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For troubleshooting, call technical assistance at 1-800-237-4567 or [email protected]
12
IO-70064
05/2020
ASCO 460/465/480/485 Surge Protective Device (SPD)
Wiring
The ASCO 460/465/480/485 either comes with terminal lugs, internal or
external rotary disconnect switch.
ASCO 460/465/480/485 SPD:
Follow steps 1 through 9 to make wiring connections to units with either
rotary disconnect switch or terminal block connection:
1.
Turn off all power supplying this equipment before working on or inside
any enclosure containing this equipment.
2.
Confirm SPD 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.
Note: The surge protective device must be installed in an accessible
location as described in the NEC.
4. Install in accordance with national and local electrical codes
for overcurrent protection recommendations and wire ampacity
considerations.
Note: Use on solidly grounded systems unless the SPD model is
designed for installation on ungrounded/HRG systems.
Note: See “Terminals, Wire Size, and Installation Torque” and Table 2
on page 8 for acceptable wire size and installation torque.
5. Twist conductors 1/2 turn or more for every twelve 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 22 for wiring
instructions.
7. For units with Active Surge Monitor, preplan the routing of ethernet
cabling to allow for proper connection to the RJ45 port. Refer to ASCO
document IO-70109.
8. Replace all devices, doors, and covers 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 and the service LED
extinguished.
If you have any questions pertaining to the installation of this device, contact
us at (800) 237-4567 or [email protected]
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
• On a high-leg delta installation, the high-leg of the power system must
be connected to the B phase lug of the SPD.
Failure to follow these instructions will result in death or serious injury.
DANGER
