Page 718 - 2018_IRC

GENERAL REQUIREMENTS

E3406.10 Terminals. Connection of conductors to terminal E3406.14.1 Permitted methods. Equipment grounding
parts shall be made without damaging the conductors and conductors, grounding electrode conductors, and bonding
shall be made by means of pressure connectors, including set- jumpers shall be connected by one or more of the follow-
screw type, by means of splices to flexible leads, or for con- ing means:
ductor sizes of 10 AWG and smaller, by means of wire bind- 1. Listed pressure connectors.
ing screws or studs and nuts having upturned lugs or the 2. Terminal bars.
equivalent. Terminals for more than one conductor and termi-
nals for connecting aluminum conductors shall be identified 3. Pressure connectors listed as grounding and bonding
for the application. [110.14(A)] equipment.
E3406.11 Splices. Conductors shall be spliced or joined with 4. Exothermic welding process.
splicing devices listed for the purpose. Splices and joints and 5. Machine screw-type fasteners that engage not less
the free ends of conductors shall be covered with an insula- than two threads or are secured with a nut.
tion equivalent to that of the conductors or with an insulating 6. Thread-forming machine screws that engage not less
device listed for the purpose. Wire connectors or splicing than two threads in the enclosure.
means installed on conductors for direct burial shall be listed
for such use. [110.14(B)] 7. Connections that are part of a listed assembly.
8. Other listed means. [250.8 (A)]
E3406.11.1 Continuity. Conductors in raceways shall be
continuous between outlets, boxes, and devices and shall E3406.14.2 Methods not permitted. Connection devices
be without splices or taps in the raceway. or fittings that depend solely on solder shall not be used.
[250.8 (B)]
Exception: Splices shall be permitted within surface-
mounted raceways that have a removable cover.
[300.13(A)] SECTION E3407
E3406.11.2 Device connections. The continuity of a CONDUCTOR AND TERMINAL IDENTIFICATION
grounded conductor in multiwire branch circuits shall not E3407.1 Grounded conductors. Insulated grounded conduc-
be dependent on connection to devices such as receptacles tors of sizes 6 AWG or smaller shall be identified by a contin-
and lampholders. The arrangement of grounding connec- uous white or gray outer finish or by three continuous white or
tions shall be such that the disconnection or the removal of gray stripes on other than green insulation along the entire
a receptacle, luminaire or other device fed from the box length of the conductors. Conductors of sizes 4 AWG or larger
does not interfere with or interrupt the grounding continu- shall be identified either by a continuous white or gray outer
ity. [300.13(B)] finish or by three continuous white or gray stripes on other
E3406.11.3 Length of conductor for splice or termina- than green insulation along its entire length or at the time of
tion. Where conductors are to be spliced, terminated or installation by a distinctive white or gray marking at its termi-
connected to fixtures or devices, a minimum length of 6 nations. This marking shall encircle the conductor or insula-
inches (152 mm) of free conductor shall be provided at tion. [200.6(A) & (B)]
each outlet, junction or switch point. The required length E3407.2 Equipment grounding conductors. Equipment
shall be measured from the point in the box where the con- grounding conductors of sizes 6 AWG and smaller shall be iden-
ductor emerges from its raceway or cable sheath. Where tified by a continuous green color or a continuous green color
the opening to an outlet, junction or switch point is less with one or more yellow stripes on the insulation or covering,
than 8 inches (200 mm) in any dimension, each conductor except where bare. Conductors with insulation or individual
shall be long enough to extend at least 3 inches (75 mm) covering that is green, green with one or more yellow stripes, or
outside of such opening. (300.14) otherwise identified as permitted by this section shall not be
E3406.12 Installation. Where a tightening torque is indi- used for ungrounded or grounded circuit conductors. (250.119)
cated as a numeric value on equipment or in installation Equipment grounding conductors 4 AWG and larger
instructions provided by the manufacturer, a calibrated torque AWG that are not identified as required for conductors of
tool shall be used to achieve the indicated torque value, sizes 6 AWG and smaller shall, at the time of installation, be
except where the equipment manufacturer has provided permanently identified as an equipment grounding conductor
installation instructions for an alternative method of achiev- at each end and at every point where the conductor is accessi-
ing the required torque. [110.14 (D)] ble, except where such conductors are bare.
E3406.13 Grounded conductor continuity. The continuity The required identification for conductors 4 AWG and
of a grounded conductor shall not depend on connection to a larger shall encircle the conductor and shall be accomplished
metallic enclosure, raceway or cable armor. [200.2(B)] by one of the following:
E3406.14 Connection of grounding and bonding equip- 1. Stripping the insulation or covering from the entire
ment. The connection of equipment grounding conductors, exposed length.
grounding electrode conductors and bonding jumpers shall be 2. Coloring the exposed insulation or covering green at
in accordance with Sections E3406.14.1 and E3406.14.2. the termination.

2018 INTERNATIONAL RESIDENTIAL CODE ® 693
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