Eaton PV240 - Page 53

Eaton Corporation Page 53 Ver 1.1
C) Use a multi-meter to measure the AC voltage from the combiner box for
AC utility. It is important to confirm the AC voltage that being used is
matching with the correct configuration of utility configuration dip switch
used.
D) Refer to the information from the table 310.16 in the National Electrical
Code (NEC) in order to select the proper size of AC cables for the
Position 1 pole / Position 2 pole / Position 3 pole.
The following table is shown the information of cables size and tightening
torque that should be used in the position (1) pole / position (2) pole /
position (3) pole in the AC terminal when a 208V grid system applied
with the PV inverter:
Model
Terminal block
PV240
(PV238)
PV250
PV260
PV270
Terminal block
labeled with (1),
(2), (3)
Admissible
conductor size
10 AWG 8 AWG 6 AWG
90
o
C / 194
o
F, Copper
Torque 15.6 lbf-in (18 Kgf-cm) 33.1 lbf-in (38.1 Kgf-cm)
Terminal block
labeled with (G)
Admissible
conductor size
10AWG
Torque 15.6 lbf-in (18 Kgf-cm)
33.1 lbf-in (38.1 Kgf-cm)
IMPORTANT
The selection for the AC cable size and required torques for the
Position 1 / Position 2 / Position 3 were referring with the table
310.16 from the National Electrical Code (NEC).
E)
E)
E) Connect the AC cables with PV inverter by inserting them through the
conduits into wiring box as figure 7.2.2.2 shown:
Figure 7.2.2.2: Insert the AC cables through conduit