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Electrical Wire and Cable

Overview of Splicing Electrical Wires

splicing electrical wires 0
Summary: Before splicing wires it is essential to understand the NEC Electrical Codes that apply to the specific circuit application. Next, we must select the proper electrical wire, junction box, and the type of electrical connectors that will be installed. Finally, to put the project together it is best to select the proper tools that will ensure the method of wiring is performed correctly as well a providing safety for the electrician.
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Prepairations for Splicing Electrical Wires

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The Electrical Box
The type of electrical box where the wiring is installed will depend on the type of devices to be installed and the specific location of the application. For example an interior electrical box may be different from an exterior electrical box. The type of box that will be used will depend on the specific type of surrounding construction method and environmental factors such as exposure to weather elements.

Approved electrical boxes must be selected which provide enough space for the number of wires that will be installed and the type of device that will be installed.
See more about types of electrical junction boxes.

The correct size wire connectors must be used for each wire splice.
See more about electrical wire and wire connectors.

After the splice is made be sure to cap off any remaining wires.

Electrical Codes for Splicing Electrical Wires

The following NEC Electrical Codes are an example of the codes that may apply to Splicing Electrical Wires for Home Wiring Projects.

314.19 Wiring Methods junction boxes accessible Junction boxes shall be installed so that the wiring contained in them can be rendered accessible without removing any part of the building.

314.16 Electrical Junction Box Fill - The volume of electrical boxes shall be sufficient for the number of conductors, devices, and cable clamps contained within the box. Nonmetallic boxes are marked with their cubic inch capacity.

NOTE: This is a partial list of electrical codes. Other codes may apply. Some codes may be updated.

See more about Home Electrical Codes

Electrical Tools and Materials for Making a Outlet Box Splice

Small Straight-Slot Screw Driver,
Lineman's Pliers,
Crimp Pliers,
Wire Strippers,
Sheath Knife,
Claw Hammer,
Volt Tester
Drop Light
Dust Mask and Eye Protection
Junction Box
Blank Cover for the junction box
Romex Wire
Romex staples
Yellow Wire or Red Wire Connectors
The electrical tools for each project may be different depending on the individual project requirements and the access to install electrical devices.
More about Electrical Tools
The electrical parts list will depend upon each individual project and the requirements to wire specific devices added to the project.
More about Electrical Parts

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Complete Guide to Home Electrical Wiring
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Methods for Home Electrical Wiring
Wiring Diagrams for Smoke Detectors
Interconnected Smoke Detector Wiring
Wiring Methods for AFCI Circuits
Electrical Codes for Smoke Detectors
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