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11
IO-70065
01/2020
Items included in the package consis of the following:
• 1 Model 335 Surge Protective Device
• Data Sheet
• User’s Maual (this docuemnt)
If the Flush Mount Kit (Part #XMFMKIT) was ordered, additional parts are
supplied as follows:
• 1 Flush Mount Plate
• 4 Pan-head Screws
ASCO 335 Surge Protective Device (SPD)
Wiring
Parts List
Follow steps 1 through 6 to make wiring connections:
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 measure
-
ments to the Line Voltage (L-N) on the product label.
3. Identify proper location for the SPD. Locate as close as possible to
the mains of the panel being surge-limited so the wires are as short as
possible. Mount unit securely.
Note:
The SPD must be installed in an accessible location (not within
walls unless surface mounted with the ASCO KITFMXF flush mount
kit).
4. Install in accordance with national and local electrical codes and match
the branch circuit Overcurrent Protection Device (OCPD) to the wire
size.
5. Twist conductors 1/2 turn or more for every twelve inches of length.
6. Do not loop or coil wires. Be sure to maintain adequate wire bending
space per NEC.
7. Replace the barrier, cover/door and/or trim to the equipment.
8. Equipment may be re-energized after all the above steps are complete.
Specifications
Wiring Connections
Voltage Rating
120/240V Split Phase - 1Ø, 3W+Grnd
Audible Noise
None
Service Clearance
36 in (94.1 cm) in front of the unit
Installation Type
Chase Nipple
Wire Length vs.
Response Time and
Let-Through Voltage
1 ft (31.7 cm) of wire = 1 nanosecond. 160
volts per foot (6kV,3kA, 8/20 microseconds) are
added to the clamp voltage.
Wire Size & Installation
Torque
Wire Size = #10 AWG, torque to 18 in-lbs.
Circuit Breaker
Connection
30 Amp
System Grounding
Per IEEE STD 142-1991. For sensitive
electronics/computer systems, the
recommended ground impedance is 25 ohms or
less.
