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DESCRIPTION
The PolyMatrix nVent RAYCHEM PMKG-JLP is a NEMA 4X rated single
entry power connection kit for Auto-Trace self-regulating heating cables.
Materials for one power connection are included in this kit.
TOOLS REQUIRED
• Screwdriver • Needle-nose pliers
• Wire cutters • Utility knife
• Adjustable pliers • Heat gun or mini-torch
ADDITIONAL MATERIALS REQUIRED
• Pipe strap
• Grommet
(1)
• Terminal block
(2)
: PMK-TB-6AWG
• Glass cloth tape
(3)
– GT-66 Installation temperature above 40°F (4°C)
– GS-54 Installation temperature above -40°F (-40°C)
(1)
May be required, see step 1.
(2)
For loads between 40 and 70 Amps or when using 6 or 8 AWG wiring.
(3)
Required for CSA Class I, II, III Division 2 Certification (see step 12)
This component is an electrical device which must be
installed correctly to ensure proper operation and to
prevent shock or fire. Read these important warnings and
carefully follow all the installation instructions.
• To minimize the danger of fire from sustained
electrical arcing if the heat ing cable is damaged or
mis installed, use a ground fault protection device
(GFPD). Arcing may not be stopped by conven tion al
circuit breakers.
• Component approvals and performance are based on
the use of specified parts only. Do not use substitute
parts or vinyl electrical tape.
• The black heating cable core and fibers are conductive
and can short. They must be properly insulated and
kept dry.
• Damaged bus wires can overheat or short.
Do not break bus wire strands when scoring the
jacket or core.
• Heat damaged components can short. Use a heat gun
or a torch with a soft, yellow, low-heat flame, not a
blue focused flame. Keep the flame moving to avoid
overheating, blistering, or charring the heat-shrinkable
tubes. Avoid heating other components. Replace any
damaged parts.
WARNING: Overheating heat-shrinkable tubes will
produce fumes that may cause irritation. Use adequate
ventilation and avoid charring or burning. Consult MSDS
for further information.
WARNING:
KIT CONTENTS
Item Qty Description
A 1 Junction box with lid
B 1 Base
C 1 Red grommet
1 Blue grommet
D 1 Top (3/4 inch NPS thread)
E 2 Black heat-shrinkable tubes
F 1 Green/yellow heat-shrinkable tube
G 1 Clear yellow heat-shrinkable tube
H 1 Ring gasket
I 1 Locknut
J 1 Terminal block
A
G
C
D
B
F
E
I
J
H
APPROVALS
Class I, Div. 2, Groups A, B, C, D
Class II, Div. 2, Groups F, G
Class III, Div. 2
Class I, Div. 2, Groups B, C, D
Class II, Div. 2, Groups F, G
Class III, Div. 2
Hazardous Locations
PMKG-JLP
Polymatrix Single Entry Power Connection
Kit Installation Instructions
2 | nVent.com
Tape
1 1/2 ft
Centerline
of connection
1
(B)
(C)
(D)
2
• Allow extra heating cable as shown.
• Slide parts onto heating cable.
7 1/2 in
Do Not Cut Braid
3 4
• Lightly score
outer jacket.
• Bend heating cable
to break jacket at
score, then peel off
outer jacket.
• Push braid back
toward outer jacket to
create a pucker.
• At pucker open braid
using screwdriver
.
For base heating cables (no braid) skip to step 7. For braided heating cables only.
5
6 1/2 in
Do Not Cut Bus Wires
6
• Bend heating cable and
work it through opening
in braid.
• Pull braid tight.
• Lightly score
base jacket.
• Peel off base
jacket.
For braided heating cables only.
Base
heating cable
-CT or -CR
heating cable
with braid and
outer jacket
• Identify heating cable type.
• Select correct grommet from chart on right.
Discard unused grommet(s).
Heating Cable Type Grommet
BTV,QTVR, XTV Base BLUE
BTV, QTVR, XTV -CT or -CR RED
KTV BASE N*
KTV -CT P*
LBTV Base H*
LBTV -CT K*
* Order separately
WARNING: Use of the wrong grommet can result in leaks,
cracked components, shock or fire, and will invalidate
approvals and certifications.
Identify Heating Cable Type
nVent.com | 3
Solid core heating cable.
Continue here
Fiber core heating cable.
Continue here
7
• Select heating cable core type
and continue as shown.
1/4 in
8A 8B
• Notch core.
• Twist back and peel
bus wire from core.
• Score core between bus
wires at base jacket.
• Bend and snap core.
• Peel core free from
bus wire.
• Clean bus wires.
• Cut and remove all
fiber strands.
• Score and remove
center spacer.
• Clean bus wires.
Solid core heating cable. Fiber core heating cable.
1 in
(E)
(F) For braid
if present
9
3/8 in
(G)
10
• Slide on
heat-shrinkable tubes.
• Use heat gun or mini
torch with soft yellow
flame to gently heat
tubes until they shrink.
• Center clear yellow
tubing (G) over end
of base jacket.
• Heat tube until it
shrinks and adhesive
flows out ends. While
still hot, pinch between
bus wires and hold for
5 seconds.
• Trim wire ends.
Centerline of
connection
13
(I)
(H)
14
• Fasten base to pipe with strap.
• Loop and tape extra heating cable
to pipe.
• Position ring gasket
onto top.
• Install box with locknut.
(J)
Water tight conduit seal
Ground wire
Braid
Use a conduit drain to
prevent condensation
and water build-up.
15
• Connect bus wires and
braid to terminal block.
• Connect power wires and
ground wire to terminal
block.
• Stow wires in box and
install lid.
2 3/8 in
11
1 in
12
• Apply 3 wraps of glass tape
(RAYCHEM GT-66 or GS-54).
• Seat grommet and position parts so
that 1 in. of heating cable extends
past top of threads.
• Tighten screws.
For CSA Class I,II,III, Division 2 applications only.
nVent.com
©2018 nVent. All nVent marks and logos are owned or licensed by nVent Services GmbH or its aliates. All other trademarks are the property of their respective owners.
nVent reserves the right to change specications without notice.
Raychem-IM-H54060-PMKGJLP-EN-1805 PN 249305
North America
Tel +1.800.545.6258
Fax +1.800.527.5703
Europe, Middle East, Africa
Tel +32.16.213.511
Fax +32.16.213.604
Asia Pacific
Tel +86.21.2412.1688
Fax +86.21.5426.3167
Latin America
Tel +1.713.868.4800
Fax +1.713.868.2333
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