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How to wire off-delay timer How to wire AH3-3 timer |
![]() Multimeter Test for breaks in wire/ Test for voltage Most appliance require 80% rated voltage to function correctly Buy Analog multimeter Multimeters at Amazon Klein multimeter Electric testers at Amazon Clampmeter for testing amp flow on line 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 |
![]() 120 volt GFCI, outlet, receptacle that is rated 20 amp can be installed on 20 amp breaker only, but NOT on 15 amp breaker. Buy 15 amp GFCI 20 amp GFCI |
Buy Basic electric book Home plumbing/ electrical codes ![]() Or learn about basic household electricity... use and search my site/ Resource Safe electric wiring Basic house wiring |
![]() Use outlet tester to check for correct wiring on any 120 volt straight-blade outlet. Buy: Klein testers Outlet tester Circuit breaker finder Electric usage monitor |
![]() Twist-on wire connector assortmentsDo not reuse old connectorsTwist wire connector very tight. Pull wires to ensure they will not come loose. Cover all bare copper. Buy: Connector assortment at Amazon Connector assortment at Amazon Resource How to select and install twist-on wire connectors |
![]() Weatherproof wire connectorConnector cavity is full of siliconeBuilt-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 |
Connect wire to screw terminal Use only 600 volt solid copper wire. Do not use stranded wire or extension cord. Do not use solder anywhere on residential 120-240 volt wiring. Attach electric installation to structure. Tighten screws very tight against wire. ![]() Buy: NEC books Dewalt plumbing/ electrical codes Basic electric book National electric code guide/ illustrated Resources: How to twist wire How to select and install twist-on wire connectors |
![]() Operate outdoor toggle switch safely ... and easily Replaces outdoor cover. Install over top of ordinary toggle switch. Works with single-pole, double-pole, 3PST, 3-way, 4-way switches etc. Buy: Best choice: Cantex lever switch Outdoor lever switches at Amazon |
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![]() 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 |
![]() Use nipper instead of pliers or screwdriver for removing staples (and nails). Do not damage cable or wires inside cable. Code -Cable SHALL BE secured without damage to the outer covering. NEC sec. 336-15 Buy End cutting nippers at Amazon |
![]() ![]() ![]() When removing insulation from wire, do NOT score or put cuts on surface of copper wire. Doing so increases resistances on wire and creates weak point. Buy tools: Wire strippers at Amazon Linesman pliers Pro linesman plier Needle nose pliers End cutting nippers at Amazon |
![]() Weather resistant plastic box for outdoor extension cord connections, Christmas lights, outdoor power strip etc . Not for connecting wires with wire nutsŪ, or in-wall wiring, but can be used indoors to organize extension cords, power strips etc. Weather resistant is not weatherproof or watertight. Use enclosures rated IP65 and IP67 for waterproof. Extension cords cannot be used for permanent wiring. Buy: Large-medium-small electric cord box Socketbox Raintight enclosures Water-tight cord lock Resource: Enclosures and boxes |
![]() 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 Omron twin timers 24 volt twin timer Resource: How to wire twin timers How to wire one-shot timers |
![]() 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 watts Max 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. Do NOT solder end of stranded wire to make solid ... amperage will melt solder. Connect stranded wire to short jumper of solid copper wire and cover with twist on connector. 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 ![]() Buy from my affiliate links AH3 timers at Amazon st3pf relay Resources: Use off-delay to control recirculation pump Use off delay to control motors Fuseholders Omron H3CR sell sheet and wiring |
![]() 8-pin timer base Showing example SPDT pin timer wiring NC = Normally closed NO = Normally open |
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8-pin timer wiring/ assumes both
power voltage and output voltage are same Illustration shows typical 120Volt wiring.. Hot connects to terminal 7, and Neutral connect to terminal 2. Install jumper wire between 7 and 8 to put 120V to timer relay. When timer receives no power on terminals 7 and 2, then timer is OFF, then NC terminal 5 has power. Connect Load to terminal 5 and terminal 2. When timer receives power to terminals 7 and 2, then timer is ON, and NO terminal 6 has power, and terminal 5 has no power. Connect Load to terminal 6 and terminal 2. Complete circuit with neutrals at terminal 2 To use other terminals: Add jumper wire between 7 and 1 (or 8 and 1) Then connect load to terminals 4 or 3, with neutral connecting to terminal 2 |
![]() 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 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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![]() Same 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 restat delay If switch is turned off, then load remains off Buy: Panel mount fuse holders at Amazon Ceramic fuses at Amazon e2 fuseholder with platium plating ANL fuseholder and fuses Resources More about fuseholder |
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![]() NC 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 puch 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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![]() Illustration 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 occured 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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![]() NO (normally open) 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 platium 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-the-wall fans |
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![]() Remote control countdown timer Buy: 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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Remote
control countdown timer Estimate 1/3 Hp 120V 60 Hz/ 10 watt miminum/ 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
Delay 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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![]() 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... sme 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 tunrs 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 tim 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 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 |
Repeat On-of-off-delay/ Twin
timer or one-shot Twin timer works like ordinary delay timer. Turning load on or off after delay period The difference is the twin timer can be set to repeat the on-off-on-off-on-off cycle indefinitely until power is disconnected. Example: blinking store light, that is on for 4 seconds, off for a second, and then back on for 4 seconds |
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![]() How to wire twin timer 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 countup 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. Rudoph's nose will blink on and off as long as power is applied to red nose and timer. Buy: Twin timers at Amazon |
![]() How to wire photoeye so it turns off 4 hours later Light turns on normally at dusk, then turns off after preset time expires. One shot (on or off delay) - Set mode for one-shot: Apply power to timer. Press MD for 3 seconds. Press MD to choose settings: minute, second, hour. When t,nod appears, select the 4 dashes, then press and hold MD button for 3 seconds to exit Mode. Once you exit Mode, press RES button to set Time A and Time B. To set times, the Lock mode must be OFF. Once you exit Mode, press RES button to set time A and then press MD to set Time B. If seconds are chosen for time period A, then time period B must also be seconds. 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 24 volt twin timer Omron twin timers Sestos relay timer Migro assorted timer Resource: Twin timer manual Omron twin timer manual 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 breker 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 piect 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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