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Installation
operation and installation manual
zappi
39
Wiring
The main terminals are designed to work with wires with a
diameter up to 16mm
2
Insert the mains cable through the installed cable gland (if not
already done so). Strip back outer sheath ensuring all cables reach the terminal
blocks (leaving a little excess). Strip back all coloured cables approx. 18mm.
If using hard wired CT clamps now is the time to insert these too (we recommend a
specialist cable gland that can accommodate multiple cables whilst still maintaining
IP integrity, or two separate cable glands to ensure
zappi
remains sealed).
To insert the wires into the terminal blocks a suitable sized screwdriver should be
inserted into the slot. This opens the spring terminal allowing the wire to be gently
pushed into the terminal. Make sure that the wire is pushed fully home and then
remove screwdriver, checking that the wire is secure in the terminal.
Single Phase Wiring
For single-phase installations, without the need for
hardwiring an external CT, please follow the above
diagram
Earth = Green / Yellow cable
Neutral = Blue cable
Live (L1) = Brown cable
For single phase installations, where 1 or more
external/additional CTs are required, please follow
the above diagram to connect the CTs. Use the
extra CT terminals in the same way if required.
Positive (+) = Red
Negative (-) = Black
For more details on CT installation and connection
see CT Sensor Installation (page 47)