1. LEA Assessor Presentation LEP Results 2012-2013
EPIC ITB; teacher’s forum
30 May 2013

2. LEP RESULTS: April 2012 – April 2013 Why less candidates ???
Q1 Meter Board & Switchboard Wiring

3. LEP RESULTS; Jan - April 2012
Why less candidates ???

4. LEP RESULTS; Jan - April 2013
Why less candidates ???

5. Q1. Meter Board & Switchboard Wiring
Common Faults
Main Switch Type & Labelling
Main Earth Tag & Electrode Location Labelling
Main Earth Connection
RCD Polarity
Switchboard Wiring
Overload Protection
Equipment Selection
Underground Information
Use of Cable Ties
Hot Water Selection & Cabling
Address Information (Meter Panel, Pit)

6. Q1. Meter Board & Switchboard Wiring
HWS wired through the wire tie holes, instead of meter holes.
HWS wired through the wire tie holes, instead of meter holes.

7. Q1. Meter Board & Switchboard Wiring
80A Main Switch, not MCB
HWS neutral on protected Neutral Bar
Cables not connected to Main Switch

8. Q1. Meter Board & Switchboard Wiring
A good example of what is required

9. Q2. Electrical Installation Testing
2.1 Resistance of Main Earthing and Bonding Conductors
Common Faults
Reading of Meter
Wrong scale
Wrong unit
Poor accuracy
Meter Scale Selection
3 ohm
500 ohm
500V
Not selecting highest scale when reading FSD on 3 ohm scale

10. Q2. Electrical Installation Testing
Q2.2 Insulation Resistance of Wiring
Common Faults
Reading of Meter
Wrong scale selection
Wrong unit identified
Poor accuracy when reading result
Calibration of Meter
Understanding of calibration procedure
Interpretation of Pass/Fail Values
Constant rechecking calibration throughout test

11. Q2. Electrical Installation Testing
Q2.2 Insulation Resistance of Wiring
Common Faults
Reading of Meter
Wrong scale selection
Wrong unit identified
Poor accuracy when reading result
Calibration of Meter
Understanding of calibration procedure
Interpretation of Pass/Fail Values
Constant rechecking calibration throughout test

12. Q2. Electrical Installation Testing
Q2.3 Earthing & Insulation Resistance of Appliance
Common Faults
Identifying element
Sheathed
Non Sheathed
Reading of Meter
Wrong scale selection
Wrong unit identified
Poor accuracy when reading result
Calibration of Meter
Understanding of calibration procedure
Interpretation of Pass/Fail Values
Constant rechecking calibration throughout test

13. Q2. Electrical Installation Testing
Q2.4 Polarity Testing – Consumer Mains
Common Faults
Meter Scale Selection
Understanding the test reading requirements
Understanding test procedure
Selecting highest scale for FSD on 3 ohm
Pass versus Fail Values
Understanding pass/fail requirements
Interpreting meter readings

14. Q2. Electrical Installation Testing
Q2.5 Polarity Testing – Operation of Switches
Common Faults
Identifying Whether Neutral or Neither is Switched
Understanding importance of neutral polarity
Understanding test procedure
Interpreting test results

15. Q2. Electrical Installation Testing
Q2.6 Resistance of Protective Earthing Conductors
Common Faults
Meter Scale Selection
Understanding the test reading requirements
Understanding test procedure
Selecting correct scale for FSD
Pass versus Fail Values
Understanding pass/fail requirements
Interpreting meter readings
Omission of unit
Incorrect unit

16. Q3. MEM System Voltage Measurement
Q3.1 Voltage Measurements
Common Faults
Selection of Meter Scale
Understand 250V requirement
Selecting highest possible scale
Voltage Readings
Understanding difference between appliance frame and water pipe
Omission of the Supply Voltage

17. Q3. MEM System Voltage Measurement
Q3.2 Statement Explaining Voltage readings in Q3.1
Common Faults
Description of MEN System
Little or no understanding of MEN
Leaving blank, or mis-interpreting
Variable Voltages
Little or no understanding of voltage
Not fully understanding voltage potential versus current flow
Fault Identification
Unable to identify fault against relevant code
Mis-interpreting relevant code
Unable to determine/identify relevant code
Status of the Installation
Not identifying safe/unsafe as per codes

18. Q4. Visual Defects Common Faults Description of Defect & Location
Unclear description
Lack of certainty about what the defect is
AS/NZS 3000 Rule Number
Incomplete
Not Provided
Incorrect