Section Ingoa Description
File Post to a Forum (example file)
Course Information File Course Introduction and Info 2 March 2020
Introduction Topics File Add a file to an Assignment activity
File Calculators - A Practical Guide

A practical guide to using your calculator. This is not aimed at any particular model of calculator.

Your calculator may have special features or particular ways of performing operations. Consult your calculator's manual.

File 20200615 Series and Parallel Circuits

These are the slides delivered on Monday 15 June and Tuesday 16 June 2020, on series and parallel circuits.

For the circuits in the last two slides, please view the Answers and Commentary to get see the solutions.

File Units of Measurement

Introduction to units of measurement, including the seven SI base units and some electrical units.

File Book "A" - Kirchhoff's Law and Basic Circuits

Kirchhoff's law and basic resistance circuits.

Updated on 6 April 2020 with page numbers.

The answers to the worksheets are on pages 50 and 51.

File Book "C" - Mathematics Workbook

The introductory mathematics workbook.

Page Voltage Sources and Current Sources - NEW 29 APRIL 2020
Page Circuit Analysis using Modified Nodal Analysis - NEW 29 APRIL 2020
Page The Voltage Divider - UPDATED 22 April 2020
Page The Current Divider - NEW 22 April 2020
Page Worksheet 1A - Basic Ohm's Law - Solutions and Commentary
Page Worksheet 1B - Basic Ohm's Law - Solutions and Commentary
Page Worksheet 1C - Basic Ohm's Law - Solutions and Commentary
Page Worksheet 2A - Series Circuit Calculations - Solutions and Commentary
Page Worksheet 2B - Series Circuit Calculations - Solutions and Commentary
Page Worksheet 3A - Series Circuit Calculations - Solutions and Commentary
Page Worksheet 5A - Parallel Circuit Calculations - Solutions and Commentary
Page Worksheet 6A - Parallel Circuit Calculations - Solutions and Commentary
Page Worksheet 8A - Series and Parallel problems - Words - Solutions and Commentary
Page Worksheet 9A - Internal Resistance of a power supply - Solutions and Commentary
Page Worksheet 10A - Total Resistance Network - Solutions and Commentary
Page Worksheet 10B - Total Resistance Network - Solutions and Commentary
Page Worksheet 10C - Total Resistance Network - Solutions and Commentary
Page Worksheet 10D - Total Resistance Network - Solutions and Commentary
Page Worksheet 11A - Total Resistance Network Calcs - Harder - Solutions and Commentary
Page Worksheet 11B - Total Resistance Network Calcs - Harder - Solutions and Commentary
Page Worksheet 15A - Basic Series-Parallel Calculations - Solutions and Commentary
Page Worksheet 15B - Basic Series-Parallel Calculations - Solutions and Commentary
Page Worksheet 16A - Harder Series-Parallel calculations - Solutions and Commentary
Page Worksheet 16C - Harder Series-Parallel calculations - Solutions and Commentary
Page Worksheet 16D - Harder Series-Parallel calculations - Solutions and Commentary
Page Worksheet 16E - Harder Series-Parallel calculations - Solutions and Commentary
Page Book A: Assignment - Solutions and Commentary
Page Book C: BEDMAS Assignment - Solutions and Commentary
Page Book C: Fractions Assignment - Solutions and Commentary
Page Book C: Percentages Assignment - Solutions and Commentary
Page Book C: SI Units Quiz - Solutions and Commentary
Page Book C: Engineering units worksheet - Solutions and Commentary
Page Book C: Engineering multiples & sub-multiples worksheet 1 - Solutions and Commentary
Page Book C: Engineering multiples & sub-multiples worksheet 2 - Solutions and Commentary
Page Book C: Area and Volume homework worksheet - Solutions and Commentary
Page Book C: Pythagoras worksheet 1 - Solutions and Commentary
Page Book C: Pythagoras worksheet 2 - Solutions and Commentary
Page Book C: Pythagoras worksheet 3 - Solutions and Commentary
Page Book C: SOHCAHTOA Worksheet 1 - Solutions and Commentary
Page Book C: SOHCAHTOA Worksheet 2 - Solutions and Commentary
Page Book C: Transposition Worksheet 1 - Solutions and Commentary
Part 101: Generating an EMF File Book 101: Generating an EMF Resource
Page Part 101: Generating an EMF Assignment - Answers and Commentary
Part 102: Conductors and Insulators File Book 102: Conductors and Insulators

This book covers conductors and insulators.

File Conductors and Insulators - Slides

Some slides on conductors and insulators.

Page Part 102: Conductors and Insulators Assignment - Answers and Commentary
Part 103-108: Resistors and Resistance File Book 103-108: Resistors Workbook
File Book 103-108: Resistors Information Book
File Resistors and Resistance - Slides

Resistors and Resistance - Slides

URL Resistor Guide Website

This is quite a good online resource about the basics of resistors.

Page Part 103-108: Resistors and Resistance Assignment 1 - Answers with Commentary
Page Part 103-108: Resistors and Resistance Assignment 2 - Answers with Commentary
Page Part 103-108: Resistors and Resistance Worksheet 22A - Answers with Commentary
Page Part 103-108: Resistors and Resistance Colour Codes Assignment - Answers with Commentary
Page Part 103-108: Resistors and Resistance Worksheet 18A - Answers with Commentary
Page Part 103-108: Resistors and Resistance Worksheet 18B - Answers with Commentary
Part 104: Electrochemistry File 101a EMF production 2020 notes
File Electrochemistry - Slides
Book "B": Power and Energy File Book B - Power and Energy Resource
File Power and Energy Presentation Slides
Page Energy Calculations for Water Heating
URL Three-Heat Demonstration Video

This video is a good demonstration of a three-heat switch setup. It is similar to the three heat setup you will be asked to construct in the practical classes. There are also assignment questions on it.

Please note that some aspects, such as terminal connections may vary, but the principle is the same.

Page Book "B": Worksheet 2: Power Formulae II Assignment - Answers and Commentary
Page Book "B": Worksheet 2: Power Formulae III Assignment - Answers and Commentary
Page Book "B": Power, Energy and Running Costs I - Answers and Commentary
Page Book "B": Power, Energy and Running Costs II - Answers and Commentary
Page Book "B": Worksheet 6: Efficiency and Horsepower Assignment - Answers and Commentary
Page Book "B": Worksheet 7: Water Heating Calculations - Answers and Commentary
Books "D" and "E": Mechanics File Book D: Mechanics Part 1
File Book E: Mechanics Part 2
Page Scalars and Vectors

Scalars and Vectors

Page Newton's Laws of Motion
Page Levers
Page Lever Calculations
Page Book E: Mechanics Part 2 Assignment - Answers with Commentary
File 20200615 Mechanics Part 1 Slides 01-48

This presentation was delivered on 17 June 2020. I will fully cover slides 42 onwards in subsequent lessons.

The most relevant slides for the Summative Test 1 are slides 31 through 33, about the crane lifting a mass.

See also Question 23 in the Summative Test 1 practise test.

Electromagnetism Book Electromagnetism Resource


File 211-216 2019 magnetism workbook
File 211-216 Generation of EMF using Single Loop Alternator
File 211-216 Magnetism Notes (Chris Meehan)
Part 219: Test Meters (Unit Standard 750) File 219 Test Meters Learning Resource and Assignment
Part 319-320: Isolation, Testing and Commissioning File 319-320 2019 15852 and 29468 isolation learning resource
File 319-320 2019 isolation workbook
Parts 430-431: Flexible Cord Selection File 430 2019 student notes and workbook for Flexible Cords unit 29469
File 431 2019 flex calculations booklet 29469
URL John Ward - Cable Overload Demonstration

This video is a demonstration of overloading a 1 mm² twin and earth cable with various currents beyond its rating.

The author is based in the UK, but the cable is otherwise similar to cables used in New Zealand.

File Nexans 2019 Cable Catalogue

The Nexans/Olex Cables 2019 cable catalogue.

This catalogue may also be downloaded from Nexans's own website.

NOTE: This catalogue is being used as an example of a cable catalogue, and not as a commercial endorsement of Nexans and Olex. The behaviour of other brands of cables should be similar.

This catalogue has a range of information from AS/NZS 3008 about cable selection, voltage drop, and short circuit current withstand.

At low currents (<100 A), the cable rating is generally defined by the protective device rating.

At higher currents, the protective device can be programmed to accommodate the cable capacity.

In general, for most low current jobs the "rule of thumb" section C3 in the Wiring Rules may be used.

I would advise that for any household wiring, that the "bulk thermal insulation, partially surrounded" rating is used. This covers wiring in contact with the surface of thermal insulation, as well as cables between thermal insulation, and a non thermally insulating surface (e.g. cables clipped to wood and in contact with thermal insulation).

For TPS, the most relevant pages are pages 44-45. The ratings for "surface clipped" (the right set of columns) mostly corresponds to "in air" ratings in section C3. Note that the rating may vary depending on the interpretation of AS/NZS 3008, and the exact construction details of the cable of interest.

File AS/NZS 3000:2007 Section C3 (Protective Device Sizing for Cables) Extract

Sections C3 provide "simplified" selections of protective device ratings for a given cable size in a given range of situations, and calculation of voltage drop.

As discussed above, all cables installed in domestic housing should be treated as "bulk thermal insulation - partially surrounded".

The ratings here are more conservative than those in AS/NZS3008, in the sense that the protective device rating is the limiting factor on cable current capacity rather than the cable itself.

The voltage drop may be slightly over estimated. This is not a problem if the simplified calculation is below any target voltage drop. Bear in mind that in many cases a calculated result that is slightly over the allowed design value is ok if the full conditions of diversity and maximum demand are taken into account.

Part 327: Responsibilities and Limitations of Registered Electrical Workers File Part 327: Responsibilities and Limitations of Registered Electrical Workers Resource
URL Electrical Workers Registration Board
URL EWRB: Training, qualifications and requirements
URL EWRB: Limits of Work
URL EWRB: Limited Certificates or Provisional Licences
URL EWRB: Certificates for Electrical Work
File Electrical Safety Regulations 2010
Parts 324-325: Safe Working Practices File 324-325: Safe Working Practices Handout
File Electrical Safety Regulations 2010
Folder Assignment B: Resources for Accident Reporting Form
Part 328: Electricity Act, Regulations, Standards AS/NZS3000, 3760, and Electrical Codes of Practice File Part 328: Electricity Act, Regulations, Standards AS/NZS3000, 3760, and Electrical Codes of Practice Resource
File Electricity Safety Regulations 2010
File Electricity Act 1992
URL https://worksafe.govt.nz/laws-and-regulations/standards/electricity-standards-and-codes-of-practice/
URL New Zealand Electrical Code of Practice 50 (ECP 50)

ECP 50 gives information about the repair and maintenance of domestic appliances by the appliances owner. However, it still contains plenty of useful information for electricians.

URL New Zealand Electrical Code of Practice 51 (ECP 51)

ECP 51 gives information about the repair and maintenance of domestic wiring installations by the home owner. However, it still contains plenty of useful information for electricians.

Learner Support URL Student Guide
URL ICT Services For Students
URL Turnitin Student Guides