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JoslyN
JsP
iNsTAllATioN, oPerATioN AND MAiNTeNANce MANuAl
®
TM
Upstream Overcurrent
Protection Device
Mounting
Indoor vs. Outdoor Installations
Conduit Openings
The JsP is a Type 1 sPD which is suitable for use in both Type 1 and Type
2 sPD applications . The JsP is a one-port sPD and is to be connected in
parallel with the electrical system . it may be connected via a circuit breaker,
molded case switch, fused switch, or connected directly to the bus of the
panelboard or switchboard it is protecting . if direct bus connection is used,
Joslyn
recommends installing the JsP behind a disconnect switch or other
®
disconnecting means for ease of serviceability .
if the sPD is connected to a dedicated ocPD, a 60A breaker is recommended
(30A minimum, 200A maximum) .
Mount the JsP to the building structure using construction methods and
hardware appropriate for your site . install the conduit and pull the conductors
as specified in Table 2 .
NeMA 4 enclosures are suitable for indoor or outdoor use . NeMA 4X (stainless
steel) enclosures are suitable for corrosive environments as well . For direct
sunlight applications, Joslyn suggests shading the monitoring components .
All conduits and fittings must be rated and properly installed so that the final
installation maintains the NeMA rating .
if desired, punch holes at this time for the conduit or nipple or wait until the
JsP is mounted to the building structure . Punch holes only in the designated
areas as shown in the following illustration .
CAUTION: Careful consideration must be made when selecting
an area for conduit entry. There are several components inside the
enclosure that may interfere with the conduit entry path, therefore,
ensure the path is clear of all objects before drilling. Damages caused
by installation errors are not covered under the product warranty.
See Figure 6 for conduit openings and enclosure dimensions.
7
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