1.
Select a mounting location that will provide suitable strength and
rigidity for supporting the panel board and all contained wiring.
Figure 1 shows the mounting dimensions. Approximate shipping
weight of panel board fully loaded with breakers is 225 lbs.
A mechanical lifting means is provided.
2. Position enclosure on surface with mounting straps on the upper
mounting bolts. While continuing to support the enclosure in
position, install the bottom two bolts. Tighten all four mounting
bolts securely in place.
3. Remove the cover bolts of the terminal box and swing open
cover on its hinges.
Note
: cover is provided with lift-off style
hinges for convenience.
NOTE: Do not open cover of the circuit breaker enclosure. It is not
necessary nor recommended to remove the cover during panel
board installation. If it becomes necessary, see "Removing and
Reinstalling Panel board Cover". Standard units are factory sealed
and do not require any disassembly for installation of panel board.
4.
With panel board securely fastened to the mounting surface,
attach conduit system. Tapped conduit openings are provided
for main circuit and branch circuits in the terminal box as shown
in Figure 1. To reduce the risks from hazardous atmospheres in
Division 1, and comply with national codes, all conduit runs
must have a sealing fitting connected within 18 inches of the
enclosure. Use explosionproof Crouse-Hinds type RE reducers
for conduit smaller than tapped opening.
For main feed conduit entries in bottom of terminal enclosure
(
Alternate option
) install approved sealing fittings within 18 inches
of the enclosure as required by Section 501-5 and/or 502-5 of the
National Electrical Code plus any other applicable codes.
Hazardous location information specifying class and group listing is
marked on the nameplate of the panel board.
5. After enclosure is positioned and secured in its permanent
location, pull wires into panel board terminal box making sure
that they are long enough to make the required connections.
Make connections per Figure 2 of either single or three phase
circuits.
For Ground Fault Interruption (GFI) or Electrical Protection
Device (EPD) branch circuits, make connections using typical
wiring diagrams per Figure 2.
Terminal Housing
Conduit
≥
2"
Conduit < 2"
Cl. 1 Div. 1, Grp C&D
Within 18"
Within 18"
Cl. 1 Div. 1, Grp B,C&D
Within 18"
Within 18"
Cl. 1 Div. 2
Not required
Not required
CAUTION
To prevent external fire or explosion, external conduit sealing
fittings are required on all conduit entrances (within 18" of the
enclosure) for enclosures when used in Class I, Group B
hazardous areas. Use Crouse-Hinds type EYS seals. For
other sealing requirements, consult the National Electrical
Code
®
or Canadian Electrical Code.
Sealing fittings must be installed in accordance with the
NEC/CEC and properly poured. See instructions supplied
with sealing fittings. NOTE: Select nipple lengths sufficient to
permit sealing fittings and unions to clear the flange.
• Hazardous location information specifying Class and Group
listing is marked on the nameplate of each panel board.
• No conduit entries are to be added in the field.
All unused conduit openings must be plugged with
explosionproof plugs. Plugs must be Crouse-Hinds type PLG,
and engage a minimum of five full threads.
CAUTION
To prevent external fire or explosion, DO NOT connect to a
supply circuit capable of delivering more than 10,000 RMS
symmetrical amperes. DO NOT install equipment which will
produce external surface temperatures exceeding the ignition
temperature of the flammable or combustible materials which
may surround this enclosure. DO NOT install arcing
components or high temperature producing components such
as relays, switches or transformers in the terminal enclosure.
Circuit interrupting devices such as circuit breakers which
may be installed in the enclosure may fail electrically or
mechanically unless they have been investigated and found
suitable for operation in the hazardous location involved.
WARNING
To avoid dangerous overheating and fire, do not use aluminum
wiring. Use copper wiring only. Use 60ºC or 75ºC conductors.
LP1 / LP2 - Panel board Sealing Requirements
IF 1433 • 04/03
Copyright © 2003, Cooper Industries, Inc.
Page 2
CAUTION
The steel plate provided for lifting the enclosure during installation,
is designed to accept a maximum 2 ton hook.
WARNING
To maintain the integrity of the enclosure, do NOT damage or
scratch the flange surface.
WARNING
To provide protection against fire or shock hazard, the electrical
power must be OFF before and during installation and
maintenance.
