nvent RAYCHEM JBM-100-L-A Wire Connector and Terminal Blocks Instruction Manual

: June 6, 2024
: nVent RAYCHEM

Table of Contents

nvent RAYCHEM JBM-100-L-A Wire Connector and Terminal Blocks
KIT CONTENTS
DESCRIPTION
TOOLS REQUIRED
ADDITIONAL MATERIALS REQUIRED
OPTIONAL MATERIALS
WARNING & CAUTION
HEATING CABLE TYPES
Splice Wiring
Tee Wiring
Power Connection Wiring
If used as a power connection
If used as a splice or tee connection
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

nvent RAYCHEM JBM-100-L-A Wire Connector and Terminal Blocks

KIT CONTENTS

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Power Connection, Powered Splice, Powered Tee, Dual Power Connection, Splice or Tee with Junction Box and Light

DESCRIPTION

The nVent RAYCHEM JBM-100-L-A is a Type 4X-rated connection kit. It is designed for use with RAYCHEM BTV-CR, BTV-CT, QTVR-CT, XTV-CT, KTV-CT, HTV-CT and VPL-CT industrial parallel heating cables. The kit can be used to connect one, two, or three heating cables to power, to connect two separate heat-trace circuits, or to splice or tee up to three heating cables. The kit includes a plug-in light module that indicates when power is supplied to the heating cable circuit.
Note: For two or more heating cables powered by a single circuit, the length of each heating cable should not exceed the maximum allowable circuit length published in the nVent RAYCHEM self-regulating cables design guide and the total current of all heating cables on the circuit should equal no more than 80% of the circuit breaker current rating.
This kit may be installed at temperatures as low as –40°F (–40°C). For easier installation store above freezing until just before installation.
For technical support call nVent at (800) 545-6258.

TOOLS REQUIRED

Wire cutters
Adjustable pliers
Needle nose pliers
Utility knife
1/4 in or smaller slotted screwdriver
Marking pen
Wire stripper (for VPL-CT)
Large slotted screwdriver
3/8 in hex key (required for splice and tee connections)

ADDITIONAL MATERIALS REQUIRED

Pipe strap
GT-66 or GS-54 glass cloth tape

OPTIONAL MATERIALS

Recommended conduit drain: JB-DRAIN-PLUG-3/4IN P/N 278621-000
Small pipe adapter for 1 in (25 mm) and smaller pipes:
Catalog number JBM-SPA P/N D55673-000

WARNING & CAUTION

This component is an electrical device that must be installed correctly to ensure proper operation and to prevent shock or fire. Read these important warnings and carefully follow all of the installation instructions.

To minimize the danger of fire from sustained electrical arcing if the heating cable is damaged or improperly installed, and to comply with the requirements of nVent, agency certifications, and national electrical codes, ground-fault equipment protection must be used. Arcing may not be stopped by conventional circuit breakers.
The power connection may be powered by more than one circuit. Be sure all power sources are de-energized before opening box.
Component approvals and performance are based on the use of nVent-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.
Keep components and heating cable ends dry before and during installation.
Use only fire-resistant insulation materials, such as fiberglass wrap or flame-retardant foam.

CAUTION

HEALTH HAZARD: Prolonged or repeated contact with the sealant in the core sealer may cause skin irritation. Wash hands thoroughly. Overheating or burning the sealant will produce fumes that may cause polymer fume fever. Avoid contamination of cigarettes or tobacco. Consult MSDS VEN 0058 for further information. CHEMTREC 24-hour emergency telephone: 800-424-9300 Non-emergency health and safety information: 800-545-6258.

HEATING CABLE TYPES

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CAUTION: Health Hazard. Wash hands after contact with sealant. Consult material safety data sheet VEN 0058.

This kit uses spring clamp style terminals. Terminals use a steel spring to clamp the wire to provide improved vibration resistance, reduced maintenance and faster installation.

To connect wires, firmly insert a slotted screwdriver into the square hole ( 1 ) to open the spring. When fully inserted, the screwdriver will lock into place, allowing you to remove your hand and insert the wire into the round hole ( 2 ). Remove the screwdriver to clamp the wire. The wire is held securely against the bus bar for low contact resistance over time without the need to periodically retighten screws.

Refer to wiring diagram, step 18A, 18B, or 18C.
Push screwdriver FIRMLY into square hole.

WIRE Screwdriver slot Wire hole

Insert wire into round hole.
Use green terminal for braid and ground wires.
Remove screwdriver.
Repeat for all connections.

Splice Wiring

Tee Wiring

Power Connection Wiring

WARNING: Shock or fire hazard. When the power connection is energized by two circuits, the L1 and L2 jumpers must be removed to prevent an electrical short. nvent-RAYCHEM-JBM-100-L-A-Wire-Connector-and-Terminal-
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If used as a power connection

Install conduit and fittings as shown. To minimize loosening due to vibration, use flexible conduit.
Pull in power and ground wires, strip off 1/2 in (13 mm) of insulation, and terminate.

If used as a splice or tee connection

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Plug in the light module in the terminal blocks marked L and N as shown here. (For simplicity the connected wires in the terminal blocks are not shown in this step.) nvent-RAYCHEM-JBM-100-L-A-Wire-Connector-and-Terminal-
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