Search waterheatertimer.org / all results
Search using Find button  

 Tweet button  
How to wire water heater with 2 switches
water heater 3-way switch
See larger
Control water heater with 3-way switches

Buy 3-way switches:
3-way switches at Amazon

Resource:
See step-by-step installation of contactor
Figure volts-amps-watts for your water heater
How to wire switches


Do not connect 15-20 amp switches directly to 240V water heater. Amp rating shows on each switch

control water heater with 3-way switches
Larger image
Control water heater with two 15-20 amp 3-way switches (same as above)
Buy 3-way switches:
3-way switches at Amazon

Contactor with 120Volt coil At Amazon
Contactor with 240Volt coil At Amazon

Resource:

See step-by-step installation of contactor
Contactors


Water heater 3-way timer
See Larger
3-way switch and 3-way timer
Intermatic Ei600 and St01C are 3-way timers
For applications up to 100 feet away

Timer and switch control contactor
Contactor turns heavy-amp load on-off

Buy:
3-way switches at Amazon
Intermatic ST01 timer at Amazon

Resource:
Intermatic timers: ST01C & Ei600
Intermatic timers and manuals
More wiring for ST01C + ST01C programming

How to find Hot wire
See step-by-step installation of contactor
Figure volts-amps-watts for your water heater


Do not connect these switches & timers directly to 240V water heater
ST01 timer
Red-Blue-Black-green wires
LED display is not illuminated
Other uses for ST01 timer:
Resource:
Programmable or dawn-dusk or dusk-dawn, any voltage or no voltage
ST01 timer controls water heater or any 240 volt load
Reverse ST01 using Intermatic air switch
Intermatic air switches
Use ST01C for 4-way timer
ST01 24 volt DC photoeye
Convert single-pole switch into 3-way switch using ST01/
How to add a switch   
How to add 3-way switch
24 volt programmable timer

water heater 30 amp switch
See larger
240V water heater can be controlled directly using 30-amp switches
Illustration for 30-amp 3-way circuit
Note: 240V circuit can be controlled by turning off 1 hot wire

Buy:
Leviton 3-way 30 amp switch
Leviton 3033 at Amazon
30 amp 3-way switches at Amazon
30 amp switches at Amazon

Resources
Twisting wires
wire connector basics

Rated 25 amps, max 5500 watt water heater
5500 Watt elements draw 23 Amps
4500 Watt elements draw 19 Amps
Figure volts amps watts for water heater
Read label on water heater



water heater switch
See larger
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
Resources
Figure volts amps watts for water heater
Read label on water heater

How to wire thermostats
control water heater with switch 240V water heater can be controlled directly with a 30-amp double-pole switch
Rated 25 amp
Turn off both Hot wires.
Not necessary, since turning off 1 hot wire works fine. Read above

Buy double pole 30 amp switches:
Leviton 3032-2w double pole 30 amp at Amazon
Leviton MS302-DS 30 amp double-pole switch at Amazon
2-pole 30 amp non-fusable safety switch/ power cut-off
30 amp switches at Amazon


Resources
Twisting wires
wire connector basics
30 amp DPDT switch

For certainty, always Test switch terminals using continuity tester before wiring.
24 amp safe maximum
Practical wiring diagram
Wire diagram
Toggle water heater between 120Volt and 240Volt
Max 4500 watt non-simultaneous water heater
Use 240Volt during times when electric prices are lower, and faster recovery is needed. Use 120Volt during peak prices when less hot water is used
Bring 120Volt from nearby outlet that has 12 gauge wire, or install lower watt elements if wire is only 14 gauge.

Using 30 amp Double Pole Double Throw switch
Ordinary 3-way switch will do same job, but without center off
Also called: 30 amp 2 pole DPDT switch
Buy double-pole double throw 30 amp
2 DPDT switch with center off at Amazon
2 DPDT switch with center off at Amazon

Connect 120Volt wires as Hot and Neutral. Black connects to 120Volt circuit breaker and White connects to neutral busbar.
Connect 240Volt wires as Hot1 and Hot2. Both wires connect to 240Volt breaker.
Resources
How to wire water heater for 120 volts
Select correct wire and breaker
Figure volts amps watts for water heater
See inside main breaker box
Two water heaters
How to control motor with two switches
30 amp maximum current/ safe limit 80% = 24 amps
Over-amped switch will feel warm/ hot
How to control water heater with ordinary switches
Leviton 3033 switch
Larger image
Use 30 amp 3-way switch to toggle water heater between 120V and 240V
Does same thing as diagram above... except diagram above has center off position
Buy:

Leviton 3033 switch at Amazon

30 amp switch/ maximum 25 amps
5500 Watt elements draw 23 Amps
4500 Watt elements draw 19 Amps
Resources
Figure volts amps watts for water heater
Read label on water heater
240 volt water heater circuit Basic water heater circuit
Single-phase 208-240Volt/ residential/  non simultaneous water heater

Resources
How residential water heater works
How to wire thermostats
Troubleshoot electric water heater
See inside main breaker box

3-phase water heaters
Convert 3-phase water heater to single-phase


30 amp safety cut off 30-Amp 120-240-volt Two-Pole Indoor Safety Switch with Neutral/ fusable
Buy:
2-pole 30 amp non-fusable safety switch/ power cut-off

2 pole 60 amp non-fusable / outdoor box/ at Amazon
Safety switches at Amazon
Safety switches for power tools

Resource:
How to wire safety switch
You can use fusable or non-fusable
Having more than one fuse on same line is ok by code


Gas and electric water heaters Industrial electric at Amazon

Industrial supplies at Amazon

Industrial and scientific Amazon
Tools
Shop Amazon - DEWALT
Shop Amazon - Black and Decker
Shop Amazon - Stanley Tools
Shop Amazon - SKIL Tools
Shop Amazon - Porter-Cable Tools
Shop Amazon - Bosch Tools
Shop Amazon saws and saw blades
box timers Compare box timers

Control water heater w/ Z-wave
Intermatic control centers Control centers:
+ manuals and parts


All control centers and parts

Including Z-wave
programmable timer Compare programmable timers

Control water heater with programmable wall timer
Countdown timers Compare countdown timers

Control water heater with countdown timer

E-mail: geno03245w@gmail.com
My response might end up in spam folder, check email folders
Site map
Follow newest idea on twitter
Privacy policy
Search