Worksheets3004 LO2 13 Electrical fittings & Safety , RCD, IP, Fuses
Total questions: 18
Worksheet time: 9mins
What are the two numbers on here called?
IP rating
Safety rating
IP address line
Connection address number
IP network link
Main system link
Power rating
I = Current
P = Power
What is the first number?
Protection against solids like dust and stones
Protection against liquids like water
Protection against over-current
Protection against voltage spikes
What is the second number?
Protection against solids like dust and stones
Protection against liquids like water
Protection against over-current
Protection against voltage spikes
What is the correct number for strong water hose protection?
First digit 6
Second digit 6
First digit 5
Second digit 5
First digit 4
What is the difference between the plugs?
New Zealand uses #1
Australia uses #2
#1 is for 230V
#2 is for 400V
#3 is for DC Voltage
#1 is 10A
#2 is 15A
#3 is 20A
Plus #2 and #3 have a higher IP rating
What is rating for #2?
400V
15A
IP66
10A
What is rating for #3?
1000V
20A
IP65
15A
What is rating for #1?
1000V
10A
IP65
15A
What does the symbol on the right stand for?
M.C.B.
Isolator
Switch
RCD
What does the symbol on the right stand for?
M.C.B.
Isolator
Switch
RCD
What is the C for on the circuit breaker?
Tripping curve
RCD balanced current
Current Max
Current Min
What does the symbol on the right stand for?
M.C.B.
Isolator
Switch
RCD
What current imbalance would this detect in a home?
3A
0.3A
0.03A
0.003A
What current imbalance would this detect in a hospital?
30mA
10mA
3mA
100mA
What are these?
Fire retardant fuses
High current fuses
High rupturing fuses
Rewirable fuses
What are these?
Fire retardant fuses
High current fuses
High rupturing fuses
Rewirable fuses
How do we use these?
Only for split level housing
Only on gas stoves
Not allowed anymore on new build houses, but can replace
In bathrooms only
Can we replace the wire on these?
With ceramic agnimestons - Yes
They are illegal - No
With higher rated fuse wire - Yes
With exact rated fuse wire - Yes
