Domestic and Rural Electrician C of Q Free Assessment

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A layer of sand measuring ________ is required for a 240 volt power circuit for an armoured “TECK 90” cable installed in an underground trench under a residential walkway.

a) 75mm

b) 150mm

c) 150mm + outside diameter of the cable

d) 150mm + inside diameter of the cable

When non-magnetic metal-sheathed 400 amp single conductor cables are used for a residential service entrance, __________ are required.

a) non-magnetic ground bushings

b) grounding bushings

c) a) or b)

d) none of the above

Where service conductors are used solely for heating equipment, the portion of the load greater than 10KW shall apply a _____% demand factor.

a) 100

b) 90

c) 75

d) 60

Arc producing equipment installed on the side of a house shall not be located within m of a propane combustible gas vent.

a) 1

b) 1.2

c) 1.7

d) 3.0

22 meters of an 8/3 600 volt FT4 armoured cable installed vertically between two accessible pull boxes in a residential application used for interconnection of solar power and Supply Authority power supplies shall be supported by ________ straps or clips.

a) 16

b) 15

c) 14

d) 1

AWG means:

a) American Wire Gauge

b) Brown and Sharpe Wire Gauge

c) sizes as applied to non-ferrous sheet metal

d) all of the above

What will the voltmeter read when fuse #1 has been blown?

a) 0

b) 60

c) 120

d) 240

Conductors of a branch circuit supplying a range in a dwelling unit shall have a demand of:

a) 8 KW where the rating is not greater than 12 KW

b) 6 KW where the rating is not greater than 12 KW

c) 8 KW where the rating is greater than 12 KW

d) 6 KW where the rating is greater than 12 KW

A(n) __________ is the probable cause when half the house lights go dim and half brighten after a kettle is plugged in.

a) unbalanced load

b) defective neutral connection

c) voltage sag

d) voltage spike

Where a single dwelling service exceeds 125 amps and is not heated by a central electric furnace, how many 120 V branch circuit positions are required in the panelboard?

a) 16

b) 30

c) 40

d) 48

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Domestic and Rural Electrician C of Q Free Assessment