SMA SC 500HE-US Installation - Manual (Page 67)

SMA America, LLC 8 Electrical Connection
Installation Manual SC500HEUS-IA-US_en-14 67
8.7.3 Connecting AC cables to busbars
Connecting AC cables to busbars with screw terminals
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High voltages are present in the live components of the low voltage grid.
Death resulting from burning and electric shock.
• Pay close attention to all safety precaution measures regarding the low-voltage grid.
• Switch off the AC and DC circuit breaker and secure it against accidental switching on.
• Ensure that no voltage is present.
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Danger of fire caused by improper connection to the power distribution grid.
• To reduce the risk of fire, do not connect to an AC load center (circuit breaker panel) having
multi-wire branch circuits connected.
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Danger of fire caused by different length of AC cables
Danger of fire.
• Different cable lengths within one phase result in overheating of the shortest cable.
• Connect all AC cables with the same length per phase.
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