Developed by Allan GoodgerMoss Vale TAFE

From Boards originally developed by

Ken PostillUltimo TAFE

Ken’s BoardFaults introduced by

3 x 9 Gangswitches

Contacts oxidise, and as a result a high resistance is introduced into the circuit

Limited number of faults can be introduced into the circuit

Very good at developing fault finding techniques in students in realistic scenario

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Allan’s BoardFaults introduced bySeparate Fault Card

Plugged into a socket

All circuit conductors from every circuit can be modified

All conductors are cut at this set of sockets

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Board Contains

Power Circuit

Mixed Circuit

Light Circuit

Hot Water & RangeCircuit

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Hot Water&

Range Circuit

Circuit to load is as per all other circuits

Terminates with flying leads

Load characteristics can be modified by the fault card

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Fault Socket

B&R Enclosure

PJ221507

2 x 3mm groves are routered

into the box lid

Socket PCB is inserted into

slots from the back of the lid

Clamped into position by an insulated metal plate

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Fault Socket

B&R EnclosurePJ221507 Lid

Vero BoardJaycar Part No HP 9544

Socket StripsFarnell Part No

9728856

Cardboard acting as insulation

3mm Mild steel with 3/16” threads cut into each corner

3/16” Screws

Installed from the front of the lidNext

Socket Pin-Outs

Range

Load

Spare

Range

HW

S

Light

Pow

er 2

Pow

er 1

Pins17-19

Pin16

Pins13-15

Pins10-12

Pins7-9

Pins4-6

Pins 1-3

From Switchboard

From LoadsH

WS

Load

Range

HW

S

Light

Pow

er 2

Pow

er 1

Pin16-18

Pins13-15

Pins10-12

Pins7-9

Pins4-6

Pins 1-3

Only Half of the socket is used

This allows the fault card to be spun around and a second set of

faults can be introduced

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Fault CardFault card installed

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With Fault Pin 1

Fault card No

See paperwork

Fault CardFault card installed

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Without Fault

Fault CardSide View

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Back View

Header pinsFarnell Part No 9729038

CB EnclosureLoad side of CBs are easily accessible

By using a 4mm2 (yellow) crimp lug and crimping a 2.6mm Brass welding rod in it

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CB Enclosure

Neutrals are easily removedBy the use of turned plugs

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Cable should be min of 50 strand for flexibility

ImprovementsAdd/incorporate a handle into board

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ImprovementsAdd/incorporate a handle into boardAdd spacers in-between clamping plate and back of

lid

The front of the lid between the screws tends to bow outward

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ImprovementsAdd/incorporate a handle into boardAdd spacers in-between clamping plate and back of

lidPass the socket connecting wires through PCB

before soldering

Solder

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Equipment Requirements

See supplied equipment list

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More Information?

Moss Vale TAFE Kirkham Street Moss ValePhone: 4868 0132 MondaysMobile: 0418 460 220Email: allan.goodger@det.nsw.edu.au

Contact: Allan Goodger

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