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
- 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.
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