Installation and Operation Manual 13
Wiring
Follow steps 1 through 7 to make wiring connections.
1. Turn off all power supplying this equipment before working on or inside
any enclosure containing this equipment.
2. Confirm surge protective device is rated for your system by comparing
voltage measurements to the Line Voltage (L-L, L-N) on the product
label.
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. See Figure 3 for mounting instructions.
NOTE: The surge protective device must be installed in an accessible
location (not within walls).
4. Install in accordance with national and local electrical codes and match
branch circuit Overcurrent Protection Device (OCPD) to the wire size.
5. Twist conductor 1/2 turn or more for every 12 inches of length.
6. Do not loop or coil wires. Be sure to maintain adequate wire bending
space per NEC
®
2008 Article 408.
7. Unless installing a delta product, use on grounded systems only.
NOTE: On a high-leg delta installation, the high-leg of the power system
must be connected to the orange wire of the SPD.
NOTE: Always install the SPD on the LOAD side of the main disconnect.
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.
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.
Table 4: Wiring Diagram Location
1
1
See “Dry Contacts” on page 16 for dry contact wiring.
Wiring for: Figure and Page
Single-phase, 3-wire, grounded
installation
Figure 4 on page 14
Three-phase, 3- or 4-wire,
grounded WYE installation
Figure 5 on page 14
Wiring
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