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C) Connecting DC cables of PV strings to the DC terminal by taking the
following steps:
Figure 7.1.4: DC terminal for PV inverter
i.
Select the proper rating for the string fuse by following the
calculation that had been mentioned in section G. DC Protection of
chapter 6.2
ii. Install the DC fuse in its assigned location
iii. Connecting DC positive polarity cable to the DC positive pole
terminal in the wiring box
iv. Tighten the DC positive polarity cable in the DC terminal by a
screwdriver with the required torque value
v. Connecting DC negative polarity cable to the DC negative pole
terminal in the wiring box
vi. Tighten the DC negative polarity cable in the DC terminal by a
screwdriver with the required torque value
vii. Double confirm the DC cable from the DC terminal in order to
ensure all the DC cables have been tighten firmly in proper location
as described in figure 7.1.5:
Figure 7.1.5: DC Input Terminal
IMPORTANT
The size selection of DC cables should be referred to the cable size
requirement in the National Electrical Code(NEC), ANSI/NFPA 70
that
can be used with the PV inverter, please beware of this.
DC +
DC -
