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How To Splice Electrical Wires

Common Methods for Splicing Electrical Wiring: Electrical Junction Box or Splice Box, Location of the Splice Box, Wire Connectors for the Spliced Wires, Grounding the Splice Box.

Guidelines for Splicing Electrical Wiring
Electrical Question: I am installing wiring for a hot tub and I did not buy enough length of 8/3 AWG with ground copper wires.

Any advice will be appreciated.

This electrical wiring question came from: Larry, a Handyman from Gadsden, AL.

Dave’s Reply:
Thanks for your electrical wiring question Larry.

Application: Splicing Electrical Wiring
Skill Level: Intermediate to Advanced.
Tools Required: Basic Electricians Pouch Hand Tools and Voltage Tester.
Estimated Time: Depends on the personal level experience and ability to work with tools and access to the wiring.
Precaution: Identify the hot tub circuit, turn it OFF and then Tag it with a Note before performing any wiring.
Notice: Installing additional electrical wiring should be done with a permit and inspected.
Special Materials: Properly sized wire connectors, anti-corrosion ointment, electrical tape, junction box and blank cover.

Common Methods forĀ  Splicing Electrical Wiring

Electrical splices are permitted as long as the materials and the method is done according to code as used in the example below.

More about Electrical Wiring

Splicing Electrical Wires

Home Electrical Wire

Junction boxes


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Be Careful and Be Safe - Never Work on Energized Circuits!
Consult your Local Building Department about Permits and Inspections for all Electric Wiring Projects.

FAQs Frequently Asked Questions and Comments

2 Responses to “How To Splice Electrical Wires”
  1. Alex M says:

    The man just asked if it was possible to splice #8.
    Answer: Yes, it is.
    Reliable waterproof splicing can be done without splice box as well, this is more a red-tape issue than electrical issue.

    • Dave Rongey says:

      Thanks Alex,
      Absolutely – when using an approved method and material a buried splice is permitted. However, because of possible environmental factors that could affect the integrity of the splice it is always a great idea to enclose the splice in a approved enclosure that is accessible. The chosen method of splice is mostly site and project specific.


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