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Wire connection failed

Wire connection loose

Burned wire connection

Weatherproof wire connector

Outdoor wire connections

Check for dampness and corrosion.

Damp location can rust the steel spring inside the wire connector, and also pit and corrode the surface of any bare electric wire.

Solve for corroded connection.:
Cut back and use fresh wire... or... clean solid copper wire with sandpaper...
... and splay open the stranded wire by rubbing between two fingers, continue rubbing the wire between fingers until clean.
Then use NEW wire connector.
Buy from my affiliate links
Weatherproof size 14 to 6 Amazon
Weatherproof size 22 to 8 Amazon

Resource
How to select and install twist-on wire connectors
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 electrcial repairs

Resource:
Basic house wiring
Wire connector wrench

Wrench to apply wire connectors

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
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

Non-contact voltage tester

Test for power without touching connectorss
NEVER assume power is OFF
Buy:

Non-contact voltage tester Amazon
Electric testers at Amazon
 
Resource:
How to test electric power is off

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
Treminals

Terminals

Buy:
Terminal kit
Blue for 16-14 wire
Yellow for 12-10 wire
Read about terminals
Resource:
How to install terminals
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

Fire caused by stranded wire

Do not use stranded wire under screw plate

Applies to timers, switches, outlets, pumps etc.
Small devices, with small loads, such as lamp socket, stranded wire is fine
Add solder to 1" length of tightly twisted stranded wire to make into solid wire
Heat wire. Touch solder to wire. Let cool. File away over-solder.
Buy:
soldering guns
Resource

Timer caught fire
add solder to stranded wire

Turn stranded wire into solid wire

Add solder to 1" length of tightly twisted stranded wire to make into solid wire
Heat wire. Touch solder to wire. Let cool. File away over-solder.
Buy:
soldering guns
Resource

Timer caught fire

linesman pliers
Buy tools:
Wire strippers at Amazon
Linesman pliers
Utility knife at Amazon
End cutting nippers at Amazon

Insulation resistance tester: Is the wire insulation still good?

Test insulation of wire
Power is off/
Test wire to sheath of wire insulation
Temperature and humidity measurements affect outcome

Buy:
Insulation resustance tester
Resource
How to test wire insularion

Additional links:
main breaker box
Larger image
See inside main breaker box
Electricity leaves power plant

What is 3-phase electric: power plant to end user

How to wire 3-phase timer


Basic household wiring
Basic water heater circuit

Figure volts amps watts for electric water heater
Test elements
Replace elements
How to wire tankless electric
How to change water heater temperature using timer
Change water heater from 240Volt to 120Volt
Replace thermostats
How to wire thermostats
How to wire water heater for off peak operation

How to twist wire
How to wire Cooper 277 pilot light switch
How to wire combo switch-outlet
How to replace 3-speed fan switch
 

How to wire dimmer
How to wire 3-way dimmer
How to wire occupancy switch
How to wire motion detector
How to wire TM811 and TM8111 switches
How to wire wall timers
How to wire box timers
How to wire off-delay timer
Wire off-delay timer
How to wire pin timers

How to wire and troubleshoot photo eyes
Reverse photoeye so it turns on in day
24 Volt photoeye
24 volt programmable timer

How to wire switches
How to add switch
How to add 3-way switch


Timer for 3-way switch
Timer for 4-way switch

How to add outlet 
How to wire 3-way switches
How to wire 4-way switches


Troubleshoot Malibu outdoor lights
Terminals 
Select and install wire connectors
Select wire size

Electrical formulas
Electricians forum
 

Electrical pages


How to wire arc fault breaker
How to wire GFCI
How to wire GFCI combo

Basic water heater circuit
How to wire water heater for 120Volt
Install old work box

How to drop wire from attic
Wire connector

How to wire 240volt outlets
How to install 3-phase timer
How to wire 3-phase outlets
How to wire 3-phase surge protector
What is 3-phase

How to wire whole house surge protector
How to wire under-counter water heater
 

See inside main breaker box
Replace breaker
Install subpanel

Fuseholder
Contactors
How to solder wires
Whole house surge protector
3-phase surge protection
Circuit breakers

Difference between 120 volt and 240 Volt
Difference between 50Hz and 60Hz
How to install electric meter on water heater
How to wire water heater thermostat
How to wire water heater with switches and timers

6x6x4 Enclosures
Intermatic timer enclosures

Convert AC water heater to DC
How to wire DC solar water heater
DC relays for solar water heater
How to add another thermostat to water heater

How many Kwh to heat water
Chart for figuring heating time for electric heater
Gas and electric water heaters Industrial electric at Amazon

Industrial supplies at Amazon

Industrial and scientific Amazon
Intermatic control centers Intermatic control centers:
+ manuals and parts


All control centers:
+ manuals and parts


Including Z-wave
box timers Compare box timers

Compare ways to control Gas and Electric heaters
programmable timer Compare programmable timers

Control water heater with programmable wall timer
Countdown timers Compare countdown timers

Control water heater with countdown timer
Compare power packs

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