Victron energy Phoenix Inverter VE.Direct 12 250 Mode D'emploi page 14

For the 800 VA and 1200 VA inverters:
For these inverters the earth wire from the chassis can be either connected to FJ1 (neutral
floating) or to FJ2 (neutral connected to earth/chassis). The labels FJ1 and FJ2 are printed on the
circuit board. The default position is FJ1, i.e. neutral is floating.
Appendix B
Wire size for connecting the inverter chassis to ground
The earth conductor from the earth lug on the chassis to ground should have at least half the
cross-section of the conductors used for the battery connection. The maximum conductor size that
fits the earth lug is 25 mm². Use the table below to find the correct cross-section for the earth
conductor.
Cable cross-section
to battery to protective earth
1.5 mm² ≥ 0.75 mm²
2.5 mm² ≥ 1.5 mm²
4 mm² ≥ 2.5 mm²
6 mm² ≥ 4 mm²
10 mm² ≥ 6 mm²
16 mm² ≥ 10 mm²
25 mm² ≥ 16 mm²
35 mm² 25 mm²
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