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Fig. 2: Wrong
Sockets controlled by a wall switch
Your Fuse Finder is the easiest way to determine if a wall socket is controlled by a switch.
1. Carry out the unit test and ensure it works.
2. Turn the wall switch OFF.
3. Plug the transmitter into the outlet being tested.
4. Repeat the Unit Test.
5. If the receiver does not beep, that outlet is controlled by the wall switch.
Locating more than one socket/location on the same circuit
1. Plug the transmitter into a socket with the power on and verify that the receiver is working
as explained in the "Unit Test" section.
2. Take the receiver to the other location in question, hold the receiver against the socket
or wiring in the same manner as you would with a fuse. Due to variations in the wiring of
sockets you may need to vary the angle of presentation of the receiver unit.
3. If this socket is on the same circuit as the outlet where the transmitter is plugged in, the
receiver will beep.
CAUTION: Use extreme care when you work around electrical circuits. A severe shock
hazard exists. Your Fuse Finder is not intended to replace good electrical practices, but to
assist you in knowing established wiring layouts.
WARNING
In order to avoid the danger of electrical shock, it is important that proper safety
measures are taken when working with voltages exceeding 30V AC rms, 42V peak or
60V DC.
Cleaning
Disconnect the instrument from all circuits. Moisten a cloth slightly with diluted washing up
liquid and wipe the instrument surface by applying light pressure. Allow a recovery time of
6 hours after cleaning before operating the instrument to ensure it is perfectly dry.
5. Ensure that all fuses/breakers are scanned by
the receiver. Do not assume that the first signal
is the only signal.
(Note: In certain instances an
adjacent fuse may also beep due to the routing of
the wires in the panel. If this occurs or if an area of
the panel is sensitive, remove the panel cover
(observing normal safety precautions) and hold the
Fuse Finder against the wires leading to the fuses.
This should eliminate any crossover signals and
allow unique identification of the fuse).
6. After you have located the right breaker or
fuse, you can turn off the circuit and the receiver
will stop beeping.
7. Check that the red light on the transmitter is off
to confirm you have turned off the correct fuse.
TECHNICAL SPECIFICATION
Transmitter
Voltage rating: 230V
Frequency range: 30 - 70Hz
Switching frequency: Approx. 5Hz
Transmission pulse width: approx. 1.7μS
Transmission pulse amptitude: 20A max.
Temperature range: -10°C to 40°C at max 60% RH
Dimensions: Approx: 65 x 65 x 46mm
Weight: 60g (FD500/T) 65g (FD600/T)
Earth Leakage: Nil
Power supply: From mains
Power consumption: Approx. 1W
Overvoltage category: Cat III/300V
Pollution degree: 2
Protection Class: IP20
Receiver
Tracing depth for fuse assignment: approx. 0 - 10cm, depending on local conditions.
Sensitivity setting: via on/off potentiometer
Temperature range: -10°C to 40°C at max 60% RH
Dimensions: 160 x 55 x 30mm
Weight: approx. 135g (including battery)
Protection class: IP20
Power supply: 9V battery, MN1604/PP3, IEC 6LA61 (alkaline only) (included).
Units are EMC compliant.
There are no user serviceable parts in the transmitter or receiver.
12 months guarantee
Faults in manufacture and materials are fully guaranteed for 12 months from date of invoice
and will be rectified by us free of charge, provided the instrument has not been tampered
with, and is returned to us unopened. Damage due to dropping, abuse or misuse is not
covered by the guarantee. Our service department will promptly quote to repair any faults
that occur outside the guarantee period. Nothing in this leaflet reduces your statutory rights.
Martindale Electric Company Ltd
Metrohm House, Imperial Park, Imperial
Way, Watford, Herts, WD24 4PP, UK
Tel: 01923 441717 Fax: 01923 446900
Website: www.martindale-electric.co.uk
E-mail: sales@martindale-electric.co.uk
This instruction leaflet has been prepared with great care. No liability is accepted for the correctness and the
completeness of the data, illustrations and drawings it contains.
Due to a policy of continuous development, Martindale Electric Company Ltd reserves the right to alter the equipment specification, description and prices outlined
in this publication without prior notice and no part of this publication shall be deemed to be part of any contract for the equipment unless specifically referred to as
an inclusion within such contract. E. & O.E.
© Martindale Electric 2016
REV4
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