Owner’s Manual
BWC EXCEL 10 Turbine
Page 18
5. AC Output Connection
The AC output is single phase and not bonded to ground.
Connect the two single phase 240VAC or 208VAC wires from the distribution
panel to the dual fuse block located on the lower left side of the enclosure.
Tightening torque,
allowable wire size,
and type, for the
Field-Wiring
Terminals:
6 AWG to a maximum
of 1/0 AWG for
Copper Conductors
Only
4 AWG to a maximum
of 1/0 AWG for
Aluminum Or Copper-
Clad Aluminum
Conductors Only
Wire rated 90°C
minimum
100 lbf-in tightening torque maximum
6. AC Input Connection (Turbine)
Connect the three phase turbine wires to the terminal block located on the lower
right side of the enclosure.
The inverter’s wind turbine input must be connected to a 3-phase “delta” or “wye”
connection with the neutral not connected to earth ground (left floating).
The inverter must be provided with 3, UL listed fuses rated, 400 VAC minimum,
50 Amp maximum for proper protection from the wind turbine input to the unit as
well as an appropriate UL listed fuse holder to accommodate the fuses.
Tightening torque, allowable wire size, and type, for the Field-Wiring Terminals:
50 lbf-in tightening torque
8 AWG - to a maximum of 2 AWG for Copper Conductors Only
Wire rated 90°C minimum.
7. Earth Ground Connection
Earth ground is to be connected to the two terminals provided inside the
enclosure indicated by the earth ground equipment marking.
Allowable wire size range is 8 AWG
– 4 AWG.
50 lbf-in tightening torque
The inverter’s earth ground connections available on both the input and output
terminals must be bonded directly to the service entrance’s earth ground which in
turn is bonded to neutral. With a second bond, the inverter’s earth ground
