Just wondering how everyone would connect a 120mm2 2C+E cable (Cable 1) to a 16mm2 cable 2C+E(Cable 2). Cable 1 is from the switchroom (upstream CB is 32A) to a remote room (very long run I have been told) and is 120mm2 for volt drop. Both cables are copper. Once Cable 1 enters the remote room, it needs to connect to Cable 2 to power a cabinet, with loads of 16A or less. I was thinking of a junction box with an isolator or something along those lines? How does everyone usually connect cables that are so different in size?
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