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Cable
Installation Manual
for Power and
Control Cables
Ninth Edition
www.generalcable.com
Cable Installation Manual for Power and Control Cables General Cable
Global Reach
General Cable serves customers through a global network of 47 manufacturing facilities in 25 countries and sales
representatives and distribution centers worldwide. The Company is solely dedicated to the production of
high-quality energy, industrial, specialty and communications wire and cable products. In addition to its breadth
of product line and strong brand recognition, the Company offers competitive strengths in such areas as
technology, manufacturing, distribution and logistics, and sales and customer service. This combination enables
General Cable to better serve its customers as they expand into new geographic markets.

Cable Installation Manual for Power and Control Cables
Ninth Edition, September 2011
2 www.generalcable.com info@generalcable.com
USING THIS MANUAL
The information contained herein is intended for evaluation and use by technically skilled and
appropriately trained persons. Although the information is believed to be accurate as of the date of
printing, General Cable makes no representations or warranties, expressed or implied, with respect to the
accuracy or completeness of this document, nor does General Cable assume any obligation to update or
correct the same in the future. You should always consult a trained professional for the most current
industry practices and procedures unique to your application.
The numerical data, formulas and other calculations provided in this document are believed to be accurate
and concise as of the date of printing. However, normal dimensional tolerances in actual cable
constructions and variations in the installation conditions may lead to differences in the indicated values
and actual measured values.

Cable Installation Manual for Power and Control Cables
Ninth Edition, September 2011
info@generalcable.com www.generalcable.com 3
Table of Contents
1. INTRODUCTION.........................................................................................................................................9
2. PRE–INSTALLATION..................................................................................................................................9
2.1 CABLE INSPECTION......................................................................................................................9
2.2 CABLE HANDLING......................................................................................................................10
2.3 CABLE STORAGE.........................................................................................................................11
2.4 PRE-INSTALLATION CHECKLIST.............................................................................................11
3. INSTALLATION.........................................................................................................................................12
3.1 INSTALLATION TEMPERATURE...............................................................................................13
3.2 EqUIPMENT..................................................................................................................................13
3.2.1 Checklist................................................................................................................................13
3.2.2 Cable Feed-In Setups............................................................................................................14
Fig. 3.2.2.1 Proper Feed-In Setup .......................................................................................14
Fig. 3.2.2.2 Improper Feed-In Setup...................................................................................14
Fig. 3.2.2.3 Effective Curvature..........................................................................................15
3.2.3 Wire-Pulling Compound Suppliers.......................................................................................16
3.3 ExPOSED RUNS (OPEN WIRING)..............................................................................................16
3.3.1 NEC.......................................................................................................................................16
3.3.1.1 Wiring Methods.......................................................................................................16
3.3.1.1.1 Metal Clad Cable....................................................................................16
3.3.1.1.2 Medium-Voltage Cable...........................................................................17
3.3.1.1.3 Messenger-Supported Wiring.................................................................17
3.3.1.1.4 TC-ER Tray Cable..................................................................................17
3.3.1.2 Securing and Supporting.........................................................................................17
3.3.1.3 Ampacity.................................................................................................................17
3.3.2 CEC.......................................................................................................................................17
3.3.2.1 Wiring Methods.......................................................................................................17
3.3.2.1.1 750 V or less...........................................................................................18
3.3.2.1.2 Over 750 V.............................................................................................18
3.3.2.1.3 Installation Conditions............................................................................18
3.3.2.2 Hazardous Locations...............................................................................................18
3.3.2.3 Ampacity ................................................................................................................18
3.3.3 Non-Code Installations..........................................................................................................18
3.3.3.1 Ampacity.................................................................................................................19
3.4 CABLE TRAY.................................................................................................................................19
3.4.1 NEC.......................................................................................................................................19
3.4.1.1 Wiring Methods.......................................................................................................19
3.4.1.1.1 General Industrial and Commercial........................................................19
3.4.1.1.2 Industrial Establishments........................................................................19
3.4.1.1.3 Hazardous Locations..............................................................................19

Cable Installation Manual for Power and Control Cables
Ninth Edition, September 2011
4 www.generalcable.com info@generalcable.com
Table of Contents
3.4.1 NEC (cont’d)
3.4.1.2 Voltage Separation...................................................................................................20
3.4.1.2.1 600 V or Less..........................................................................................20
3.4.1.2.2 Over 600 V.............................................................................................20
3.4.1.3 Tray Fill...................................................................................................................20
Table 3.4.1.3 Cable Tray Fill...................................................................................20
3.4.1.4 Splices.....................................................................................................................20
3.4.1.5 Ampacity.................................................................................................................20
3.4.1.5.1 2000 V or Less........................................................................................20
3.4.1.5.2 Over 2000 V...........................................................................................20
3.4.2 CEC.......................................................................................................................................21
3.4.2.1 Conductors in Cable Trays......................................................................................21
3.4.2.1.1 Type TC Tray Cable................................................................................21
3.4.2.1.2 Non-Armoured Jacketed (Sheathed) Cable............................................21
3.4.2.2 Single Conductors...................................................................................................21
3.4.2.3 Ampacity ................................................................................................................21
3.4.3 Non-Code Installations..........................................................................................................22
3.5 MESSENGER-SUPPORTED WIRING..........................................................................................22
3.5.1 NEC.......................................................................................................................................22
3.5.1.1 Wiring Methods.......................................................................................................22
3.5.1.1.1 General Industrial and Commercial........................................................22
3.5.1.1.2 Industrial Establishments........................................................................22
3.5.1.1.3 Hazardous Locations..............................................................................23
3.5.1.2 Splices.....................................................................................................................23
3.5.1.3 Ampacity.................................................................................................................23
3.5.1.3.1 2000 V or Less........................................................................................23
3.5.1.3.2 Over 2000 V...........................................................................................23
3.5.1.3.3 Type MC Cable.......................................................................................23
3.5.2 CEC.......................................................................................................................................24
3.5.2.1 Installation...............................................................................................................24
3.5.2.2 Flame Spread...........................................................................................................24
3.5.2.3 Ampacity ................................................................................................................24
3.6 UNDERGROUND INSTALLATIONS...........................................................................................24
3.6.1 NEC.......................................................................................................................................24
3.6.1.1 Installation Requirements........................................................................................24
3.6.1.2 Ampacity Calculations............................................................................................24
3.6.1.3 Ampacity Tables......................................................................................................25
3.6.1.3.1 2000 V or Less........................................................................................25
3.6.1.3.2 2001 V to 35 kV......................................................................................25