Home
waterheatertimer.org
13 water heater timers Try water heater timer for free 9 ways to save with water heater Troubleshoot electric water heater Do it yourself
2014

Turn water heater ON-OFF with 30 amp switch

Applies to ordinary residential non-simultaneous water heater rated up to 5500 watts
Figure volts amps watts for 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/ rated 25 amps
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 switches at Amazon
Buy Wire: Orange/ 30 amp #10 gauge for water heater
25 foot 10-2 NMB indoor with ground
100 foot 10-2 NMB indoor with ground


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
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:
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 nut basics
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 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
30 amp safety cut off

30-Amp 240-volt Two-Pole Indoor Safety Switch with Neutral/ fusable

Buy
2-pole 30 amp non-fusable safety switch/ indoor / power cut-off

2 pole 60 amp non-fusable / outdoor box/ at Amazon

You can use fusable or non-fusable
Having more than one fuse on same line is ok by code
Water heater 3-way timer
See Larger

Control water heater with wll timer/ and 15-20 amp switches/ options

See materials list and wiring

water heater timer on wall
Switch maximum rating is 25 Amps Check specs when buying switch
Check water heater label on side of tank for Volts and Watts
5500 Watt water heater 240 Volts = 22.91 Amps or 23 Amps
4500 Watt water heater  240 Volts = 18.75 Amps                    
3500 Watt water heater  240 Volts = 14.5 Amps                      
1500 Watt water heater  240 Volts = 6.25 Amps
Figure volts amps watts for your water heater   
How much does it cost to run water heater

Electrical calculation:

        romex connector on water heater

Safety

Always use cover plate over switch
Attach wire to solid structure using cable staples
Attach wire firmly to water heater
Many states require conduit to water heater
240 volt water heater circuit

Basic water heater circuit

main breaker box
Larger image

120Volt and 240Volt breakers

Image shows 120Volt line and 240volt line.

Resource:
See inside main breaker box
Color code and wire sizes
Basic 120 volt and 240 volt water heater circuits
How to wire 240 volt outlets
How to wire 3-phase outlets and timers
How to convert 240Volt  water heater to 120volts
How to install electric meter on water heater

Additional links
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


Leaking water heater

How to install gas water heater

Water needed: shower and bath

Flooded water heater

Cost to run water heater

Troubleshoot electric water heater

Troubleshoot gas water heater

Remove old element
Pass and seymour TM8113
How to wire switches

Gas control valves
Solar water heater
9+ ways to save with water heater

Anode rods

How to wire off-peak water heater

Pro-n-con tankless water heater
All cost are energy
color code household wire
Wire sizes

How electric water heater works
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
box timers Compare box timers
programmable timer Compare programmable timers
Countdown timers Compare countdown timers
Compare power packs

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