Eaton SPC Max Series Installation Instructions Manual page 4

Instruction Booklet IB158002EN
Effective September 2023
Installation procedures
1. Before mounting the SPD Max Series device, ensure that the
mounting surface is sufficient to support the weight of the SPD .
See Specifications for weight . The SPD should be mounted
as close as possible to the electrical cabinet and as close as
possible to the wiring connection point within the electrical
cabinet . This will ensure a minimum wire length and maximum
SPD performance . Preferred entry of the incoming power is
on the hinge side of the enclosure . This location offers the
best voltage protection ratings . Top and bottom entry is also
available . If the user chooses to wire the entry cable through
the top of the enclosure, the internally mounted terminal block
for the neutral (if equipped) and ground connections must
be moved to the bottom of the enclosure . See Installation
procedures for top entry on page 5 . The three possible
power entry locations are identified on the enclosure with
a dimple located on the top, bottom, and hinge side of the
enclosure housing (see Figure 58) .
Table 2. Suggested entry cable and conduit hub sizes
Power entry Maximum–minimum
into enclosure entry cable AWG
Top 1/0–10 AWG
Hinge side 1/0–10 AWG
Bottom 1/0–10 AWG
2. Lay out the four enclosure mounting holes using the enclosure
dimensions provided in Figure 58 . Drill the appropriate holes
per the product dimensions .
3. Determine the correct metal conduit for phase wires using
Table 2 and install onto the SPD enclosure. If using the Form C
contacts, route Form C wires through a separate maximum
¾-inch trade size hub and conduit .
Figure 2. Typical Form C wiring connections
4
EATON www.eaton.com
Maximum
trade size hub
1½ inches
2 inches
1½ inches
a
SPC Max Series surge protective device
4. Determine the hole location on the receiving electrical
enclosure and either remove the knock-out provided or drill
the appropriate size hole at that location .
5. Select the correct wiring diagram for the SPD Max you are
installing . Refer to the wiring diagrams in Figure 50–Figure 57 .
6. Determine the wire gauge and length required to make the SPD
phase connections and cut the wires to the appropriate length .
(To maximize SPD performance, wire length should be as short
as possible .) Route the phase wires through the metal conduit .
N ote: Wires should not exceed the allowable bend radius according to NEC
and CEC during installation . Route all phase, ground, and neutral (where
applicable) wires through conduit . Route Form C wires (where applicable)
through a separate maximum ¾-inch trade size hub and conduit .
7. Determine the wire length for the ground and neutral (where
applicable) wires and cut these wires as needed . Again, keep
these wires as short as possible to maximize SPD performance
and don't exceed the bend radius of the wire during installation .
8. Standard with surge counter and Power Xpert
provide wiring for Form C relay contacts . This connection can be
used for remote monitoring of the SPD . The Form C contacts are
rated at 150 Vac at 0 .46 A, 30 Vdc at 1 A .
N ote: When an SPD Max contains two SPD modules, the user can connect
their Form C wires to either SPD1 or SPD2 . There is no need to wire to both
units as they are wired together through the SPD Status board and two
ribbon cables (see Figure 2) . Follow all national, state, and local electrical
codes when making these connections .
a Utilization of Form C contacts is optional. Connection is not mandatory for the operation of the SPD.
Installation instructions for
a
devices also
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