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College > Power Circuits > Flashcards

Power Circuits Flashcards

1
Q

What type of circuit is an “A1” circuit? (Ring or radial)

A

Ring

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2
Q

What type of circuit is an “A2” circuit? (Ring or radial)

A

Radial

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3
Q

What type of circuit is an “A3” circuit? (Ring or radial)

A

Radial

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4
Q

What rating protective device is used on an “A1” circuit?

A

30 or 32 Amps

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5
Q

What rating protective device is used on an “A2” circuit?

A

30 or 32 Amps

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6
Q

What rating protective device is used on an “A3” circuit?

A

20 Amps

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7
Q

How many unfused spurs can you have off a ring circuit?

A

1 spur for every socket

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8
Q

How many fused spurs can you have off a ring circuit?

A

Unlimited. As many as you want

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9
Q

What size cable is used for an “A1” circuit?

A

2.5mm2.

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10
Q

What size cable is used for an “A2” circuit?

A

4mm2.

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11
Q

What size cable is used for an “A3” circuit?

A

2.5mm2.

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12
Q

What size MICC cable is needed for an “A1” circuit?

A

1.5mm2.

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13
Q

What size MICC cable is needed for an “A2” circuit?

A

2.5mm2.

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14
Q

What size MICC cable is needed for an “A3” circuit?

A

1.5mm2.

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15
Q

What is the maximum floor area for an “A1” circuit?

A

100m2.

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16
Q

What is the maximum floor area for an “A2” circuit?

A

75m2.

17
Q

What is the maximum floor area for an “A3” circuit?

A

50m2.

18
Q

What type of circuit is need a double pole (DP) isolator switch?

A

Cooker circuits and it must be within 2 meters of the cooker

19
Q

What must the cable match when connecting a shower circuit?

A

The connect load

20
Q

What isolator do cookers, water heaters and showers need to be connected to?

A

DP - Double Pole isolators.

21
Q

What things need to be on its own circuit?

A
  1. Showers
  2. Cookers
  3. Water heaters
22
Q

What circuits need to be connected to a DP - Double Pole isolator?

A

Cooker, shower and water heaters.

College (21 decks)

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