Week 4

When calculating load household cooking appliances rated over ____ kW should be included.

1.75

A drip loop's lowest point has a minimum vertical clearance of ____ ft.

10

Electric heating loads including associated motors are calculated at ___% of the total connected load.

100

Each laundry branch cicuit is calculated at no less than ____ volt amperes

1500

The maximum distance to any receptacle measured horizontally along the wall line is ____ in.

24

The vertical clearance above the roof level must be maintained for a distance of at least _____ft from all edges of the roof.

3

If each feeder is 100 amperes the minimum conductor size is ______

4 AWG copper (or 2 AWG aluminum)

A clothes dryer neutral load on a feeder is calculated at ____%

70

Conductors must have ____ and sufficient a ampacity to carry the current for the load as calculated

Adequate mechanical strength

Each occupant must have ready access to ____ protecting the conductors supplying that occupancy.

All overcurrent devices

When calculating appliance load in a one family dwelling ____ should be used

Compliance ratings

The conductor voltage that is dropped is a percentage of the source voltage and can be calculated by ______

Dividing voltage drop by the source voltage

Kitchen receptacles not serving countertops such as receptacles behind refrigerators ____ unless they are installed within 6 ft of the outside edge of the sink

Do not require GFCI protection

Derating is allowed for a total of four or more _____

Fastened-in place appliances

All 125 volt single phase 15 and 20 ampere dwelling unit outdoor receptacles use have -------

GFCI protection

All 15 or 20 ampere general use receptacle outlets except for small appliance and laundry are considered part of the ______

General lighting load

The higher the resistance through a conductor the _______

Higher the voltage

On long runs it may be necessary to _______ to compensate for voltage drop

Increase the branch-circuits conductors size

If the load requirements of a single phase installation are greater than the serving agency normally supplies through one service ____ are permitted.

Multiple services

A heat pump with supplementary heat is ____

Not considered a noncoinicident load

A minimum of ____ wall switch controlled lighting outlet is are required for dwelling hallways.

One

A load calculation on an individual unit in a multifamily dwelling must be calculated in accordance with one of the ____ methods

One family dwelling load-calculation

General receptacle installation provisions for multifamily dwellings are almost identical to those who for ______

One family dwellings

Service conductors supplying a building(or other structure) shall not _______

Pass through the interior of another building

The conductors and equipment that deliver energy from the electricity supply system to the wiring system of the premises are called the _____

Service

In a multiple occupancy building each occupant must have access to the unit's _______

Service disconnecting means

______ is defined as the underground conductors between the utility electric supply system and the service point

Service lateral

No more than ____ disconnects per service can be grouped In one location.

Six

____ is the maximum number of disconnects per service grouped in any one location.

Six

Skin effect and induction change the resistance in alternating current (ac) circuits therefore resistance of a conductor is _____

Slightly higher in a ac circuit

When calculating load the ____ can be omitted as long as they are never energized simultaneously

Smaller of two ( or more ) no coincident loads

The larger the circular mil area of a conductor the ________

Smaller the resistance

All electric equipment must be _____ to allow ready and safe equipment operation and maintenance

Surrounded by sufficient unobstructed space

Dwelling unit branch circuits shall supply only loads within or associated only with _____

That dwelling unit

The service disconnecting means for a one family dwelling load calculation must have a rating of at least _______

The calculated load

A multifamily dwelling is a building containing ____ dwelling units

Three or more

A single phase feeder or branch circuit conductor will have a total resistance ______ that of one conductor

Twice

The term appliance designates _______ equipment installed as a unit to perform specific function.

Utilization

Voltage drop in a single phase circuit can also be found using the formula ________.

Voltage=2XRXLXI