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14
Installation and Operation Manual
Wiring
Follow the steps listed below when making wiring connections.
1. Turn off all power supplying this equipment before working on or inside
any enclosure containing this equipment.
2. Confirm the SPD voltage rating and configuration is the same as the
system voltage and power system configuration to which it will be
connected.
3. Identify proper location for surge protective device. Locate as close as
possible to the panel being addressed so the wires are as short as
possible. Mount unit securely.
4. Install in accordance with National Electrical Code
®
(NEC
®
) and local
electrical codes for overcurrent protection recommendations and wire
ampacity considerations.
5. Twist conductors 1/2 turn or more for every 12 inches of length. Do not
loop or coil wires. Be sure to maintain adequate wire bending space per
NEC.
6. If the remote signaling contacts of the diagnostic display panel are to be
used, refer to the section, “Dry Contacts”, on page 18 for wiring
instructions.
7. On a high-leg delta installation, note the high leg connection per wiring
diagram. See Figure 5.
8. Replace all devices, doors, and covers, including the line barrier for the
optional integral disconnect, before turning on power to the equipment. If
the SPD is properly installed and functioning, the green LED indicators
on the display will be lit.
If you have any questions pertaining to the installation of this device, contact the
APC Technical Support at 1-800-800-4272.
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
• Apply appropriate personal protective equipment (PPE) and follow safe
electrical work practices. See NFPA 70E.
• This equipment must only be installed and serviced by qualified
electrical personnel.
• Turn off all power supplying this equipment before working on or inside
equipment.
• Always use a properly rated voltage sensing device to confirm power is off.
• Replace all devices, doors and covers before turning on power to this
equipment.
• This equipment must be effectively grounded per all applicable codes.
Use an equipment-grounding conductor to connect this equipment to
the power system ground.
Failure to follow these instructions will result in death or serious injury.
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
Confirm the SPD voltage rating on the module or nameplate label is the
same as the operating voltage.
Failure to follow these instructions will result in death or serious injury.
NOTE: The surge protective device must be
installed in an accessible location as described
in the NEC
®
.
NOTE: The neutral connection is not present on
3-wire, 3-phase wye ground or 2-wire single-
phase mid-point ground power systems. For
these systems, bond the neutral and ground
lugs together in the SPD. For installing wiring
see Figures 3 through 5.
NOTE: See “Terminals, Wire Size, and
Installation Torque” section for the acceptable
wire size and installation torque on page 10.
NOTE: Always install the SPD on the LOAD
side of the main Overcurrent Protection Device
(OCPD).
Wiring