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Chapter 4 4 4 4 Electrical Installation: Wiring

Chapter

Electrical Installation: Wiring

Electrical Installation: Wiring and

Electrical Installation: Wiring

DO NOT do any change or adjustment on the cable of Junction Box.

DO NOT disconnect cable by yourself!

IMPORTANT

The cable must not be bent or crushed on the direct exit of the cable screw joint. A minimum

bending radius r≥4x (static steady), r≥5x (dynamic) cable diameter must be maintained. The

cable must be routed in a way that tensile stress on the conductor or connection(s) is

prevented.

Pay attention to the following when wiring:

1. 1. 1. 1.

Correct wiring scheme

Check that the wiring is correct before commissioning the system. If the measured open

circuit voltage differs from the specifications, then there is a wiring fault. Ensure that the

polarity is correct.

2. 2. 2. 2.

Correct DC plug connec

Correct DC plug connection method

Make connections only in dry conditions. Ensure that connections are secure and tight.

3. 3. 3. 3.

Use correctly rated materials

Use PV rated solar cable for wiring and suitable connectors only. Ensure that they are in

perfect electrical and mechanical condition. Use only single wire cables. Select a suitable

conductor diameter to minimize voltage drop.

2013/7/25

Figure 4 4 4 4 Minimum bending radius of cable

Figure

tion method

and Grou

and

Grounding

Grou

nding