delay timers
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How to wire On delay timer
Delay timer for motor or pump/ 120Volt to 240Volt
AH3 off delay timerST01 delay timer ON Delay with programmable timer
Illustration shows ON delay wiring.
On delay means the load turns ON after delay period expires. Load remains ON until power is off.
Example uses ST01 timer as switch. (Or use Ei600... same timer with 5-year warranty)

ST01 Timer can be set for dusk-dawn. Automatically turns lights ON at night, and off at dusk.
ST01 Timer automatically adjusts for seasonal changes.
ST01 Timer can be adjusted 20 minutes longer or shorter than actual dusk-dawn

However some folks want longer delay before lights turn ON at night
How it works:
ST01 Timer turns ON. AH3 timer receives power. Time delay countdown begins.
After delay period expires, light turns ON, and remains ON until ST01 timer turns OFF
Cycle repeats next time the ST01 timer turns ON.
AH3 timers at Amazon
Intermatic ST01 timer
Ei600 timer at Amazon
CR2 replacement battery at Amazon

More wiring diagrams/ How to wire AH3
Motor delay timer
For 120-240V cut blue jumper wire located on front of timer between terminals
Adjustments less than 30 seconds might not be possible
2" x 2" size
1.8 second delay
Start motor or pump with 1.8 second to 10 minute delay
Time delay begins when power is applied to input. After delay, load turns ON and stays ON until power is turned OFF.

Buy 120-240 Volt delay ON:
ICM 102 / 18-240VAC 1.5 amp load
ICM controls
Packard 102 at Amazon

Buy: contactors:
Packard contactor with 24Volt coil
120Volt coil At Amazon
240Volt coil At Amazon

ICM 102 delay ON timer manual .pdf
More contactors
2 motor delay timer
For 120-240V cut blue jumper wire located on front of timer between terminals
Adjustments less than 30 seconds might not be possible
Turn on 1 motor after another motor starts
Turn on pump after another pump starts
Turn on 1 motor before another motor
120Volt or 240Volt

In-line fuse protects on-delay timer

Load 1 Turns ON when switch or timer turns ON.
Load 2 turns ON after delay

Reason for this system might be to reduct initial load on circuit so motor do not pull starting amps at same time.
Another reason is that one pump feeds water to second pump. Second pump should not start until water arrives from first pump.
Elko delay timer Elko delay timer/ Multifunction
On-delay, off-delay, repeat cycle, delay on break, pulse generator, latching, single shot
Input voltage 12V - 240 volt (50-60 Hz)
Indicator lights for power and countdown
.1 seconds to 10 days
Terminal S is trigger switch for some functions, install additional switch on a wire that connects to both terminal A1 and S... when the S wire is switched on, it causes the function to begin, such as latching relay or single shot, neither function useful for the illustration shown on left, or required for ordinary on or off delay.
Caution, fuse required on hot line(s) as illustrated.

Elko delay timer
Migro delay timer
Migro relays and timers

CRM-93H   10-function
CRM-91H  10 function
CRM-82 two-function
Estimate cost of operation
Hard wire 120V or 240V or 12 VDC.
Connect to wires going to load. Meter will run whenever power is available.
Hour meter counts hours that load is receiving power
Reliable Intermatic industrial quality
100 hours 240 volt 1 Hp
1 Hp uses 8 amps @ 240V
100 hours x 240 volts x 8 amps = 192 Kwh

Buy from my affiliate links:
UWZ48E-240V AC hour meter at Amazon
Intermatic bezel to support UWZ hour meter
Intermatic ac hour meters at Amazon
240 volt hour meter
Intermatic GZ series 10-80 VDC hour meter
Intermatic FWZ53-24U
12 volt DC hour meters

UWZ series hour meter .pdf
Vibration hour meter Estimate cost of operation/ wireless
No wiring needed.
Hour meter works on vibration
Reliable Intermatic industrial quality
100 hours 240 volt 1 Hp
1 Hp uses 8 amps @ 240V
100 hours x 240 volts x 8 amps = 192 Kwh
Works for cars too

Buy from my affiliate links:
Vibration hour meter at Amazon

Vibration meter .pdf
Add smaller wire to larger wire

WeMo switch wiring
Larger image
How to wire WeMo switch
WeMo allows programming via smart phone
Do not use stranded wire under screw plates
Buy from my affiliate links:
WeMo switch
Contactor with 120 volt coil
6x6x4 Box to install contactor

WeMo switch and module wiring
Illustrations of contactor wiring
Select correct wire and breaker size
WeMo switch wiring
WeMo Control pump with cell phone using WeMo
If WeMo or Iris offers a delay option
WeMo programming resources are online
No subscription
WeMo plugs into ordinary 120volt outlet
Control WeMo using phone or tablet
Grundfos pump is 1/25 Hp
Buy from my associate links
WeMo at Amazon
Belkin WeMo at Amazon
Unlocked cell phone at Amazon
Flush mount hour meter works on vibration

Unlocked smartphone
Unlocked smartphone
How to install recirculation system
Vibration meter .pdf
Skylink remote control countdown timer
Skylink wireless countdown
Operate 120 volt remotely/ program or countdown
Skylink wireless programmable or countdown
Estimate 1/3 Hp
Grundfos pump is 1/25 Hp
120V 60 Hz/ 10 watt minimum/ 1500 watt
Operate as ON-OFF or Countdown device/ Up to 500 feet
15 minute - 60 minute countdown
Wireless wall mount transmitter TB-318 at Amazon
Wireless countdown receiver PA-318 at Amazon
Transmitter and receiver
PA-318 manual

ST01C timer controls 120Volt delay-off-timer
Activate off-delay timer using push button -or- using ST10 timer
Push button, or ST01, activates delay timer.
Push button gives momentary on-off to activate delay timer
When ST01 turns ON and then OFF, then delay timer activates
Delay timer turns Load ON
Delay timer begins countdown.
When countdown expires, delay timer turns Load Off
Buy from my affiliate links:
6A855 Solid State timer at Amazon
11-pin plug-in base at Amazon
Contactor with 120volt coil
ST01 battery-operated timer
6A855 Manual
More off-delay timers
off-delay timer for recirculation system Operate recirculation system remotely from 1-2-3+ different locations
How it works:
Do NOT connect voltage to bell wire going to push buttons
Buy delay timer and base
Connect 120volt Hot and Neutral wires to base as illustrated.
Buy thermostat or bell wire and connect to push buttons as shown
The push buttons receive no voltage or power... do not connect to power source.
Plug timer into base. Choose delay time from .05 seconds to 999 seconds
Push doorbell button. Activates timer.
Timer turns ON and begins countdown.
Pump turns ON and runs until countdown stops. Countdown is off-delay.
When countdown expires, timer turns OFF, pump turns OFF.
Delay timer rated 1/3 Hp.... recirculation pump rated 1/25 Hp

Buy project materials:
Example 50' thermostat bell wire at Amazon
6A855 Solid State timer at Amazon
11-pin plug-in base at Amazon
Push button plate Amazon
Other countdown timers
More off delay and pin timer illustrations
6A855 Manual
remote control countdown timer
Larger image
Remote control countdown timer
6A855 Solid State timer at Amazon
11-pin plug-in base at Amazon
General purpose relay
Woods 32555 at Amazon
GE at Amazon
Wireless remote controls at Amazon
Replacement A23 battery at Amazon

Select recirculation pump
See analog plug-in timers
See remote controls
Water heater recirculation system
How to wire off delay timer
Control motor with 2 switches
Larger image
Larger image 2
Control motor with 2 switches
Same wiring diagram applies to single-pole switch
Contactor with 240Volt coil

240Volt coil At Amazon

Start winding pulls more amps than switch can safely handle.
Over time, the switch will fail.
Contactors are rated for heavy amp loads, with expected life of millions of operations
Wire contactor use miniature relay instead of contactor. The wiring is not illustrated, so let me know if you want specific illustration.

Buy: contactors:
Packard contactor with 24Volt coil
120Volt coil At Amazon
240Volt coil At Amazon

12-2 gauge/ 20 amp
12-3/ 20 amp

10-2 gauge/ 30 amp
10-3/ 30 amp
NMB is house wiring
UF is underground
Match wire and breaker size
6x6x4 box

6x6x4 Box with cover
Metal box comes with knock-outs
Plastic box/ drill 3/4" for 1/2' knock out
6x6x4 metal enclosure
6x6x4 PVC plastic enclosure
2-Pole 40A resistive
Rated 1 million operations
Inrush 27 watts, 7 watt operation
120Volt coil At Amazon
240Volt coil At Amazon

Other contactors
Mars 2-pole and 3-pole
3-pole contactors
Read more about contactors
Decora wall-plates
Decora wall-plates

Buy from my associate links
Decora wall-plates
Decora wall-plates
Decora wall-plates


6X6X4 Metal box w/ Contactor

carlton 6x6x4 junction box
6x6x4 Plastic box
Buy 6x6x4 junction box
Plastic box and metal boxes
Available home center/ electric supply house/ or online

6x6x4 plastic box: no pre-drilled holes... must drill holes for Wire connections, 1/2" hole for fuseholder, 3/16" holes for bolts to hold contactor, plastic box does not need ground screw connected to box
Cantex 6x6x4 PVC plastic enclosure with cover at Amazon
Thomas and Betts 6x6x4 plastic with cover at Amazon
Bud industries 11x7x5 box without knockouts
6x6x4 Metal box: has knock-outs for 1/2 and 3/4" ... must drill 1/2" hole for fuseholder, bolt holes to hold contactor, threaded holes for 10-32 ground screw, metal box must be grounded.
Raco 6x6x4 metal pull box with cover and knock-outs
Raco 6x6x4 metal pull box with cover and knock-outs
RACO outdoor 6x6x4 box with bottom knockouts
Wiegmann 67x6x4 pull box with knockouts on 4 sides
Hoffman 6x6xx4 pull box with knockouts on 4 sides
6x8x4 metal box
Bud industries 6x8x4 box with hinged door
Bud industries boxes at Amazon

See more about boxes
fuseholderBusman fuse holder Buy inline fuseholder and ceramic fuse to protect timer from overload
Panel mount fuse holders at Amazon
Buy fuseholder at Amazon
Buy fuseholders at Amazon
30 amp fuseholder at Amazon
Ceramic fuses at Amazon

Read about fuseholders

Test for breaks in wire/ Test for voltage
Most appliance require 80% rated voltage to function correctly
Sperry multimeter
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

Basic house wiring

Non-contact voltage tester
Test for power without touching connectors
NEVER assume power is OFF

Sperry non contact tester
Electric testers at Amazon 
How to test electric power is off
wire connector assortment
Twist-on wire connector assortments
Do not reuse old connectors 

Connector assortment at Amazon
Connector assortment at Amazon

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
Silicone caulk
Weatherproof size 14 to 6 Amazon
Weatherproof size 22 to 8 Amazon

How to select and install twist-on wire connectors
Wire connector wrench
Wrench to apply wire connectors
Tighten connector 

Wire connector blaster
Twist connector wrenches at Amazon

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

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

Fire inside timer caused by stranded wire
Keep enclosure door closed at all times
Support the economy:
Buy water heaters  from my associate links:

50 gallon Gas water heaters at Amazon
40 gallon gas water heaters at Amazon
50 gallon Electric water heaters at Amazon
40 gallon electric water heaters at Amazon
Hybrid / heat pump/ water heaters at Amazon

How to install gas water heater
How to install electric water heater
Troubleshoot gas water heater
Troubleshoot electric water heater
Point of use water heaters
Troubleshoot Gas valves with manuals

Rheem electric thermostats
Icon gas valve

Install and troubleshoot garbage disposal Waste King disposal
How to wire tankless electric

Install point of use water heater
Titan tankless
Anode rods anode rods
Recirculation system

Tankless recirculation
Point of use water heater
Programmable timers

Woods timers
surge protection
Gas and electric water heaters Buy
Industrial electric

Sperry Instruments

Tools and home improvement

Home and garden

Hayward pool

Southwire electric
Barn door track
Curtain rods
Garage door parts
Shop cart
Metal table
Tork timers
Transfer switch
Smoke detector
Water detector
Carbon monoxide detector
Pool pump
AO Smith motor
Don't forget the appliance protection plan
box timers Resource:
Compare box timers
DPDT timers
ET series
Control water heater w/ Z-wave
Intermatic control centers Resource:
Intermatic control centers: and parts
Digital control centers and parts
Tork control centers and parts
All control centers and parts
programmable timer Resource:
Programmable timers
Countdown timers
Off delay timers
On delay timers
Timer modules
Din rail
Twin & one-shot
Low voltage power packs Recirculation systems
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