Electric cable splice connectors how to#
Electric cable splice connectors install#
Electric cable splice connectors code#
Electric cable splice connectors free#

Electric cable splice connectors install#

You must install a box or conduit body at each conductor splice connection point, outlet, switch, junction, or pull point, with exceptions in these sections:ħ25.3 - Class 2 and 3 Control and Signaling Conductors must be continuous between all points of the system. Placement of the splices is important, as well. Use twist-on wire connectors where necessary.

Electric cable splice connectors free#

You must cover splices and the free ends of all conductors - used or not - with insulation at least equal to that of the conductor.

The wires will bond properly if inserted straight, but you risk making a poor connection if you pre-twist. Manufacturers of insulated twist-on wire connectors suggest you not hand-twist the wires together before applying the connector. But no matter what the application, you cannot use a u-bolt fitting designed to splice non-electrical cables. Special applications, such as underground burial, require splicing devices listed for those applications. If you don't use a listed splicing device, weld your connections exothermically. It's critical that you use the right splicing devices. Install a short lead wire on the terminal and splice it to the circuit conductors. Order a terminal device that crimps on the end of the conductor and terminates on the terminal.

But if you are at the installation stage of the project, you have three choices for fixing the problem:Ĭontact the manufacturer or dealer and request the proper terminals, bolts, washers, and nuts. What if your wire is too large for the terminal? The designer should order equipment with terminals that accommodate the larger wire. Terminals listed for more than one wire must be identified for this purpose in the equipment instructions or on the terminal.īe sure to match wire size and terminal ratings. Terminal actions.įollow the one-wire-per-terminal rule.

Electric cable splice connectors how to#

Fortunately, these tools come with instructions that tell you how to get the right reading every time. There are several ways to damage a torque wrench, from storing it with the spring compressed to failing to exercise the spring, both of which can yield meaningless readings. If you have the device but not the torque value, contact the manufacturer. Contrary to a popular myth, contact resistance rises dramatically with over-torque. Generic torque tables do not account for all the variables that affect developing a torque value for a connection. To get good connections, follow the manufacturer's torque specifications, which are often included with the equipment instructions. Terminals must ensure good connections without damaging the conductors. Terminals and splicing devices suitable for both copper and aluminum must be marked as CU/AL or CO/ALR.

All aluminum conductors require wire-brushing immediately prior to assembly.Ĭopper and aluminum conductors must not make contact with each other in a terminal or splicing device not specifically listed and identified for the purpose. Split-bolt lugs listed for aluminum-to-aluminum come with detailed instructions that vary among lug designs. Terminals listed for aluminum typically have an antioxidant to reduce aluminum oxide, which reduces the conductor/terminal contact resistance. Terminals and splicing devices suitable only for aluminum must be marked AL.

Electric cable splice connectors code#

In 404.14(C) and 406.2(C), the Code requires you to use terminals and splicing devices identified for use with the conductor material. If it states “Suitable for 18-2 AWG,” you can use either solid or stranded conductors with the terminating device. If it states “Suitable for 18-2 AWG Solid,” you can use only solid conductors with it. For example, if the labeling on a terminal device states “Suitable for 18-2 AWG Stranded,” you can use only stranded conductors with that device. The Code requires you to follow manufacturer's instructions when installing electrical equipment (110.3), and this applies to terminal devices. They may seem like just the finishing touches, but splices and terminations are critical components of any electrical system.