External Connection
4.1.6 Connection Terminals
Terminals – 480V
Terminal | Input | Battery | Output | PE | System earth |
Type | stud size | stud size | stud size | stud size | stud size |
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240kW | M12 | M12 | M12 | M10 | M12 |
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320kW | M12 | M12 | M12 | M10 | M12 |
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The terminals for the control & alarm cables are screw clamps for cable size AWG18 to AWG14. All other terminals are stud terminals.
4.1.7 Torque Specifications
Stud size
M6
M8
M10
M12
Torque
66/7.5
133/15
266/30
443/50
4.1.8 Grounding
4.1.8.1 System Grounding
If no UPS neutral inputs are connected to a grounded service neutral conductor according to local NEC code reguirements, provisions must be made as follows:
a)Bonding jumper must be mounted between output terminals X005:N and X005:E
b)Output terminal X500:E, marked “Grounding electrode terminal”, must be connected by grounding electrode conductor to a local grounding electrode according to NEC
4.1.8.2 Equipment Grounding
Terminals marked 
intended for equipment grounding.
Provisions must be made as follows:
Input equipment ground terminal(s) must be connected to grounding electrode(s) provided for the service entrance(s)
22 | Installation Guide APC Silcon |