers.

Question 7

A load calculation on an individual unit in a multifamily dwelling must be calculated in accordance with one of the ____.&#10;A) multi-family dwelling load-calculation methods&#10;B) multi-family dwelling load-calculation methods and divided by the number of units per floor&#10;C) one-family dwelling load-calculation methods&#10;D) one-family dwelling load-calculation methods and multiplied by the number of units per floor

Accepted Answer

The correct approach for calculating a load on an individual unit in a multifamily dwelling is to use the one-family dwelling load-calculation methods. This is because each unit operates independently in terms of electrical usage, similar to a single-family home.

Question 8

When calculating load, household cooking appliances rated over ____ kW should be included.&#10;A) 1.25&#10;B) 1.50&#10;C) 1.75&#10;D) 10

Accepted Answer

Household cooking appliances rated over 1.75 kW should be included when calculating load, as they are considered significant enough to impact the overall electrical load calculation.

Question 9

When calculating appliance load in a one-family dwelling, ____ should be used.&#10;A) demand factors&#10;B) compliance ratings&#10;C) BTUs&#10;D) nameplate ratings

Accepted Answer

Nameplate ratings should be used when calculating appliance load in a one-family dwelling. The nameplate rating is the maximum amount of electric power an appliance is designed to draw under normal operating conditions. It is important to use this information to properly size the electrical service and prevent overload. Demand factors, compliance ratings, and BTUs are not directly relevant to calculating appliance load.

Question 10

The service disconnecting means for a standard load calculation for a single unit of a multifamily dwelling must have a rating of at least ____.&#10;A) the calculated load&#10;B) the load for a single unit&#10;C) one quarter the total load&#10;D) one half the total load

Accepted Answer

The service disconnecting means must have a rating of at least the calculated load to ensure it can handle the maximum expected load without risk of overloading or failure.

Question 11

A heat pump with supplementary heat is ____.&#10;A) considered a coincident load&#10;B) not considered a noncoincident load&#10;C) sometimes considered a coincident load&#10;D) sometimes considered a noncoincident load

Accepted Answer

The answer of A heat pump with supplementary heat is...

Question 12

Each laundry branch circuit is calculated at no less than ____ volt-amperes.&#10;A) 1000&#10;B) 1100&#10;C) 1200&#10;D) 1500

Accepted Answer

The answer of Each laundry branch circuit is calculated at...

Question 13

A clothes dryer neutral load on a feeder is calculated at ____%.&#10;A) 50&#10;B) 60&#10;C) 70&#10;D) 80

Accepted Answer

The answer of A clothes dryer neutral load on a...

Question 14

Electric heating loads (including associated motors) are calculated at ____% of the total connected load.&#10;A) 75&#10;B) 100&#10;C) 125&#10;D) 150

Accepted Answer

The answer of Electric heating loads (including associated motors) are...

Deck 11: Load Calculations