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PEPE L1L1 L2L2 L3– ––
IT/TT network
Wiring
IT and TT grid systems are mostly used in Norway and
Albania, but it can also be found in Belgium, France and
Spain. These systems have no neutral connector and use
only 4 conductors. Therefore they can only provide 230 V
(across the phases).
NOTICE! Depending on the time of installation and national
standards, the colours of the cables can vary from the
illustration below. Therefore, please make sure that the
conductors are correctly terminated before applying power.
IT/TT 3-phase
IT/TT 1-phase
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