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

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

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

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

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)

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.

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

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

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

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

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

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

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

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

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

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

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

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