Chromalox RTPC Installation Instructions Manual

Chromalox

®

DIVISION 4 SECTION

RT

SALES

REFERENCE

DATE

SERVICE REFERENCE

Installation Instructions

PJ451-11

161-562762-001

MARCH, 2009

(Supersedes PJ451-10)

RTPC Power Connection Kit for Self-Regulating

and Constant Wattage Rapid-Trace Heating Cable

RTPC Power Connection Kit Parts:

1 - Molded Junction Box consisting of:

Base - Box - Lid - Hardware
1 - Three Position Terminal Block
1 - Mounting Screw for Terminal Block

1 - Black Cable Grommet
1 - Orange Cable Grommet
1 - Cover Gasket

ELECTRIC SHOCK HAZARD. Disconnect all power
before installing or servicing heating cable and
accessories. A qualified person must perform
installation and service of heating cable and
accessories. Heating cable must be effectively
grounded in accordance with the National
Electrical Code. Failure to comply can result in
personal injury or property damage.

NOTE: All electrical wiring, including GFCI (Ground Fault
Circuit Interrupters), must be done according to National
Electrical or local codes by a qualified person.

The RTPC Kit is used to connect base, braided (-C) and over­coated (-CR or -CT) versions of Self-Regulating and Fluoropolymer
insulated Constant Wattage Rapid-Trace Heating Cables to power.

© 2010 Chromalox, Inc.

GENERAL

The cable grommet is furnished with this kit, such that the black
grommet is used for self-regulating cables SRL, SRF, SRM/E,
SRL/S, SRMF/S and the orange grommet is used for constant
wattage cable CWM and self-regulating cable SRS.

Each kit contains enough material to make one power connec­tion point. It is possible to connect up to three Self-Regulating or
two Constant Wattage Cables in the same box. (One grommet
required for each cable.)

Materials required for installation include: standard electrical
cutters, screwdriver, sharp utility knife and a pipe strap
(Chromalox PS or equal).

Wipe inside lip of cover with a clean cloth. Remove protective
backing from the gasket and affix it to the cover lip. Press firmly
all around for proper adhesion.

INSTALLATION

NOTE: These instructions are for all Self-Regulating and
Constant Wattage heating cables in ordinary locations. Consult
factory for installation of braided cable in hazardous locations.
Not all instructions are for all cables. Each step of the instructions
will have a heading in boldface stating what type of cable each
instruction is intended for.

1. FOR CONSTANT WATTAGE CABLES:

Cut the cable 12 inches past the last module point (indentation
in cable). NOTE: Cutting the cable between module points
creates a non-heating cold lead. See Figure 1.

Module Point

12”

Figure 1

2. FOR CABLE WITH EXPOSED METAL BRAID (-C):

Push the braid back 12 inches on the cable. See Figure 2.

12”

Figure 2

Figure 4

5. FOR OVERCOATED CABLES (-CR or -CT):

Score the outer insulation seven (7) inches from the end of
cable. Remove the jacket to expose the metal braid. See Figure 5.

CAUTION: When removing the outer jacket, be
careful not to damage the braid or the base
cable insulation.

3. FOR ALL CABLES:

Feed the ends of the cables through the appropriate hole in
the base. Allow eight (8) inches of cable to extend above the
top of the base. See Figure 3.

8”

Figure 3

4. FOR ALL CABLES:

Slide cable grommet over the end of the cable and insert it
into the opening in the base. Secure the base to the pipe by
threading the appropriate sized pipestrap through the slot in
the mounting plate. Tighten the pipestrap until the base is
securely attached to the pipe. See Figure 4.

7”

Figure 5

6. FOR ALL CABLES:

Punch out the knockouts on the bottom of the box which cor­respond to the openings in the base through which the heating
cable passes. Be careful to punch out only those knockouts to
be used. If one is mistakenly punched, blank grommets can be
ordered to re-establish the water tight seal. See Figure 6.

Figure 6