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Recirculation off delay 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 |
 Skylink wireless countdown  |
Skylink
wireless countdown 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 |
| Control recirculation pump using One Shot timer | |
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Choose Twin (cycle) timer or One
shot
timer mode Input voltage from 100-240 volt. Some models, 12-24 volt AC-DC input. Choose mode between One shot or Repeat-cycle. Timer has dry NO NC terminals, so you can connect any voltage to switch terminals.  Set
Repeat
cycle or One shot ModeTo set One Shot (also called: on delay, off delay, or countdown ... where a load turns on for set period of time and then turns off until timer is reset) - 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. 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. One shot mode is either On delay or Off delay depending how timer is wired. After the time period expires, the load turns OFF or ON and remains ON or OFF until you reset by momentarily connecting and then disconnecting terminals 4 and 3 with a Normally open push button (like a doorbell button), or timer, home automation, momentary switch etc... or reset timer by disconnecting and reconnecting power to timer. To set Repeat cycle (this is for a blinking application on-off-on- ... or a repeating either-or application like christmas display blinking red-green-red-green etc until power is disconnected) - Apply power to timer. Press MD for 3 seconds. Press MD to chose settings: minute, second, hour. When t,nod appears, select the rectangle with dashes, then press and hold MD button for 3 seconds to exit Mode. 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. For example a car alarm is a cycle or twin timer ... honk-honk-honk indefinitely until power is cut. Christmas displays, and blinking store lights etc use twin timer in repeat cycle mode. Timer starts when it receives power and stops when power is off. Then it restarts when power resumes. For example you can set the repeat cycle to turn on for 10 minutes and off for 99 minutes. Mode A would be 10 minutes, Mode B would be 99 minutes. Or ... turn on for 10 minutes and then turn on another circuit for 99 minutes. |
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Load Max rated load on the timer is 10 amp. Using a relay will preserve life of timer since motor start-up pulls surge of amps through terminals 8-7 on the one-shot timer. How it works: Set twin timer to one shot mode ... instructions shown in section above. Connect 120 or 240 volt AC power to terminals 10-9. Connect other wires as shown. Off delay uses terminals 8-7 as shown (or 11-12) ... while on delay would use 7-6. Push doorbell button, or momentary toggle switch ... this will start the inkbird one-shot timer timer (do not energize the doorbell wires on start switch circuit with any voltage). Timer turns ON and begins countdown. Timer terminals 7 and 8 turn ON. This causes the pump to turn on ... or causes the relay or contactor coil to energize. Circuit to recirculation pump turns ON. When countdown expires, terminals 7 and 8 turn OFF, pump turns off, or relay coil or contactor coil is de-energized and pump turns OFF. Twin timer that is set to one-shot mode, and powered by 120-240V, will operate .9 seconds to 99 hours. So the pump can run any length of time: for example 1 hour or 21 minites etc. Do not connect power to terminals 1 thru 5. How to wire twin timer Buy: Project materials: Twin timers at Amazon Sestos twin timer Omron DH48S twin timer Normally open Push button Example 50' thermostat wire Buy 1EJG9 relay at Amazon power relay 24v coil 30 amp enclosed power relay 25 amp Omron enclosed power relay More off delay and pin timer illustrations |
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Always use
contactor (or relay) to energize heavy amp load Why? So high amperage (and heat) does not flow through the timer ... instead the only amperage flowing through the relay located at terminals 8-7 will be to energize the 27 watt coil on contactor. Using a contactor will extend life of timer, and protect overall integrity of circuit. Suggest using a line fuse for power going to 9, and then jumper a wire from 9 to 8. This will ensure timer cannot be exposed to high amperage Buy: Twin timers at Amazon Sestos twin timer Omron DH48S twin timer Contactor with 120Volt coil |
| Advantage of this one-shot timer:
the reset does not require power to be turned
off then back on, wires going to remote locations carry no voltage, and
you can have 2-3-4-5 etc remote locations. Other advantages: hardwire is cheaper, more reliable and long lasting than home automation, and the design is modular for easy part replacement. |
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 Momentary contact switch This is best choice since it can fit into electric switch box that is mounted in wall. Resource: How to install old work box Terminals 3-4 on the twin timer are for Reset. When terminals 3 and 4 are momentarily touched together using a momentary switch or a push button, it starts the recirculation pump. When the programmed time expires, the recirculation pump turns off, and the timer waits until the Reset is activated again. Do not apply power to terminals 3-4. For the reset to work, terminals 3 and 4 need to be joined or touched together and then disconnected from each other. If an ordinary on-off toggle switch is used instead of a momentary switch, the the toggle must be turned on and then off for the Reset to take place. Buy: Leviton momentary contact switch Momentary contact switches |
 Buy from my affiliate links Normally open push buttons Normally open or monetary on push button Fuseholders at Amazon |
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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 How to wire AH3 delay timer Buy: 6A855 Solid State timer at Amazon 11-pin plug-in base at Amazon Contactor with 120volt coil ST01 battery-operated timer Resources: 6A855 Manual More off-delay timers |
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Remote
control countdown timer Buy: AH3 timer 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 Resources: Select recirculation pump See analog plug-in timers See remote controls Water heater recirculation system |
  Control water heater with WeMo Buy from my associate links: WeMo switch WeMo at Amazon Belkin WeMo at Amazon |
 6x6x4 Box with cover Metal box comes with knock-outs Plastic box/ drill 3/4" for 1/2' knock out Buy from my associate links 6x6x4 metal enclosure 6x6x4 PVC plastic enclosure\ Step drill bit for drilling into PVC box |
 Contactors 2-Pole 40A resistive Rated 1 million operations Inrush 27 watts, 7 watt operation Buy from my associate links 120Volt coil At Amazon 240Volt coil At Amazon Other contactors Mars 2-pole and 3-pole 3-pole contactors Resources: Read more about contactors |
Wire less
transmitter TC-318 Skylink At Amazon 3-button remote control transmitter TC-318-3 At Amazon Wireless wall mount transmitter TB-318 At Amazon Wireless on-off receiver MR-318 hardwire 300 watt At Amazon Wireless on-off receiver MR-318 plug-in 1500 watt At Amazon |
| 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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Buy Electronic parts Industrial supplies 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 |
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Resource: Compare box timers DPDT timers Intermatic Control water heater w/ Z-wave |
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Resource: Intermatic control centers: and parts Digital control centers and parts Tork control centers and parts Subpanels All control centers and parts Enclosures |
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Resource: Programmable timers Countdown timers Off delay timers On delay timers Timer modules Din rail Twin & one-shot Woods Intermatic Tork |
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Recirculation systems |
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