Electrical Connection; Safety Precaution - Goodwe ETC Series User Manual

User Manual V1.0-2023-04-30

6 Electrical Connection

6.1 Safety Precaution

• Perform electrical connections in compliance with local laws and regulations. Including
operations, cables, and component specifications.
• Disconnect the DC switch, AC output switch, and battery switch of the inverter to power off
the inverter before any electrical connections. Do not work with power on. Otherwise, an
electric shock may occur.
• Tie the cables of the same type together, and place cables of different types apart. Do not
place the cables entangled or crossed.
• If the tension is too large, the cable may be poorly connected. Reserve a certain length of the
cable before connecting it to the inverter cable port.
• Make sure that the cable conductor is in full contact with the terminal and the cable insulation
part is not crimped with the terminal when crimping the terminal. Otherwise, the inverter
may not be able to work properly, or the connection may be unreliable during working,
which may cause terminal block damage, etc.
• Wear personal protective equipment like safety shoes, safety gloves, and insulating gloves
during electrical connections.
• All electrical connections should be performed by qualified professionals.
• Cable colors in this document are for reference only. The cable specifications shall meet local
laws and regulations.
Cable requirements:
No. Type
PV input cable(MPPT)
1 Battery cable
(BATTERY)
2 Grounding cable (PE)
AC output cable
3 (GRID)
DANGER
NOTICE
Specificatons
Two single-core outdoor copper or aluminum cable for each PV
input cable and battery cable.
GW50K-ETC/GW100K-ETC/GW50K-BTC/GW100K-BTC:
• Conductor cross-sectional area (copper): 35-50mm
• Conductor cross-sectional area (aluminum): ≥50mm
Single-core outdoor copper cable.
GW50K-ETC/GW100K-ETC/GW50K-BTC/GW100K-BTC:
• Conductor cross-sectional area (copper): 35-50mm
• Conductor cross-sectional area (aluminum): ≥50mm
Single-core or multi-core outdoor copper or aluminum cable.
GW50K-ETC/GW50K-BTC:
• Conductor cross-sectional area (copper): 35-50 mm
• Conductor cross-sectional area (aluminum): ≥50mm
GW100K-ETC/GW100K-BTC:
• Conductor cross-sectional area (copper): 50-70 mm
• Conductor cross-sectional area (aluminum): ≥70mm
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