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How to twist electric wire together

Applies to residential applications where twist-on wire connector is used
Use only 600 volt wire.
Lamp cord, extension cords are not rated 600 volt.
Use copper wire only. Aluminum wire is fire risk and should be avoided or installed by professional.

30 amp breaker use 10 gauge /


Buy:
10-2 gauge/ 30 amp
10-3/ 30 amp
Southwire electric tools
Yellow 12 gauge 20 amp


Yellow/ #12 gauge wire for 20 amp
with ground
Buy:
12-2 gauge/ 20 amp
12-3/ 20 amp

NMB is house wiring
UF is underground
Rolls of stranded wire
White 14 gauge 15 amp


White/ #14 gauge wire for 15 amp
with ground
Buy:
14-2 gauge/ 15 amp
14-3/ 15 amp

NMB is house wiring
UF is underground
armored cable
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Armored cable
Southwire armored cable cutter
Southwire armored cable cutter
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Rolls of stranded wire

Stranded wire
stranded wire
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Rolls of stranded wire
50-60 amp breaker use 6 gauge /
6-2 wire
Buy:
6-2 wire
Southwire electric tools
NMB is house wiring
UF is underground
40-50 amp breaker use 8 gauge /
6-2 wire
Buy:
8-2 wire
Southwire electric tools
NMB is house wiring
UF is underground
    
Copper ground wire
Use same size as other wire in circuit

Buy:
12 gauge copper ground wire
Ground wire
Green ground wire
Ground pigtails
Ground rods/ ground clamps at Amazon

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End cutting nippers at Amazon


When removing insulation from wire, do NOT score or put cuts on surface of copper wire. Doing so increases resistances on wire and creates weak point.
Buy tools:
Wire strippers at Amazon
Linesman pliers
Utility knife at Amazon
multimeter
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Multimeter
Electrical testers
how to twist electric wires

linesman pliers
Buy tools:
Wire strippers at Amazon
Linesman pliers
Utility knife at Amazon
End cutting nippers at Amazon
twist two electric wires

Do not solder solid copper wires together

Amperage on wire is heat, and can melt solder causing failed connection, and fire hazard

Solid copper wires do not need to be twisted together.
Twisting gives more permanence to connection.
Strip wires back to same length
Use correct wire connector so it grabs both wires and covers all bare copper


connect stranded wire and solid wire How to connect stranded wire and solid wire
If stranded wire is thinner than solid:
Strip back stranded wire so there is more copper visible than solid wire.
Wrap stranded wire around solid copper.
Leave solid wire straight.
When connecting two solids and one stranded: twist solids together first, then wrap stranded wire around solids.
Apply wire connector very tight.
Pull stranded wire to make sure it is tight.
If stranded wire is same diameter as solid:
Cut off both same length
Don't twist together, cover with wire connector.
Twisted wire 1) Strip stranded wire longer
2) Wrap stranded around the solid wire
3) Twist wire connector over both wires
4) Twist wire connector very tight
5) Pull stranded wire and make sure it will not come loose

Silver-colored stranded wire shown in image is steel and not aluminum. Steel stranded wire is available on some small electrical devices to save higher cost of using stranded copper wire.
Never use aluminum wire. Residential codes do not allow aluminum wiring.
Aluminum wire is a valid conductor used for power lines, but connections require compression fittings and devices that are rated for AL.
Improper use of aluminum inside a home is a fire hazard. Must use switches and outlets rated for AL.
Connecting aluminum and copper using ordinary wire connector instead of specified compression fitting is fire hazard since the aluminum expands when heated by amperage. The expansion and contraction of wires loosens connection, creating gaps for arcing that causes more overheating, that begins to melt the connection, eventually failing.

          

Look inside wire connector and see steel spring.
Screw on wire connector and steel spring cuts into soft copper wire.
Tighter you screw wire connector, the stronger the steel spring holds the wires together.

  


Multimeter

Test for breaks in wire/ Test for voltage
Most appliance require 80% rated voltage to function correctly
Buy
Multimeters at Amazon
Electric testers at Amazon
Resource:
How to test and replace element
How to test thermocouple
Element tests for 120 volts
How to test wire
Safety when testing wires:
Never touch wet or previously flooded appliance.
Never stand on wet surface when working on electric.
Never stand on bare soil, put down dry boards.
Tape tester leads to wood sticks to keep hands away from power.
Use non-contact voltage tester before touching wires.
Never touch or lean into any made of metal.
Remove metal objects from pockets.
Do not use oxygen or fuel accelerants in same room as electrical repairs

Resource:
Basic house wiring

Non-contact voltage tester

Test for power without touching connectors
NEVER assume power is OFF
Buy:
Non-contact voltage tester Amazon
Electric testers at Amazon
Resource:
How to test electric power is off
wire connector assortment

Twist-on wire connector assortments

Do not reuse old connectors
Buy:
Connector assortment at Amazon
Connector assortment at Amazon
Resource
How to select and install twist-on wire connectors
Weatherproof wire connector

Weatherproof wire connector

Connector cavity is full of silicone
Built-in cover keeps silicone in place
Protect from water, dust etc
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Weatherproof size 14 to 6 Amazon
Weatherproof size 22 to 8 Amazon

Resource
How to select and install connectors
Wire connector wrench
Wrench to apply wire connectors
Tighten connector

Buy:
Wire connector blaster
Twist connector wrenches at Amazon

Resources:
How to twist wire
How to select and install twist-on wire connectors

Buy:
Blue for 16-14 wire
Yellow for 12-10 wire

Resource:
How to install terminals
Treminals

Terminals

Buy:
Terminal kit
Blue for 16-14 wire
Yellow for 12-10 wire
Push on wire connectors

Push-on wire connectors in place of twist-on connectors

Buy:
Push on wire connectors Amazon
Red 3P connector for 10-14 gauge wire
Lever connectors for stranded wire at Amazon
remove cable staple
Buy
End cutting nippers at Amazon

 
linesman pliers
When removing insulation from wire, do NOT score or put cuts on surface of copper wire. Doing so increases resistances on wire and creates weak point.
Buy tools:
Wire strippers at Amazon
Linesman pliers
Utility knife at Amazon
End cutting nippers at Amazon

Use solid copper wire
Fire inside timer caused by stranded wire
Keep enclosure door closed at all times
Buy:
soldering guns
Resource

Timer caught fire
Insdulation under screw plate
Larger image
Both wires MUST be same gauge
Straighten each wire
Tighten screw very tight against copper wire



Larger image

Connect stranded and solid with wire connector and run jumper to screw plate.
Or add solder to stranded wire to make solid.
See example image

Household NM-B Wires are color-coded so inspectors/ electricians can easily identify which wire is used during construction
Match wire size and breaker amp rating
If your home was wired by professional electrician who pulled permits, then circuit breaker and wire size will match. If manufactured home or travel trailer has not been altered by homeowner then breaker and wire size will match.

If breaker is oversized for wire... fire danger
Breaker can let too much electricity travel through the wire. Wire can overheat and cause fire.
Call electrician if you suspect wiring is not correct,
Absolute electrocution danger when removing cover off main panel. More information below.
Main breaker terminals are still Hot when main breaker is turned off.

Buy:
Wire wire at Amazon
Resource:
Select correct wire and breaker size
How to replace circuit breaker
Electricity leaves power plant What is 3-phase electric: power plant to end user
Basic house wiring
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Troubleshoot electric water heater
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