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Installation manual 10679
Effective October 2017
BSPA Type 1 and Type 2 surge protective devices
Eaton.com/bussmannseries
Before installing a BSPA unit:
1. Verify that the area is clear of any dirt, debris or clutter that may
hamper the installation process.
2. Verify that there is enough space to install the BSPA. See Figures
4 and 5 for dimensions.
3. Confirm that the system voltage and wiring configuration is the
same as the BSPA you are installing. See Section 7
. Wiring
Diagrams
.
4. Check the facility grounding system. All grounding, bonding and
earthing must meet the NEC, CEC and any other national, state
and local electrical codes.
5. An insulated grounding conductor that is identical in size
and insulation material and thickness to the grounded and
ungrounded circuit supply conductors, except that it is green with
or without one or more yellow stripes, is to be installed as part of
the circuit that supplies the BSPA unit.
6. Refer to Table 250-122 of the NEC to select the appropriate
grounding conductor size. This grounding conductor is to be
grounded to earth at the service equipment or other acceptable
building earth ground such as the building frame in the case of a
high steel-frame structure.
6.1 Mounting
ALL CONNECTIONS IN THIS PROCEDURE MUST BE MADE IN
ACCORDANCE WITH NEC, CEC, STATE, COUNTY AND LOCAL
CODES FOR ALL SAFETY RATINGS.
TO ENSURE MAXIMUM EFFECTIVENESS AND PROVIDE THE
BEST POSSIBLE PROTECTION FOR SENSITIVE ELECTRICAL
EQUIPMENT, MOUNT IN SUCH A WAY AS TO MINIMIZE THE
CABLE LENGTH AND ELIMINATE ANY SHARP BENDS IN THE
WIRING CONDUIT. SEE FIGURE 2.
WHEN USING CONDUIT, AVOID USING 90° ELBOWS AND KEEP
THE CONDUIT RUN AS SHORT AND STRAIGHT AS POSSIBLE.
SEE FIGURE 3.
6.2 Panel mounted
The preferred mounting of the BSPA is directly to the electrical
panel with its integrated male connector hub and the supplied 3/4”
trade-size conduit locknut. Insert the wires through the panel wall
being careful not to damage the wire insulation. Install the provided
locknut and tighten to 20.3 lb-in (2.3 N•m). If the installation requires
the NEMA 4X rating, install the supplied mounting feet to the
enclosure and securely mount the unit using #8 flat head screws
(not included). Be sure to use the appropriate gasket/liquid-tight
fitting (not included) between the unit and the panel wall. Liquid-tight
conduit torque should not exceed 200 lb-in (22.5 N•m).
Figure 2. Preferred installation.
6.3 Panel mounted with conduit
In situations where the preferred, direct mounting cannot be
employed, optional conduit mounting can be utilized. In this case
mount the BSPA as close as possible to the electrical panel using
3/4” trade-size conduit, 3/4” trade-size coupling, 3/4” trade-size
connector and the supplied 3/4” trade-size conduit locknut.
Note
: To maximize the BSPA’s performance, 10 AWG wire length
should be less than 14” (35 cm) twisted and bound together.
Attach the conduit coupling, conduit and connector. Then insert the
wires through the conduit and through the panel wall, being careful
not to damage the wire insulation. Install the provided locknut and
tighten to 20.3 lb-in (2.3 N•m). If mounting requires the NEMA
4X rating, install the provided four mounting feet to the enclosure
and be sure to use the appropriate gasket/liquid-tight fittings (not
included) between the unit and the panel wall. Liquid-tight conduit
torque should not exceed 200 lb-in (22.5 N•m).
Figure 3. Alternate installation.
When mounting the BSPA outdoors, use the supplied mounting feet,
weatherproof conduit and fittings to maintain the enclosure’s NEMA
4X rating.
