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How to wire GE 15136 timer
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 /
120-240 volt 30 amp outlet can be installed on 30 amp breaker only/ use 10 gauge wire ... cannot be connected to 15-20-40 amp breaker.

Orange/ #10 gauge wire, with ground ... 30 amp capacity. Safe maximum: 30 x 80% = 24 amps.
Buy:
10-2 gauge/ 30 amp
10-3/ 30 amp
Southwire electric tools
Yellow 12 gauge 20 amp
120 volt 20 amp outlet can be installed on 20 amp breaker, but not 15 amp breaker/ use 12 ga wire.
... cannot be connected to 30-40 amp breaker. 1

Yellow/ #12 gauge wire, with ground ... 20 amp capacity. Safe maximum 16 amps.
Buy:
12-2 gauge/ 20 amp
12-3/ 20 amp

NMB is house wiring
UF is underground
Rolls of stranded wire
HOOK UP Wires
White 14 gauge 15 amp
120 volt 15 amp outlet, AFCI, GFCI, timer, switch etc can be installed on 15 or 20 amp breaker. Never connect 15 gauge wire to 20-30-40 amp breaker.

White/ #14 gauge wire,  with ground ... 15 amp capacity. Safe maximum 12 amps.
Buy:
14-2 gauge/ 15 amp
14-3/ 15 amp

NMB is house wiring
UF is underground
50-60 amp breaker use 6 gauge /
240 volt 50 outlet can be installed on 50 amp breaker only
6-2 wire
Buy:
6-2 wire
Southwire electric tools
NMB is house wiring
UF is underground
40-50 amp breaker use 8 gauge /
240 volt 40 amp outlet can be installed on 40 or 50 amp breaker only
6-2 wire
Buy:
8-2 wire
Southwire electric tools
NMB is house wiring
UF is underground
     
Copper ground wire.
Every device, load, metal enclosure etc must be grounded. Ground wire must be continuous throughout installation, never switched on-off, never used as a Neutral wire.
Generally ... 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
armored cable
Non metallic flexible cables must carry ground wire, but do not have hazard of short circuit causing injury from shock.

Armored steel cable can be used as a grounded connection, and will protect wires from damage. Metal can be energized from an insulation failure.

All conduit ...metal, plastic ... flexible and rigid ... must be attached to structure, and attached to enclosures, boxes.
Movement, damage and deterioration are major cause of electrical failure.
Buy:
Non-metallic flexible conduit
Power whip
Armored cable
Southwire armored cable cutter
Pull boxes
Southwire armored cable cutter
Electrical tools must be insulated.
Always best to disconnect power, but insulation failure, lack of proper grounding, grounded neutral, lack of GFCI, out-of-code wiring, generator operating without transfer switch, and other problems still pose a risk to anyone working on electric power ... even when breaker is off.

Buy:
Electrician tools kits
KLEIN TOOLS
Tools kits
IRWIN tools
KNIPEX

Telephone cable knife
Low Voltage Mounting Bracket for Telephone
stranded wire
600 volt 12 ga Stranded wire ot THHN wire is good for conduit with multiple wires ... but stranded cannot be installed under screw terminals on outlets, switches, timers etc without risk ... of heat causing splayed strands ....that come loose ... and begin to arc. Connect stranded to short piece of solid copper wire, and attach solid to screw terminal. Do not solder residential or commercial wiring.

Project wire, extension cords, thermostat, bell and automotive wire are not rated for residential or commercial wiring. Only wire maked 600 volt can be used for permanent household wiring.
Buy:
Southwire 600 volt stranded wire
Rolls of stranded wire
HOOK UP Wires

Protect wiring from damage
Use nipper instead of pliers or screwdriver for removing staples (and nails). Do not damage cable or wires inside cable.

-Code says: Cable SHALL BE secured without damage to the outer covering. NEC sec. 336-15
Buy
End cutting nippers at Amazon


Electrically insulated tools
When removing insulation from wire, do NOT score or put cuts on surface of copper wire. Doing so increases resistance and heat on wire and creates possible weak point.
Buy tools:
KLEIN TOOLS
Wire strippers at Amazon
Electric Wire Stripping Machine
Linesman pliers
Utility knife at Amazon
multimeter
Multimeters
Voltage is tested across two separate wires. Ohms or resistance is tested across both ends of same wire. Amperage is tested along one or two points on same wire.
Buy:
Analog multimeter
Multimeters at Amazon
Klein multimeter
Electric testers at Amazon
Clampmeter for testing amp flow on line

GFCI circuit breaker
A GFCI circuit breaker will protect all boxes on circuit.

Circuit must be grounded. Ground wire must be continuous and connected to each piece of equipment.

White wire on circuit breaker must be connected to Neutral busbar inside the breaker panel.

Buy
GFCI circuit breakers
Push down
single-pole breaker
1" wide Push down breaker
Plug-in breaker
Buy single-pole:
Choose from 15 to 60 amp
Eaton CL series
Siemens 15-60 amp

Single-pole tandem breaker
Tandem breakers
Push down
double-pole breaker
2" wide Push down breaker
Plug-in breakers
Buy double-pole:
Choose from 15 to 125 amp
Choose from 15 amp to 200 amp
Eaton CL series circuit breaker
Siemens circuit breaker
Double pole GFCI

GE 15136 timer
40 amp 120V-208V-240V-277V
Dip switches to select voltage
7-day programmable,
9 on 9 off set points, with countdown and random options3 month power outage back-up

Buy 24 hour or 7-day:
GE 15136/ 7 day/ 7 programs /40 amp/ outdoor metal box
DTU40 At Amazon
GE mechanical timer

If unavailable:
Option 1: Use DTU 40 / same features and wiring
Option 2: Use Open frame relay
How to wire open frame relay
Option 3: Use mechanical timer
Mechanical timers

Resources:
GE 15132 manual
How to wire GE 15136
More GE timers and manuals
Tork DTU water heater timer
Larger image
Permanent ON-OFF override

Buy 24 hour/ or 7-day
DTU40 At Amazon

Resources:
DTU40 instruction manual
Sell sheet with model numbers
DTU40 wiring
GM40 timer
GM40 series
GM40 AV series auto detects voltage
7-day and 24 hour
Buy
GM40AV 120-208-240-277V at Amazon
GM40AVQ w/ back-up battery at Amazon
GM40 24 hour at Amazon
GM40 7-day at Amazon
Resources:
Compare all box timers
GM40 wiring
GM40AV Manual
GM40AV sell sheet
Tork TU universal timer
Tork TU series
40 amp 120V-208V-240V-277V
Automatically detects voltage
24 hour 15 minute intervals
Buy:
Tork TU series DPDT/ 120-277V universal timer at Amazon
Tork P1104FM 240V SPDT with fireman switch at Amazon
Buy Tork DTU digital timer at Amazon

Manuals/ Resources:
Sell Sheet
TU wiring manual
TU instruction manual
woods wion contactor
Woods Wifi
30 amp Woods 50054 WiFi contactor
Auto detect voltage/ 120, 208, 240, 277 volt
WiOn contactor connects to app on phone
How to wire wifi
Buy
DEWENWILS brand wifi
Wifi power switch
WiOn contactor from Amazon
GE z-wave contactor

Resource:
How to wire WiOn for 120 volt and 240 volt
GE z-wave manual
Intermatic GM40AVE
GM40AVE digital
40 amp 120V-208V-240V-277V
Automatically detects voltage
7-day programmable, 20 on 20 off set points
Power outage backup
Buy:
GM40AVE  120-208-240-277Volt
GM40AVE at Intermatic

Manuals/Resources:
GM40AVE manual
GM40AVE sell sheet
FM1D 20 setpoint programming
FM2D 50 setpoint programming
Intermatic timers and manuals
GE 15136 timer
40 amp 120V-208V-240V-277V
Dip switches to select voltage
24 hour, 15 minute intervals

Buy 24 hour:
Tork TU timer/ same features/ same wiring
GE 15135 24-hour/ 40 amp/ outdoor box at Amazon

If unavailable: Replace with Tork TU timer
Option 1: Use Intermatic GM40 / same features and wiring
Option 2: Use Open frame relay
How to wire open frame relay
Option 3: Use mechanical 24-hour timer
Mechanical timers

Resources:
15207 Manual
Quick-start guide to wiring
More GE timers and manuals
GE 15207 wiring
Woods 59402 timer
Woods discontinued
Replace with Tork TU timer
Woods 59402
40 amp 120V-208V-240V-277V
Select voltage using jumpers
24 hour, 15 minute intervals

Buy 24 hour:
Woods 59402 timer

Resources:
59401 and 59402 manual
59402 sell sheet
More Woods timers
water heater timer
24 hour mechanical timers
Long lasting
Skip-a-day option
Repairable with widely available parts

Resources:
Intermatic 24 hour timers
Tork box timers

Compare all box timers
GE 15132 programmable water heater timer
See Close-up
15132
GE 15132 Timer
Timer safe for 1 residential water heater.
15136 Nema3R indoor-outdoor
Discontinued
Buy:
15136 with metal outdoor box at Amazon
GE 15132/ plastic outdoor box at Amazon
Resources:
GE 15136 manual (same as 15132 and 15132)

Step 1:
Turn power off.
Check rating plate on water heater, or motor for volts and watts.
Set dip switches before applying voltage
Remove clear insulator to access wiring.

Tork DTU water heater timer
Larger image
Substitute timer: wiring is identical to 15136
DTU40/ 120V; 208-240V; 277V/ Automatically detects input voltage/ random mode/ battery backup/ outdoor box
Tork 9000N Indoor/ outdoor plastic enclosure
120-240Volt/ 40 amp NO contacts/ 30 amp NC contacts
7 ON-OFF per 7-day week/ choose blocks of days or individual days/ or random function
Minimum set time 1 minute
Power outage backup
Can be wired to control 2 separate loads/ 3-phase loads/ etc
Buy DTU40:
DTU40 at Amazon
Resources:
GM40E timer module instructions/ pdf
Tork DT series sell sheet
Tork DTU40 timer instructions
Set dip switch before connecting power.

Manual says that incorrect dip-switch setting will damage timer.
dip switch Step 2: Dip switches

GE 15087 timer can be used for 120V or 240V water heaters > change dip switches and select voltage.

Water heater voltage is on label of each device. Match dip switches to voltage.

Resources:
Figure Volts Amps Watts
Basic 240V water heater circuit


Use cable connector
1/2" & 3/4" knockouts

Terminals: TIMER  NO  NC  COM  NO2  NC2  COM2
Step 4: Wiring features

Four basic features inside 15087

1. Dip switches
2. Screw terminals for clock
3. Screw terminals to contactors
4. Contactors/relays that handle on-off switching to water heater


Larger image
More ways to wire for 240Volt

240 Volt



Wiring diagram for 240V water heater. Both white and black wires are hot.
Power connects to clock, and to COM terminals

Use 10 gauge wire for 240V water heater

GE 15087 timer is housed in plastic box
Ground wire is not connected to box
Ground wire travels continuously from breaker box to water heater.


When using black-and-white wires for 240Volt, add tape to white wire.
This action will tell next electrician that white wire carries power

Larger image
More ways to wire for 240Volt

240 Volt


Different way to do same wiring shown in first image above using NO and COM terminals in reverse.

Why show this variation when manual does not?
SPDT timer with dip switches, and dry NO NC contacts can be wired many different ways.
There is no ez way to show all options.
Resource:
More ways to wire for 240Volt


Set dip switches BEFORE applying voltage to terminals.
Do not spark-test wires across terminals.
Wire GE timer for 120-240 voltsElement rated for 4500 watts @ 240Volt, will consume 25% or 1125 watts @ 120Volt

Timer toggles water heater between 120Volt and 240Volt

Use SPDT timer to change water heater between 120Volt and 240Volt

Use 120Volt at peak-electric price.
Water heater recovers slowly with 120Volt, and uses 1/4 power.

Use 240Volt when electric prices are lower, and faster recovery is needed.

Resources:
How to change water heater to 120Volts
Off-peak water heater options
9 ways to save with water heater
Install electric meter on water heater
Timer toggle between applainces
Larger image
Buy:
Dishwashers at Amazon
120-240Volts
Use Timer to toggle between appliances

240Volt circuit can be cut off by turning off one hot wire.
Put water heater on NC normally open terminal, so water heater is ON all the time, except when timer turns ON, and then circuit to dryer is activated.

Resources:
Same wiring applies to many timers including Intermatic GM40 & WHQ, Tork DTU40
Other timers can perform same operation such as Intermatic T1905 & T1975

How to wire 240Volt outlets
GE 15207 timer controls 2-speed pool pump
Always check pump voltage and wiring diagram located on nameplate
120-240Volts
GE 15000 series timers control 2-speed pump

Low speed is connected to NC terminal, and then pump operates continuously in low speed until timer turns ON.
When timer turns ON, High speed turns ON.
Diagram applies for both 120V and 240V 2-speed pool pumps.
Other timers can be used for 2-speed pool pump:
Resources:
Tork DTU40, GM40 timer, T106 timer, T1906 timer
Pump operates continuously. Install another timer on L2 Hot line to turn pump ON-OFF
Change water heater temperature using timer
Larger image
Change water heater temperature using GE 15207 timer
Same wiring applies to GE 15087- 15132 etc series timers
Applies to Tork DTU timer and Intermatic GM40 timer
and Intermatic WHQ series

120-240Volts
Use timer for two different temperatures on electric water heater.

Either upper thermostat and element have power or lower thermostat and element have power. But not both at same time.

Install ECO-protected thermostat for lower thermostat.
Both upper and lower parts of tank are ECO-protected from overheating
Rewire tank so upper and lower parts are separate.
Use GM40 timer to switch power between lower and upper parts of tank.

Normal operation, the lower thermostat and element receive power and keep tank at temperature set point. Upper thermostat and element have no power.
This is called 'redundant' water heater operation. This technique for heating tank more rapidly after cold water first enters tank.

When timer activates, power to lower part of tank turns OFF. Power to upper part of tank begins. Upper thermostat is set for higher temperature.
Since tank is at regular temperature, the higher setting means upper element will turn ON and begin heating tank to higher set point.

Use this technique to heat water very hot for laundry cycle.
Disadvantage: The lower part of tank will cool rapidly as new cold water enters tank, so this technique is good for making short-term batches of hot water.

How to wire thermostats
How electric water heaters work

120 Volt



Wiring diagram for 120V water heater. The black wire is hot, the white wire is neutral.

GE 15087 timer is housed in plastic box
Ground wire is not connected to box
Ground wire travels continuously from breaker box to water heater.
Wire GE15207 for under counter water heater

120 Volt


Timer wired to control under-counter water heater
Avoids having to run additional wire to power 1500 watt under-counter water heater.
Circuit uses same wire that powers dishwasher.
Either dishwasher or water heater can be used, but not both at same time.
Set dip switches for 120Volt
Resource:
How to install under-counter water heater
GE 15207 3-phase
Larger image

120-208-240 volt 3-phase

Example: High leg delta
Tork DTU 3-phase timer 120 or 208 or 240Volt
See more 3-phase
High leg delta
GE 15207 timer 277 volt 3-phase GE 15207 3-phase
Larger image

277-480 volt 3-phase

Wire GM40 controls 3-phase
Use 277V
480V contactor or 277V contactor
Fused disconnect required on 3-phase and timer wires
277-480 3-phase
How to wire 3-phase timer
See more 3-phase

Solid copper wire only
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.
See example image

Use wire connector    
Push on wire connectors
Use push-on wire connectors
3 wires/ or different gauge wires
Join wires with wire connector or push-on connector
Run jumper to screw terminal.
Buy:
Push on wire connectors
Red 3P connector (shown) for 10-14 gauge wire
Resource:
How to select and install wire connector
10-3-wire
10-3-wire  12 Ga
10 gauge or 12 gauge?
10 gauge is larger/ for 30 amp breaker. 12 gauge is smaller/ for 20 amp breaker
10 gauge wire can have black-white or black-red
12 gauge will have black and white wires

Buy short pieces 10 and 12 gauge wire at local box store
Compare with your wire.
Match color code and amp rating for wire
With 120 and 277 Volt circuits, white wire is always Neutral, and black is Hot
Hot wire is always switched on-off. Neutral wire remains connected without switching.
With 208 and 240 circuits, both wires are Hot, and both wires carry voltage.
Either Hot wire can be switched on-off. Or both Hot wires can be switched on-off.
Add black tape when white wire carries voltage (applies to 208 and 240V circuits)
CA3750
CA3750 has 5 knock-outs
1 on back, 1 on each side and 2 on bottom

Keep enclosure door closed
Fire safety
Always keep enclosure (box) cover closed
Romex connector Use Wire connectors, or conduit clamps to secure wire to enclosure
By code, all wire must be securely attached to enclosure to prevent wire pull-out.
Wires or conduit must be secured to structure, so there are no loose wires.
Wires inside the enclosure cannot lay over top of connection terminals.
Join all ground wires together and cover with wire connector.
Push ground wires down and away from connection terminals.
2T2500GA plastic outdoor enclosure has 5 knock outs for 1/2" and 3/4" Wire connectors 1 on back, 1 on each side and 2 on bottom
More Intermatic enclosures

Contactors/ relays
Type 1 and type 2 surge protection surge protection
Programmable timers

Woods timers
surge protection
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Tools and home improvement

Home and garden

Hayward pool
Pentair pool

Southwire electric
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Tools

DEWALT
Black and Decker
Stanley
SKIL
Makita
Porter-Cable
Bosch

Irwin Hand tools
Klein hand tools
Fluke electrical testing
Dremel hobby tools

Campbell Hausfeld air powered
Tekton automotive

Powerbuilt automotive
Saws and saw blades
box timers Resource:
Compare box timers
DPDT timers
Intermatic
Control water heater w/ Z-wave
Intermatic control centers Resource:
Intermatic control centers: and parts
Digital control centers and parts
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Subpanels
All control centers and parts
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programmable timer Resource:
Programmable timers
Countdown timers
Off delay timers
On delay timers
Timer modules
Din rail
Twin & one-shot
Woods
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Tork
Low voltage power packs Recirculation systems
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