Megger LT5 Gebrauchsanleitung Seite 21

Set the instrument to its 20 range first and then
attempt a measurement by connecting to a reliable
socket outlet. Do not select the 200 range (2000
range, L T 6). If the instrument fails to perform correctly
with the replacement fuse fitted, this indicates the
presence of a fault internally. The instrument should be
returned to the manufacturer or his agent for repair.
A similar 10 A fuse is fitted into the red prod on the
safety dual test lead and safety earth bond test lead.
To gain access to the fuse simply unscrew the barrel of
the prod at the centre, taking care not to lose the
internal spring.
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