Methods for Splicing Electrical Wires
How to Splice Electrical Wires and Cables: Is it safe to install junction boxes to splice several wires?
Splicing Electrical Wires and Cables
Electrical Question: Is it safe to install several junction boxes to splice several wires?
- I am having a home built, and a section of about 30 feet of about 10-15 wires were cut out of the basement rafters.
- The contractor had the electricians repair it and they used junction boxes.
- Three junction boxes at one end and seven at the breaker box location.
- I wonder if this is a safe way to do the repair.
- They also replaced the huge wire to the geo-thermo furnace except now it is 2 wires (they look like the wire for a drier).
This electrical question came from: Bill, a Homeowner from Granville, Ohio.
See more about Home Wiring for Ohio
Thanks for your electrical wiring question Bill.
How to Splice Electrical Wires and Cables
Application: Splicing Electrical Wires.
Skill Level: Intermediate to Advanced – Best performed by a Licensed Electrical Contractor.
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 circuit, turn it OFF and then Tag it with a Note before performing any wiring.
Notice: Installing additional electrical wiring should be done according to local and national electrical codes with a permit and inspected.
Special Materials: Properly sized wire connectors, anti-corrosion ointment, electrical tape, junction box and blank cover.
Safe Practices for Splicing Electrical Wiring
The process of splicing electrical wires is to safely join the wires in a junction box using approved methods.
- Splices must be made in approved junction boxes in compliance with the NEC national Electrical Code.
- The junction boxes must be large enough to contain the number of wires and size of the spliced wires.
- The junction boxes must be accessible.
- The spiced wire must match the same size and type of wire, or an equivalent and acceptable type according to code.
- Approved wire connectors must be used for the splices.
- Anti corrosion ointment inhibitor must be used when splicing aluminum wire.
- Metallic junction boxes must be bonded or grounded to the circuit ground wire.
- The junction boxes must be covered with the approved box cover.
More about Splicing Wires
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Electrical Code Directory covering electrical junction boxes, and electrical circuit wiring.
Be Careful and Be Safe - Never Work on Energized Circuits!
Consult your Local Building Department about Permits and Inspections for all Electric Wiring Projects.
The Safest Way to Test Electrical Devices and Identify Electric Wiring!The Non-Contact Electrical Tester
This is a testing tool that I have had in my personal electrical tool pouch for years, and is the first test tool I grab to help identify electrical wiring. It is a Non-contact tester, [amazon.com], I use for the detection of Standard Voltage in Cables, Cords, Circuit Breakers, Lighting Fixtures, Switches, Outlets and Wires. Simply insert the end of the tester into an outlet, lamp socket, or hold the end of the tester against the wire you wish to test. Very handy and easy to use.
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