Ac Wiring - Victron energy MultiPlus-II Manual

Compatible current transformers:
• CRT12xxxx Current Transformer 100A:50mA for MultiPlus-II Wire-end (available in 1.5 and
20m cable length)
• CTR140050100 Current Transformer 400A:50mA for MultiPlus-II (10m) Wire-end (the
current sensor wiring can be extended up to 20m using 0.75mm
• CRT11xxxx Current Transformer 100A:50mA for MultiPlus-II Jack connector (for older
MultiPlus-II units, available in 1.5 or 20m length)
For further details:
multiplus-ii.

AC Wiring

In this application, inverter current flows through the AC outputs of the MultiPlus-II units, so the
external transfer contactor wiring diameter must be appropriately sized and symmetrical.
Protect the AC output wiring with a circuit breaker suitable for the expected load and wire gauge.
Fuse both line and neutral wiring.
The wiring to the AC inputs of the phase masters acts as measuring/sense wires. Since the Multi
firmware will not drive its internal back-feed relay, these wires can be relatively thin, such as
1.5mm². Fuse the line and neutral wires using 6A four-pole circuit breaker.
Leave the AC inputs on slave units unconnected.
https://www.victronenergy.com/meters-and-sensors/current-transformer-for-
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