Wacker Neuson G 230, Operator'S Manual, Page: 118 / 254

wc_tx003620gb_FM10.fm
118
Mobile Generator
How to Connect Loads
11.2 Best Practices for Balancing Loads
Background Three-phase (3Ø) loads are, by their nature, balanced. It is when single-phase
(1Ø) loads are combined with existing 3Ø loads that an unbalanced condition can
occur. Dedicated 1Ø loads may also be unbalanced if the loads are not equally
distributed between the legs (L1 and L3) of the generator.
The sensing wires of the generator’s voltage regulator are connected to L1 and L3.
Having the loads balanced between L1 and L3 allows the generator to provide
voltage that is more consistent with the voltage needs of the equipment connected
to it.
3Ø Situations When combining 1Ø loads with 3Ø loads (voltage selector switch in 208/240V
position), unbalanced loads can be detected by observing the genset controller
LCD panel. If an unbalanced load condition exists, there will be a significant
difference in both voltage and amperage between the phases.
Observe the amp draw on P1, P2, and P3.
If an unbalanced load is detected, stop the engine and reconnect the loads so that
loads (amp draw) are more equally distributed. This will also help equalize the
voltage for each phase.
When connecting multiple 120V 1Ø loads to the lugs while in 208/240V 3Ø mode,
use L1 as “hot” for the first load (or heaviest load). Use L3 as “hot” for the second
load (or next heaviest load), and use L2 as “hot” for the third load (lightest load). If
additional loads are to be connected, repeat the connection sequence L1, L3, and
then L2.
This procedure continues on the next page.
WARNING
Electric shock hazard. High voltage can cause serious injury or death.
►
Connections must be made by a qualified electrician.
208 P1 24 60
100% 175 60 13
208 P2 24 60
100% 175 60 13
208 P3 24 60
100% 175 60 13
wc_gr011543
3Ø LOW WYE
Observe P1, P2, P3