Emerson NELSON AXPTC125 User manual

NELSON™INSTALLATION
AXPTC125 POWER TEE SPLICE CONNECTION KITINSTRUCTIONS
TULSA, OK 74146 TEL [phone] FAX [phone] www.nelsonheaters.com
GA-5052 Rev. 3
Sheet 1 of 10
August 2017
The AXPTC125 Power Tee Splice Connection Kit is
designed to connect three heater cables in a tee splice
configuration and with the removable plug can also connect
the heating cables to customer supplied power wiring. This
kit is designed for use with all wattages of Nelson Heat Trace
CLT-J(ordinary locations), CLT-JT(ordinary locations), LT-J,
LT-JT, UT-1, QLT-J, HLT-J and XLT-J heater cables. The
AXPTC125 is rated IP66/NEMA 4X. The AXPTC125
connection kit may be used to connect multiple heater
segments, connect different wattage cables together or to
provide access to serviceable equipment.
These instructions are to be used together with the
installation and maintenance instructions for self-regulating
heater cable (GA-1765).
KIT CONTENTS
QTY
ITEM
DESCRIPTION
1
1
ENCLOSURE WITH TERMINAL BLOCKS
3
2
POWER TERMINATION
3
3
END TERMINATION
1
4
SILICONE ADHESIVE
1
5
ENCLOSURE ADAPTER
1
6
STANDOFF
1
7
LOCKNUT
3
8
GREEN/YELLOW TUBE
1
9
CABLE CLAMP
1
10
CABLE TIE (not shown)
1
11
STOPPING PLUG AND LOCKNUT
6
12
GUIDE TUBES (not shown)
1
13
PRODUCT LABEL (not shown)
Pipe Clamp –PC03, PC12 or PC20 (included)
Fiberglass Tape –GT6 or GT60
HC-SPA Small Pipe Adapter –For 1.0”
(25 mm) diameter pipe and below.
Utility Knife
Wire Cutters
Adjustable Wrench (52mm [2.1”] size)
Needle Nose Pliers
Small Flat Blade Screwdriver
Large Slotted Screwdriver
Allen wrench (10mm [3/8”] size)
DESCRIPTION
INSTALLATION ACCESSORIES
OPTIONAL INSTALLATION MATERIAL
RECOMMENDED TOOLS

NELSON™
INSTALLATION
AXPTC125 POWER TEE SPLICE CONNECTION KITINSTRUCTIONS
TULSA, OK 74146 TEL [phone] FAX [phone] www.nelsonheaters.com
GA-5052 Rev. 3
Sheet 2 of 10
August 2017
Mark pipe where standoff will be mounted.
Allow approximately 18” (46 cm) of each heating cable
for installation.
Heating cable may be cut at a 45° angle for easier
penetration.
Insert cable retainer assembled with cable grommet into
standoff and clip into place.
Insert heating cables through standoff allowing
approximately 12” (31 cm) of cable for terminations.
Use cable lubricant if necessary.
Proceed to Heating Cable Terminations.

STANDOFF POSITIONING
CABLE CONSTRUCTION DETAILS
STEP 1
STEP 2
18” (46 cm)
12” (31 cm)
18” (46 cm)
18” (46 cm)
LT / UT-1 SELF-REGULATING CABLE
HLT / QLT / XLT SELF-REGULATING CABLE
CLT SELF-REGULATING CABLE
Braid
Core
Bus Wire
Bonded
Dielectric
Jacket
Inner
Jacket
Outer
Jacket
Core
Bus Wire
Inner
Jacket
Tinned
Copper Braid
Outer
Jacket
Core
Bus Wire
Inner
Jacket
Bare Copper
Braid
Outer
Jacket

NELSON™
INSTALLATION
AXPTC125 POWER TEE SPLICE CONNECTION KITINSTRUCTIONS
TULSA, OK 74146 TEL [phone] FAX [phone] www.nelsonheaters.com
GA-5052 Rev. 3 DRAFT
Sheet 3 of 10
August 2017
Lightly cut around the cable outer jacket and up
the center.
Bend cable to break outer jacket.
Remove outer jacket from heating cable.
Push braid back to create a bulge.
At the bulge, separate the braid to make
an opening.
Bend heating cable at opening and pull
the cable through.
Lightly cut around the cable inner jacket.
Cut up the middle of the inner jacket.
Bend cable to break inner jacket and remove.
Shave the core material from the outside of each
bus wire.
6” (152 mm)
7” (178 mm)
Do Not Cut Braid
Do Not Cut or
Nick Bus Wires
HEATING CABLE PREPARATION
3
Notch core material approximately ¼” (6 mm) for
the end of the heating cable.
Peel both bus wires from core material.
2
4
5
6
7
8
9
10
1
WARNING
WARNING

NELSON™
INSTALLATION
AXPTC125 POWER TEE SPLICE CONNECTION KITINSTRUCTIONS
TULSA, OK 74146 TEL [phone] FAX [phone] www.nelsonheaters.com
GA-5052 Rev. 3
Sheet 4 of 10
August 2017
Trim away any frayed or damaged bus wire
ends.
Pull braid tight to form a pigtail.
Lightly score core material and snap off at base
of bus wires.
11
12
HEATING CABLE PREPARATION
Insert guide tubes into power termination fitting, if
required. Note: XLT cable will need to be installed
without the assistance of guide tubes.

Insert buss wires into guide tubes, if used.
Make sure that all buss wire strands are
inserted through fitting tubes.
Remove guide tubes, if used previously.
Squeeze power termination opening and fill
void with silicone adhesive.
Push power termination to overlap jacket.
The silicone will set up in approximately 30
minutes with a complete cure after 24
hours.

Be sure that bus wires do not bunch or cross-over
1
2
3
4
POWER TERMINATION INSTALLATION
WARNING

NELSON™
INSTALLATION
AXPTC125 POWER TEE SPLICE CONNECTION KITINSTRUCTIONS
TULSA, OK 74146 TEL [phone] FAX [phone] www.nelsonheaters.com
GA-5052 Rev. 3 DRAFT
Sheet 5 of 10
August 2017
Lightly cut around the cable outer jacket and up
the center.
Bend cable to break outer jacket.
Remove outer jacket from heating cable.
Trim excess braid up to the heating cable
jackets.
Make a diagonal cut between bus wires.
Pinch end termination body and fill void with
silicone adhesive.
Push termination firmly onto heating cable.
½” (13 mm)
1
2
3
4
5
6
Slide green/yellow tubing over braid.
Trim bus wires and braid as necessary.
½” (13 mm)
END TERMINATION INSTALLATION
5
POWER TERMINATION INSTALLATION
WARNING
Do not megger or hipot until silicone completely
cured.
Braid must be kept from bus wires or shorting may
occur.
Note: The end seal is limited to exposure temperatures of 375oF (191oC).
The HEC100 or HEL100 kits can be used to terminate the cable off the pipe
in higher exposure temperature situations

NELSON™
INSTALLATION
AXPTC125 POWER TEE SPLICE CONNECTION KITINSTRUCTIONS
TULSA, OK 74146 TEL [phone] FAX [phone] www.nelsonheaters.com
GA-5052 Rev. 3
Sheet 6 of 10
August 2017
1-5
Pull excess heating cable back
through standoff.
Allow 1 ½” (3.81 cm) of each heating cable
to remain above top of standoff body.
Carefully slide enclosure adapter over cable
terminations.
Screw enclosure adapter into standoff until
fully seated at positive stop.
Mount standoff securely to pipe.
Insert supplied cable tie through slot
provided to prevent possible rotation of
enclosure.
1 ½” (38 mm)
Note: For pipes 1” (25mm)
and below, install HC_SPA
(purchased separately)
between standoff and pipe.
HC-SPA adapter
for small pipes.
STEP 3
STEP 4
STEP 5
STEP 6
FINAL ASSEMBLY
Enclosure
Adapter
Cable Tie

NELSON™
INSTALLATION
AXPTC125 POWER TEE SPLICE CONNECTION KITINSTRUCTIONS
TULSA, OK 74146 TEL [phone] FAX [phone] www.nelsonheaters.com
GA-5052 Rev. 3 DRAFT
Sheet 7 of 10
August 2017
Terminate bus wires and ground braids to terminal
block.
Install enclosure cover.
STEP 9
FINAL ASSEMBLY
Install enclosure and secure to enclosure adapter
with supplied locknut.
Do not over tighten locknut
Enclosure may be rotated in 90° increments to
match installation requirements.
STEP 7
90°
Locknut
Cable Clamp
Install cable clamp over heating cables at top of
enclosure adapter.
Tighten cable clamp with supplied screws.
Do Not over tighten.
STEP 8
ELECTRICAL WIRING
Ground Braid
Terminal Blocks
Heater Cable
Ground Braid
Heater Cable

NELSON™
INSTALLATION
AXPTC125 POWER TEE SPLICE CONNECTION KITINSTRUCTIONS
TULSA, OK 74146 TEL [phone] FAX [phone] www.nelsonheaters.com
GA-5052 Rev. 3
Sheet 8 of 10
August 2017
Install thermal insulation and protective lagging.
Apply sealant around standoff penetration to
prevent moisture entry.
Leave installation instructions with end user for
future maintenance and/or trouble shooting.
Fill in the blank fields on the label located on the
cover of the junction box as follows:
CIR. NO. –Electrical circuit heating cable
connected too.
CAT. NO. –Type of heating cable used
VOLTS –Operating voltage of heating cable –Max
277VAC
AMPS –Operating current of heating cable –Max
18A continuous current. 25A for XLT cable.
STEP 10
OPTIONAL CUSTOMER SUPPLIED POWER CONNECTION WIRING
Remove stopping plug and locknut.
Install flex conduit and drain as shown.
Terminate power and ground wires to terminal
block.
Install enclosure cover.

STEP 11
ELECTRICAL WIRING
Heating cable installations require incoming power
wiring to be rated for 105ºC operation.
Maximum steady-state current may not exceed 18
amps. 25 amps for XLT cable.
Verify that all connections are properly installed
and secure.

NELSON™
INSTALLATION
AXPTC125 POWER TEE SPLICE CONNECTION KITINSTRUCTIONS
TULSA, OK 74146 TEL [phone] FAX [phone] www.nelsonheaters.com
GA-5052 Rev. 3 DRAFT
Sheet 9 of 10
August 2017
To prevent electrical arcing and fire hazard, all cable connections and electrical wiring connections should be sealed
against moisture. This includes the use of proper cable sealing kits and the moisture proofing of all wire connections.
The metal sheath/braid of the heating cable must be connected to a suitable ground path before electrical power is
connected to this equipment.
Isolate electrical power supply before opening or removing the enclosure cover.
The enclosure cover must be secured with all screws provided to maintain the environmental ratings.
The main components used in this connection system may present a hazard from static electricity. Only surface cleaning
with a damp cloth is acceptable.
Routine maintenance is required to maintain compliance with health and safety legislation:
Check that the cover gasket is in place and not damaged each time the enclosure is closed.
Check that all cover screws are in place and secure each time the enclosure is closed.
Check the security of all cable entries on a routine basis.
Check that all electrical connections are tight and secure on a routine basis.
Check for physical damage and replace as required.
This connection system is designed for use in areas subject to normal industrial levels of vibration. They are not
designed for use in areas subject to intentional or extreme conditions of vibration.
Measures shall be taken to avoid accumulation of dust inside the standoff. This could result in unacceptable temperature
rises violating the certification of the equipment.
GENERAL CONDITIONS OF SAFE USE

NELSON™
INSTALLATION
AXPTC125 POWER TEE SPLICE CONNECTION KITINSTRUCTIONS
TULSA, OK 74146 TEL [phone] FAX [phone] www.nelsonheaters.com
GA-5052 Rev. 3
Sheet 10 of 10
August 2017
NEC®; NFPA 70: National Electrical Code®, International Electrical Code Series
IEEE Std 515™-2011 Standard for the Testing, Design, Installation, and Maintenance of Electrical Resistance Heat Tracing for
Industrial Applications
Class I, Division 2, Groups BCD
Class II, Groups EFG; (Canada Only)
Class III; (Canada Only)
Encl. Type 4X, Temp. Code T6 –T3;
Usages -G, -W
Class 1 Zone 1; Ex e II; T3 to T6
CSA . II . 2406879
Class I, Division 2, Groups ABCD;
Class II, Division 2 Groups FG;
Class III;
Encl. Type 4X, Temp. Code T*;
UL File E49805
* For temperature code see heating cable
or design information
Compliance with the Essential Health and Safety Requirements has been assured by compliance with:
ATEX: EN 60079-0:2012+A11:2013, EN 60079-30-1:2007, EN 60079-7:2007, EN 60079-31:2014
IECEx: IEC 60079-0:2011, IEC 60079-30-1:2007, IEC 60079-7:2006, IEC 60079-31:2013
IECEx KEM 07.0041
0344 Ex e IIC T6…T5* Gb for LT / UT-1 Series
KEMA 07ATEX0124 Ex e IIC T3 Gb for HLT / QLT / XLT Series
Ex tb IIIC T80oC…T95oC* Db for LT / UT-1 Series
II 2 G D Ex tb IIIC T195oC Db for HLT / QLT / XLT Series
-40ºC Tamb 55ºC
IP66
* For temperature code see heating cable or design information
Nelson Heat Tracing Systems products are supplied with a limited warranty. Complete Terms and Conditions may be found on Nelson's
website at www.nelsonheaters.com. Nelson is a trademark of the Appleton Group LLC (Heating Cable Systems), 2 Connecticut South Dr,
East Granby, CT, 06026. A division of Emerson Automation Solutions.
Class I, Division 2, Groups BCD
Class II, Groups EFG; Class III
Encl. Type 4X, IP66, Temp. Code T*;
Class 1 Zone 1; AEx e IIC; T*
-40ºC Tamb 55ºC
* For temperature code see heating cable
or design information
APPROVALS