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ST01C
timer controls 240Volt water heater |
30
amp breaker use 10 gauge /  Buy: 10-2 gauge/ 30 amp 10-3/ 30 amp Southwire electric tools |
Yellow
12 gauge 20 amp Yellow/ #12 gauge wire for 20 amp with ground 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 White/ #14 gauge wire for 15 amp with ground Buy: 14-2 gauge/ 15 amp 14-3/ 15 amp NMB is house wiring UF is underground |
 Buy: Armored cable |
 Southwire armored cable cutter Buy: Rolls of stranded wire |
Stranded wire  Buy: Rolls of stranded wire |
50-60
amp breaker use 6 gauge /  Buy: 6-2 wire Southwire electric tools NMB is house wiring UF is underground |
40-50
amp breaker use 8 gauge / Buy: 8-2 wire Southwire electric tools NMB is house wiring UF is underground |
  Copper ground wire 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 |
 Buy End cutting nippers at Amazon |
  Buy tools: Wire strippers at Amazon Linesman pliers Utility knife at Amazon |
 Buy: Multimeter Electrical testers |
 Timer has 3 wires plus green ground wire |
ST01C timer controls 240Volt water heater No Neutral wire needed Ground wire not shown Buy: Intermatic ST01c timer/ 1 year warranty ST01a almond Intermatic ST01K combination timer DPST contactor with 240V coil Fuseholders at Amazon Contactors Resources: See the whole project and materials list Fuseholder installation Contactors/ what they do Terminals/ how to install ST01 timer/ How to program ST01C More wiring for ST01C Same wiring applies to Intermatic Ei600 All Intermatic timers and manuals |
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 Buy: ST01 / 120-240 volt/ any load/ no neutral Intermatic ST01c timer Intermatic ST01 timer Contactors |
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ST01C timer controls 240Volt water heater Timer does not require neutral Battery operated Can control any voltage Must be fuse-protected 240Volt coil DPDT contactor See materials list and installation Contactor with 240Volt coil At Amazon mens zippered jacket |
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Buy:
fuseholder: Buy fuseholders ANL fuseholder Fuse blocks at Amazon Electrical terminals Din rail fuseholder 10 x 38 mm fuse Some fuseholders accept terminal connections, some have solder-only connections. Fuse block has screw terminals. |
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Buy fuseholder that accepts terminals Solder can melt with the flow of amperage Solder can only be used for structural wiring such as intercom, phone, doorbell etc Buy: fuseholder: Buy fuseholders ANL fuseholder Buy: Terminal kit at Amazon with crimp tool Electrical terminals at Amazon Blue 14-16 gauge female terminals 20 pcs at Amazon Yellow 12-10 gauge female terminal 16 pcs 360 pc assortment at Amazon |
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Reverse
dawn-dusk operation to dusk-dawn GE 15312 timer has astronomic function to turn Lights ON at dusk and OFF at Dawn. To reverse operation, connect timer red and blue wires. If you want dawn-to-dusk operation instead of dusk-to-dawn, then connect red wire to blue wire. This action will reverse timer operation. Contactor recommended for all motor loads Buy: Intermatic ST01c timer |
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Override ST01 timer program using air switch,
single-pole switch or another timer. This action reverses ST01 program, so OFF becomes ON, and ON becomes OFF Buy: Contactors |
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3-phase dawn-dusk timer Control 3-phase using ST01 timer Buy: HVAC contactors Inline fuse holders Din rail fuse holder |
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Buy fuseholder that accepts terminals or can be direct-wired Solder can melt with the flow of amperage Solder can only be used for structural wiring such as intercom, phone, doorbell etc Buy: fuseholder: Buy fuseholders ANL fuseholder Buy: Terminal kit at Amazon with crimp tool Electrical terminals at Amazon Blue 14-16 gauge female terminals 20 pcs at Amazon Yellow 12-10 gauge female terminal 16 pcs 360 pc assortment at Amazon |
| Basic contactor wiring: Trun off breaker so electricity is OFF. Use terminals to connect the smaller wires to line side Use 10-15 amp inline fuse on one of the two wires to protect timer and relay circuit from 50-60 amp air conditioner circuit. The fuse will protect entire length of circuit. Prevent loose connection and risk of fire: Do not put two different gauge wires under the screw plate on contactor. Never put stranded wire under screw plate. Buy: HVAC contactors Inline fuse holders Din rail fuse holder Resources: Relays and contactors |
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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 https://amzn.to/3eFRhPW 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: Contactor with 120Volt coil |
 ON
Delay/ Off 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... 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 How to wire off-delay timers |
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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 Resources: 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 |
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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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