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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
armored cable
Buy:
Armored cable
Southwire armored cable cutter
Southwire armored cable cutter
Buy:
Rolls of stranded wire

Stranded wire
stranded wire
Buy:
Rolls of stranded wire
50-60 amp breaker use 6 gauge /
6-2 wire
Buy:
6-2 wire
Southwire electric tools
NMB is house wiring
UF is underground
40-50 amp breaker use 8 gauge /
6-2 wire
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
multimeter
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Multimeter
Electrical testers
ST01C timer controls 240Volt water heater
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
st01 timer
Buy: ST01 /
120-240 volt/ any load/ no neutral
Intermatic ST01c timer
Intermatic ST01 timer
Contactors
ST01C timer controls 240Volt water heater
Larger image
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




   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.

Busman fuseholder
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
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
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

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Contactors
3-phase astronomic timer 3-phase dawn-dusk timer

Control 3-phase using ST01 timer

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HVAC contactors
Inline fuse holders
Din rail fuse holder
Busman fuseholder
Buy fuseholder that accepts terminals or can be direct-wired

Solder can melt with the flow of amperage
surface mount fuseholder
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
recirculation off delay timer
Larger image


recirculation off delay timerLarger image
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
off-delay timer for recirculation system
Larger image
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
ST01 delay timerON Delay/ Off delay
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
How to wire off-delay timers
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Hybrid / heat pump/ water heaters at Amazon

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How to install electric water heater
Troubleshoot gas water heater
Troubleshoot electric water heater
Point of use water heaters
Resources:
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Icon gas valve

How to replace water heater element Waste King disposal
How to wire tankless electric


Install point of use water heater
Titan tankless

Contactors/ relays
Install and troubleshoot garbage disposal Waste King disposal
Programmable timers

Woods timers
surge protection
Anode rods anode rods
Recirculation system

Tankless recirculation
Point of use water heater
Type 1 and type 2 surge protection surge protection
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Industrial electric

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
box timers Resource:
Compare box timers
DPDT timers
Intermatic
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
Subpanels
All control centers and parts
Enclosures
programmable timer Resource:
Programmable timers
Countdown timers
Off delay timers
On delay timers
Timer modules
Din rail
Twin & one-shot
Woods
Intermatic
Tork
Low voltage power packs Recirculation systems
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