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Installation
3.3 Electrical Installation for DC Cabling
- PV array converts sunlight into electric power with high DC voltage and high DC
current which can cause dangerous electrical shock hazard. Please use an
opaque material to cover the PV array before wiring or cabling.
- Please ensure the correct polarities are connected when DC cabling is applied.
- The risk of electric shock and fire. Only PV modules that are listed with system
voltage under 1000V are permitted for use.
- Please ensures that the DC Switch Turns "OFF" as well as the PV array
is disconnected when DC cabling is applied.
- The PV Array positive or negative leads must not be connected to ground.
3.3.1 DC Cabling Installation for M80U
Please read the following instructions for connecting DC terminals (M80U
• It is important to choose the proper size for DC cable.
• The cross-sectional area for each internal cable is 10~14 AWG.
• It is important to choose the correct fixing screws for the photovoltaic fuseholder.
• Each individual screw with torque 2.3N-m is required.
• 1½" EMTs are used for DC terminals connection as shown in Figure 3-13.
- The screw with torque 2.3N-m is required for fixing the fuse holder.
DANGER : ELECTRICAL HARZARD!!
WARNING !
ATTENTION
ATTENTION
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