Module 11 practice test

Pataasin ang iyong marka sa homework at exams ngayon gamit ang Quizwiz!

Which of the following must NEVER be used as a grounding electrode?

a metal underground gas pipe system

a feeder is used to feed

a subpanel from the main service panel

a grounding electrode conductor must be

made of copper, aluminium, copper-clad aluminum.

In a panelboard, the black circuit conductor in a lighting circuit is connected to a(n)

overcurrent protection device

One of the advantages of electric heat is that

Initial installation costs are less than other types of systems

The NEC article that provides rules for demand factors is

NEC Article 220

The NEC lists requirements for installing service disconnects is ?

NEC article 230

The NEC article that covers equipment grounding and equipment grounding conductors is?

NEC article 250

The NEC article that covers the installation of pools and spas is

NEC article 680

Low voltage system wiring is covered in

NEC article 725

an example of a location in a dwelling where a receptacle must have GFCI protection

garage

Listed FMC may be used as an equipment grounding conductor if the circuit conductors are protected by overcurrent devices rated at ______

20A or less

a residence with a 1,000 square feet of living space has a general lighting load of ?

3,000 VA

Applying the correct demand factors, the net general load for the residence in figure 1 is?

3,210VA

The NEC general lighting load for the home in Figure 1 is?

3,600VA

the minimum clearance in a service drop conductor over a residential driveway is reduced to 12' (3.7m) when the voltage is limited to?

300V to ground

Cables routed through bored holes in framing members must maintain a distance from the nearest edge of not less than ______.

1 1/4'' (32cm)

The square footage of living space in the home in Figure 1 is?

1,200 ft squared

The NEC allows the load calculation for the grounded neutral conductor supplying electric ranges and dryers to have a demand factor of?

70%

a current imbalance as low as 4 milliamps may be detected by a(n)

GFCI sensor

a type of cable with a corrugated sheath that has a maximum bend radius of 7 times the cable diameter is...

Type MC

Romex is another name for?

Type NM cable

Power to the entire residence is shut of at the main service disconnect located _______.

at the panel board

The conductors that extend from the panelboard to various outlets are called _____.

branch circuits

a GFCI sensor will trip when

current in the neutral load is less then current in the hot load.

In residential construction, conduit is most likely to be used where conductors are

embedded in concrete

The green screw on a receptacle connects to the

equipment grounding conductor

the main bonding jumper is located at the

service disconnect

a switch used to control one or more lamps from two different locations is called a(n)

three-way switch

According to the NEC, the small appliance loads in each kitchen area of dwelling must be served by at least?

two 120V, 20A small branch circuits


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