Power Circuits Flashcards
What type of circuit is an “A1” circuit? (Ring or radial)
Ring
What type of circuit is an “A2” circuit? (Ring or radial)
Radial
What type of circuit is an “A3” circuit? (Ring or radial)
Radial
What rating protective device is used on an “A1” circuit?
30 or 32 Amps
What rating protective device is used on an “A2” circuit?
30 or 32 Amps
What rating protective device is used on an “A3” circuit?
20 Amps
How many unfused spurs can you have off a ring circuit?
1 spur for every socket
How many fused spurs can you have off a ring circuit?
Unlimited. As many as you want
What size cable is used for an “A1” circuit?
2.5mm2.
What size cable is used for an “A2” circuit?
4mm2.
What size cable is used for an “A3” circuit?
2.5mm2.
What size MICC cable is needed for an “A1” circuit?
1.5mm2.
What size MICC cable is needed for an “A2” circuit?
2.5mm2.
What size MICC cable is needed for an “A3” circuit?
1.5mm2.
What is the maximum floor area for an “A1” circuit?
100m2.
What is the maximum floor area for an “A2” circuit?
75m2.
What is the maximum floor area for an “A3” circuit?
50m2.
What type of circuit is need a double pole (DP) isolator switch?
Cooker circuits and it must be within 2 meters of the cooker
What must the cable match when connecting a shower circuit?
The connect load
What isolator do cookers, water heaters and showers need to be connected to?
DP - Double Pole isolators.
What things need to be on its own circuit?
- Showers
- Cookers
- Water heaters
What circuits need to be connected to a DP - Double Pole isolator?
Cooker, shower and water heaters.
