TESTO 6681 Instruction Manual page 25

Connection note
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For the connection, a double-insulated mains cable
(sheathed cable) with a cross-section of at least 1.5 sq.
mm must be used.
Cable connection (2) may not be routed in a loop within
the tray (1).
It is recommended that you always tie 3 cores to one
another using a cable tie (3).
The insulation of the cable must be fed at least 5 mm (4)
into the tray.
testo 6681
- 1.3 Commissioning 25