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See step-by-step how to wire contactor See basic water heater circuit How to install Old Work Box Compare 16 electric and 2 gas  water heater timers Do-it-yourself
2014

How to wire water heater with switches & timers

water heater single pole circuit
See larger

Control water heater with 15-20 amp switches


Do not connect 15 or 20 amp switches directly to 240V water heater


Resources
See inside box with contactor
Step-by-step installation of contactor
Figure volts-amps-watts for your water heater

See 3-way timer circuit

See 3-way
switch circuit

Water heater timer circuit
See close-up of individual Timer wiring

Programmable ST01 and Ei600 single-pole or 3-way

Timer mechanism is powered by small battery These timers work for applications up to 100 feet away.

Intermatic ST01C & Ei600
Timer wiring



Do not connect these switches directly to 240V water heater
See inside box with contactor
Step-by-step installation of contactor
Figure volts-amps-watts for your water heater


Larger image

Leviton 6124 programmable timers are powered by the electric circuit so they work at any distance


Compare all Programmable timers
6124 at Leviton

.pdf instruction manual
EZ instruction manual



Do not connect 15Amp 6124 timer directly to 240V water heater
See inside box with contactor
Step-by-step how to wire contactor

countdown water heater timer circuit
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Countdown timers are powered by the circuit so they work any distance.

10-20 minutes to wash up
20-30 minutes to shower
40-60 minutes for bath
Compare countdown timers
Close-up Timer wiring



Do not connect 15A countdown timers directly to 240V water heater
See inside box with contactor
Step-by-step how to wire contactor

Larger image

Programmable timers are powered by the circuit

Connect timer black to black hot wire arriving from fuseholder
Connect timer red wire to white wire that connects to contacor coil
Connect timer white wire and timer green wire to bare copper wire

programmable timer wiring
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Wiring illustration applies to any programmable or countdown timer with neutral wire

Same instructions shown above:

Black Hot from fuseholder connects to Timer Black
White wire connecting to one side of contactor connects to Timer Red wire (or blue wire)
Timer White and Timer Green connect to bare ground wire

water heater 30 amp switch
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240V water heater can be controlled directly using 30-amp switches

Illustration for 30-amp 3-way circuit

Note: 240V circuit has 2 hot wires <> putting a switch on 1 hot wire will work

Buy:
Leviton 3033-2 3-way switch at Amazon
Rated 25 amps, max 5500 watt water heater
5500 Watt elements draw 23 Amps
4500 Watt elements draw 19 Amps

Resource:
Figure volts amps watts for water heater
Read label on water heater


water heater switch
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240V water heater can be controlled directly with a 30-amp single-pole switch

Look for green colored 30 amp switch
Turning off one hot wire to 208-240V single phase water heater will work. Internal thermostat wiring inside water heater also turns off one hot wire.

Buy:
Cooper 3032 switch at Amazon
Leviton 3032 30 amp switch at Amazon
Leviton 30 amp switch at Amazon
30 amp switch/ maximum 25 amps
5500 Watt elements draw 23 Amps
4500 Watt elements draw 19 Amps
Resource:
Figure volts amps watts for water heater
Read label on water heater

How to wire thermostats
Remote control water heater
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Remote control water heater

Control any amp water heater using RC615 120Volt receiver and RC639 transmitter.
Transmitter turns ON receiver. Receiver closes circuit on contactor. Contactor sends power to any watt water heater.
Illustrated is ordinay 3500 watt- 5500 watt residential non-simultaneous water heater, 30 amp breaker and 10 gauge wire. With 14 gauge wire running to transmitter.

See materials list

Up to 100 feet away
Manuals:
RC939 transmitter manual
Remote receiver manual
Buy:
RC939 3-channel radio transmitter at Amazon
RC613 series 120Volt receiver at Amazon

Additional links
 EJ500 Utilitec Tork ST01C  ST01C UPM Aube T1032Aube Intermatic EI500Intermatic
    Water heater GE  Leviton Hagar Gardena T1030  Gardena Brinks timer Brinks
Westek TE06WHB Woods

Power pack

Timex
 Countdown
Westinghouse timers
Westinghouse
Sylvania

Omron
 Dayton Westek timers
Westek

Power strips
3-phase timer
3-phase timer
Diehl timers
Diehl timers
Woods 49028
Outdoor timers

Troubleshoot Household electricity

Figure volts amps watts for electric water heater
How to wire tankless electric
How to change water heater temperature using timer
How to change water heater from 240Volt to 120Volt
How to wire thermostats
How to wire water heater for off peak operation

How to twist wire
How to wire Cooper 277
How to wire combo switch-outlet
How to replace 3-speed fan switch

How to wire 3-way switches
How to wire 4-way switches
How to wire TM811 and TM8111 switches
How to wire wall timers
How to wire box timers
How to wire Dayton off-delay timer
How to wire pin timers

How to wire and troubleshoot photo eyes
How to wire switches

Troubleshoot Malibu outdoor lights
Terminals
Select and install wire nuts
Select wire size

Replace breaker
Install subpanel

Electrical formulas
Electricians forum
How to wire GFCI
How to wire GFCI combo

Basic water heater circuit
How to wire water heater for 120Volt
Install old work box

How to drop wire from attic
Romex connector

How to wire 240volt outlets
How to install 3-phase timer
How to wire 3-phase outlets
How to wire 3-phase surge protector
What is 3-phase

How to wire whole house surge protector
How to wire under-counter water heater

See inside main breaker box
Fuseholder
Contactors
How to solder wires
Whole house surge protector
3-phase surge protection
Circuit breakers

Difference between 120 volt and 240 Volt
Difference between 50Hz and 60Hz
How to install electric meter on water heater
How to wire water heater thermostat
How to wire water heater with switches and timers

6x6x4 Enclosures
Intermatic timer enclosures
Gas and electric water heaters 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
Troubleshoot gas water heater
Troubleshoot electric water heater

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