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How to wire AH3-3 timer
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How to wire off-delay timer How to wire AH3-3 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  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  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 |
 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 |
 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 |
Push-on wire connectors in place of twist-on connectorsBuy:Push on wire connectors Amazon Red 3P connector for 10-14 gauge wire Lever connectors for stranded wire at Amazon 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 |
 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 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 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 |
 AH3-3 delay timer and base 12-24-120-240 volt off delay timer/ 0-60 minutes Buy: 120 volt AH3-3 at Amazon Resources: How to wire AH3-3 timer How to wire H3CR timer |
 ICM 102 on-delay timer 0 Hp Must use contactor 24/ 120-240 volt AC .03-10 minutes Buy: ICM 102 Dayton off delay timers Resource: Use off delay to control motors |
 Off-delay timer/ 19-240 volt AC 15-300 seconds Buy Dayton off delay timers Resource: How to wire Dayton off delay timer |
 12-24-120-240 volt digital twin timer 1 second to 99 minutes Buy Uxcell DH48S-S twin timer Resource: DH48S twin timer manual Override air conditioner with timer |
 12-24-120-240 volt digital off delay/ twin timer or one shot timer .01 second to 99.99 hours Buy: Twin timers at Amazon Sestos twin timer Omron DH48S twin timer Resource: How to wire twin timers How to wire one-shot timers |
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Timer coil voltage 120V AC. Contacts rated 3 amp at 240 Volt -or- 6 amp at 120 Volt  Volts
x amps = watts/ 6 amp x 120 volt = 720 wattsMax 1/4 HP: bath fans are usually 1/6 Hp or 1/3 Hp. Recirculation pumps 1/25 Hp. 1/3 Hp attic fans are probably to large amp draw for this timer to operate long-term. For long term, keep load amp draw smaller than load rating... or connect timer to contactor |
AH3-3
timer
Can be used as relay, ON-delay, OFF delay, or all 3 at same time. 0-60 minute settings are approximate... experiment to fine tune setting. 8-pin base included with 8 screw terminals. Remove timer from base to attach wires. Recommend tightening screw plates very tight against wire, especially if using stranded wire. Stranded wire can become solid wire by adding solder. Solid wire is not fire hazard. Stranded wire is greater fire hazard when under screw plate. Size: 2-1/2" tall with base included x 1-5/8" x 2" 120 volt off delay timer/ Contacts rate 120-208-240 Volt Rated for all loads incandescent (Tungsten), LED, CFL, resistive, inductive etc Rated 3 amp @ 240 volt -or- 6 amp @ 120 volt/ Up to 1/4 Hp @ 120 Volt 120 volts x 6 amps = 720 watt. Bath fans are OK at 1/6 Hp/ Attic fans can run 1/3 to 1/2 Hp... suggest use contactor to carry load Recirculation pumps are 1/25 Hp and delay timer works fine. Buy from my affiliate links AH3 timers at Amazon Resources: Use off-delay to control recirculation pump Use off delay to control motors Fuseholders Omron H3CR sell sheet and wiring |
Off
delay/ 120 voltOff delay means the load turns ON immediately, and then load turns off after delay time expires. 3-way switch is convenient Any switch position will start the delay Click switch up starts delay... click switch down starts delay Load turns off after delay period expires Why the 3-way switch diagram works... because the switch is ON full time. When the timer receives power... the load turns ON until delay period expires... but timer is still receiving power. If you temporarily stop power from going to timer, by clicking the 3-way switch to another position, then the timer resets, the light turns ON again until the delay period expires. Load remains OFF until power is stopped and started again. If you use single-pole switch... then the switch must be turned off and then back on to restart delay. If single-pole switch is turned off, then load remains off |
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Off
delay/ 120 volt/ variantSame result as above... different wiring. This design lets you run smaller wire to switch... for example 18 gauge lamp cord. Smaller wire allows easier wiring going to remote switch. Add line fuse to if you are using smaller wire Off delay means the load turns ON immediately, and then load turns off after delay time expires. 3-way switch is convenient Any switch position will start the delay Click switch up starts delay... click switch down starts delay Load turns off after delay period expires If you use single-pole switch... then the switch must be turned off and then back on to restart delay If switch is turned off, then load remains off Buy: Panel mount fuse holders at Amazon Ceramic fuses at Amazon e2 fuseholder with platinum plating ANL fuseholder and fuses Resources More about fuseholder |
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Off
delay/ NC push buttons added to circuitNC means normally closed... or the power is ON until button is pushed Compare: doorbell button is NO ... or power is off until button pushed Add as many NC push buttons as desired for remote operation As long as each push button is functioning correctly, the circuit works fine. Why it works... Power is ON continually at timer. When power is interrupted, and then restarted, the timer turns load ON and delay period starts. When delay period expires, the load turns OFF. Power remains On at the timer When push button is pushed again, the power is temporarily stopped to timer, and the cycle repeats Buy from my affiliate links: Normally closed push button switch at Amazon AH3-3 at Amazon |
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Off
delay/ 120 volt/ same as variant aboveIllustration shows 18 gauge wire going to remote switch Fuse and fuseholder are used to protect 18 gauge wire from overload. Why is the fuse required? Assume 120 Volt Hot that powers circuit is connected to 20 amp breaker. 18 gauge wire is not rated for 20 amp breaker. Larger 12 gauge wire is used with 20 amp breaker If a short circuit occurred somewhere along the 18 gauge wire, then the full 20 amps would pour into the small wire. This would cause wire to overheat. Overheated wire will melt and cause fire. To prevent fire and overheating hazard, add 5-10 amp inline fuse. The fuse can be installed anywhere along the 18 gauge wire, and will protect full length of wire. Diagram shows ordinary rocker switch. Use 3-way switch for easiest installation. Read descriptions above about 3-way switch. |
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 AH3
off delay timer wiring with push buttonNo switch is used... only NC push button switches are present Add a many NC push buttons as desired Locate push buttons in each bathroom... press button and recirculation pump starts Hot water immediately circulates toward bathroom When delay period ends, recirculation pump turns OFF The power is ON at timer. When Normally Closed NC button is pushed, the power to timer stops momentarily. Power resumes as soon as button is released, the timer delay period begins, and load turns ON. Once delay period expires, light turns OFF. Power is still ON at timer. Buy from my affiliate links: Normally closed push button switch at Amazon AH3-3 at Amazon Panel mount fuse holders at Amazon Fuse blocks at Amazon Ceramic fuses at Amazon E2 fuseholder with platinum plating ANL fuses |
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 AH3
off delay
Wall fan turns OFF after boiler turns OFF Use same design to provide air to Heat pump water heater Additional general purpose relay with NO NC contacts needed. Choose coil voltage that can be controlled by boiler... for example 24 VAC etc Boiler turns on.... relay turns ON Fan turns ON Boiler turns OFF... relay turns OFF Delay countdown begins Fan continues to run Fan turns OFF when countdown ends Buy from my affiliate links: General purpose relay AH3-3 at Amazon Through wall fans   |
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Larger image Remote
control countdown timerBuy: 120 volt AH3-3 with base at Amazon 6A855 Solid State delay timer at Amazon 11-pin plug-in base at Amazon Woods 32555 at Amazon GE remote at Amazon Wireless remote controls at Amazon Replacement A23 battery at Amazon Select recirculation pump Resources: How to wire AH3-3 timer See analog plug-in timers See remote controls Water heater recirculation system |
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 Skylink
wireless countdownRemote control countdown timer Estimate 1/3 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 Buy: Wireless wall mount transmitter TB-318 at Amazon Wireless countdown receiver PA-318 at Amazon Transmitter and receiver Resource: PA-318 manual |
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 ON
DelayIllustration 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. Buy: Intermatic ST01 timer< Ei600 timer at Amazon CR2 replacement battery at Amazon Resource: Intermatic ST01 timer and manual How to wire and program ST01 timer |
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| On
delay means. When power
is applied to terminals 2 and 7, the delay countdown begins. After the delay period expires, then load turns on and remains on as long as terminals 2 and 7 have power |
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 ON Delay Move single-pole switch to ON position and shop light turns ON Delay begins When delay period expires, the buzzer turns ON Buzzer remains ON, until switch is moved to OFF position |
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Add delay timer to photoeye
circuit How to wire photoeye so it turns off 4 hours later Light turns on normally at dusk, then turns off after preset time expires. Set the twin timer to the exact minute, second or hour. Delay timer activates when photeye turns ON, and light turns on normally. When delay period expires, the light turns off, and timer resets to zero,. Timer and light remain OFF until photoeye activates the circuit again next night. Illustration shows twin timer timer. Also pictured below. Buy: Twin timers at Amazon Sestos twin timer Omron DH48S twin timer Resource: Twin timer manual Omron twin timer manual Resource: How to wire twin and one-shot timers |
 Repeated
ON
Delay using digital twin timerHow to wire twin timer has two time periods that turn on-off indefinitely. Each time period can be same or different. You set time period for mode A and then set time period for mode B Time period ranges from .01 to 99.99 seconds/ or .01 to 99.99 hours. If seconds are chosen for time period A, then time period B must also be seconds. Suppose you want light to turn on with switch, and want a buzzer to sound 20 minutes later. Then you want buzzer to turn OFF after 30 seconds. Then you want buzzer to sound again 20 minutes later... and then turn OFF after 30 seconds. Set twin timer for hours. Mode A is set for 00.30 and Mode B is set for 00.03 Operation sequence: Move single-pole switch to ON position and shop light turns ON and remains ON until switch is turned OFF. First delay begins for 20 minutes. When delay period expires, the buzzer turns ON for 30 seconds. Second delay ends after 30 seconds and Buzzer turns OFF. First delay period begins again With a twin timer, the sequence keeps repeating until light switch is turned OFF. Buy: Twin timers at Amazon |
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Digital
twin timer/ panel mount PV shows the time left in the count up for Mode B... so there is .78 seconds left before it switches to Mode A SV shows 2.99 ... which is the set time I choose for Mode B When 2.99 seconds ends, Mode A set time will display. Image shows the Inkbird twin timer. Use this timer to control red nose on Rudolph reindeer. Set Mode A to 30 seconds and Mode B for 2 seconds. Rudolph's nose will blink on and off as long as power is applied to red nose and timer. Buy: Twin timers at Amazon Resource: How to wire twin and one-shot timers |
| 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. 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 |
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 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 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 can be used as a grounded connection, and will protect wires from damage. Metal can be energized from an insulation failure. Non metallic flexible cables must carry ground wire, but does not have hazard of short circuit causing injury from shock. 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: Armored cable Southwire armored cable cutter Non-metallic flexible conduit Power whip Pull boxes |
Electrical tools must be insulated. Always best to disconnect power, but issues of insulation failure, lack of proper grounding, lack of GFCI, out-of-code wiring, generator operating without transfer switch, and other problems pose a risk to anyone working on electric power. Buy: Electrician tools kits Klein tools Tools kits |
 12 ga Stranded 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. Buy: Rolls of stranded wire |
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 resistances and heat on wire and creates possible weak point. Buy tools: Wire strippers at Amazon Linesman pliers Utility knife at Amazon |
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 |
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Spring-wound
timer will fit into ordinary switch box ... the LY2 relay with
base is about 2-5/8" tall x 2-5/8" long x 7/8" wide ... so
spring
timer and relay will fit inside a double wide /// deep /// switch box
... measure first. Buy: Spring-wound countdown timers Intermatic FD timer at Amazon Intermatic timer and replacement knob SPDT timer that can be used for 3-way see sell sheet for SPDT model numbers
DPST
timer for two loadssee sell sheet for DPST model
numbers
Omron
LY2 / Choose
120Volt coil30 Amp relay Uxcell relay Magnecraft w199 relays Siemens power relays Schneider W199 relay NTE open frame relays Option: You can use the relay without the base ... so it is smaller ... but you have to connect wires with crimp terminals. Use blue terminals for 14 ga wire... yellow for 12-10 ga wire. Buy: Terminal kit Blue for 16-14 wire Yellow for 12-10 wire Resource: Terminals |
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