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Can timer be wired with dimmer
30 amp breaker use 10 gauge /


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

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Ground wire
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Ground pigtails
Ground rods/ ground clamps at Amazon

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multimeter
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Electrical testers
Anthony asks:
Can timer be wired with dimmer switch
Answer

Generally, yes if dimmer is installed between timer and light.

Timer must come first in the circuit,
and then the dimmer,
and then the light.

If the dimmer is first in the circuit, the the operation of timer can be affected.

Which timer? Answer may depend on specific brand and model of timer. Attach photo.
What type of load? Are both timer and dimmer rated for same voltage and same load (LED, fluorescent etc)
Anthony:
The timer that I was looking at was the Intermatic In-Wall Timer, model Ei500.
I have not chosen a dimmer yet but I will make sure that both are rated for the same voltage and load when I do make my purchase.

Answer Ei500 is solid household timer, and requires neutral wire.
(Ei500 is different from EJ500) See resource: Intermatic timers
Ei500 will work fine with dimmer
As long as dimmer is located between the timer and the light bulb
Intermatic EI500

Ei500  7-day  7 programs each week/ single-pole/ any type load/ CFL / ballast / 1/4 hp motor
Single-pole timer
7-day or 24-hour digital timer with 7 ON and 7 OFF operations
Incandescent, CFL, ballast,
1/4 Hp motor
8 amp, 1000 watt, 1/4 Hp.
Neutral required, internal rechargeable battery

Buy:
Ei500 white color at Amazon
Ei500 white or ivory color at Amazon
LED bulbs at Amazon

Aube

Woods

Westek
Intermatic EI500
Intermatic
Aube T1032
Honeywell
Tork 720
Tork 720
Swilight LST 700
Sylvania

Larger image
Timer and dimmer

Ei500  7-day  7 programs each week/ single-pole/ any type load/ CFL / ballast / 1/4 hp motor

Single-pole timer
7-day or 24-hour digital timer with 7 ON and 7 OFF operations
Incandescent, CFL, ballast,
1/4 Hp motor
8 amp, 1000 watt, 1/4 Hp.
Neutral required, internal rechargeable battery

Install 120 volt dimmer between 120 volt timer and 120 volt Load
Typical indoor wall timer is wired as shown
Neutral wire required

Buy
Ei500 white color at Amazon
Ei500 white or ivory color at Amazon
LED bulbs at Amazon

Resources:
Compare all programmable timers
All Intermatic timers

Ei500 requires neutral wire
Intermatic timer

Ei500 timer requires neutral wire

Many timers and dimmers require neutral wire

1) Ei500 Requires neutral wire
Neutral wires are white wires, covered with wire connector, and pushed to back of box.
See Inside Main Breaker Box

2) No neutral wire available in box?
ST01 battery-operated timer might be best option.
See illustrations below

3) Dimmers rated more than 600 watts usually require neutral wire.
Exception rotary dimmer

4) Check dimmer load ratings ....
Less than 600 watt without neutral are often rated incandescent-only, not CFL

5) High wattage dimmers, full 1000-1500 watt...
Can get very warm to touch, might have aluminum fins on the faceplate,,,
Amp draw for these dimmers exceed timer ratings... timer will burn out sooner.

6) Dimmers can be warm to touch... because they are consuming excess power that causes light to dim....
Dimmers should never be hot
Heat from dimmers might shorten life of timer located inside same box.

7) Household timers and switches and outlets etc should never feel warm or hot
Simple electric safety overview:
Resources
http://waterheatertimer.org/Troubleshoot-household-electricity.html#heat


All Intermatic timers
ST01C  7-day programmable -or dawn-dusk/ battery operated no neutral required / single-pole or 3-way/ CFL, fluorescent lights etc/ control any voltage load/ 12-24-120-240-277Volt / motor loads up to 120 volt 1 Hp/ 240V 2 Hp
Ei600  / same as ST01 except 5 yr warranty instead of 1 yr warranty
/astronomic or programmable/  single-pole 3-way/ 1 yr warranty/ No neutral/ uses CR2 battery
Programmable or Astronomic dawn-dusk/ 6 ON and 6 OFF settings per 7-day week
Incandescent, CFL, LED, motors, ballast, 2 amp 12-28 Volt DC loads/ 24, 120, 240, 277 Volt AC loads
Permanent override/ Power outage carryover/ No loss of memory in power outage or battery change
Buy. no neutral/ single-pole or 3-way:
Intermatic ST01c timer/ 1 year warranty
ST01a almond
Intermatic ST01K combination timer
Ei600/ 5-year warranty timer
CR2 replacement battery
LED bulbs
Manuals/ resources:
ST01C manual
Compare all programmable timers

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
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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
Buy from my affiliate links
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

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Wire connector blaster
Twist connector wrenches at Amazon

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

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

Resource:
How to install terminals
Treminals

Terminals

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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

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

 
linesman pliers
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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
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soldering guns
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Timer caught fire
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