Victron energy VBC 12-24-48V Manual page 8

2.2 Mounting
The VBC can be mounted on a standard DIN rail. To ensure the best
readout we recommend that you use the standard supplied cables and
place the controller as close as possible to the batteries.
During prolonged periods of high current consumption, the shunt will
become hot. It is therefore recommended that the shunt be mounted with
the blades oriented vertically to allow optimal air-flow.
2.3 Wiring and jumpers
First connect the wiring as shown in figure 1 below, without the fuse. The
thick lines represent the main current path cables; these should be of a
heavy duty type. After installation, and checking all the connections place
the fuse to power the battery controller.
Connect the Battery Controller to a VE.Net Panel (VPN) or other VE.Net
device using a standard straight Cat5 cable. The total length of Cat5
cables used in a VE.Net network should not exceed 100 m.
Note: The shunt and temperature sensor should be the only wires
connected to the negative terminal of the battery. The negative
connections of all other devices (including chargers) must be made to the
load side of the shunt (system ground). If devices are connected directly
to the negative terminal of the battery the VBC will be unable to measure
their current flow, and will give incorrect readings.
Note: Do not connect any other wires to the shunt measurement output,
as this will affect the accuracy of the readings.
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