Always protect flooring
Buy:
Under counter water heaters at Amazon
Point of use water heaters at Amazon
Buy:
Dishwashers at Amazon
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Always protect flooring |
How
to wire under counter water heater to same circuit
with dishwasher Buy: Under counter water heaters at Amazon Point of use water heaters at Amazon Buy: Dishwashers at Amazon Search waterheatertimer.org /
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 Reliance 6-10 gallon Side connections/ 6 year warranty Buy Reliance water heaters 12-3 extension cords 12-3 Southwire cable Resources Reliance manual State manual |
 American 6-12 gal Top connections/ 6 year warranty Buy American tiny at Amazon 12-3 extension cords 12-3 Southwire cable Resource: American manual |
 State / Reliance American/ are all AO Smith 2.5 - 6 gallon Top connections/ 6 year warranty Buy American 2.5 Amazon Reliance 6 gal Amazon Resource: Reliance manual |
 Ariston / Bosch 2.5 - 4 gallon - 7 gallon Top connections/ 2 year warranty Buy Ariston at Amazon Bosch at Amazon Resources Ariston resources Bosch P10 P5 |
| Electrical
capacity of dishwasher and water heater: 1) 15 amp breaker with 14 gauge wire at 80% rated load = 12 amp load/ 1440 watt. 2) 20 amp breaker with 12 gauge wire at 80% rated load = 16 amp load/ 1920 watt. 3) Typical dishwasher 420-720 Watts and draws 3.5- 6 amps (look at label inside door on dishwasher) 4) Typical under counter water heater 2-1/2 gallon to 20 gallon is 1500 Watt and draws 12.5 amps. 5) Combined load for dishwasher and water heater is 2220 Watts and 18.5 Amps. Objective: wire both 120V dishwasher and 120V water heater so neither will turn on at same time |
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 Never
assume power is OFFUse non-contact voltage tester on timer, on wire, on outlet to see if power is present. Press button on tester, if single beep then no power is present. If continuous beep then power is present. Never stand on bare ground, always stand on dry boards, do not hold or touch anything metal when working on timer or water heater that has power, tape tester leads to wood sticks, never touch wet water heater, or flooded water heater, or timer that had a short or fire without turning power OFF. Buy Multimeters at Amazon Buy non-contact voltage tester at Amazon Electric testers at Amazon |
 Buy: Dishwashers at Amazon |
How
to wire under counter water heater to 15 or 20 amp line that goes to
dishwasher. Objective 1: Either the dishwasher has power or the under-counter water heater has power. But neither at same time. Objective 2: inexpensive, reliable solution that doesn't require much space and is simple to wire, simple to program and handles job with no chance for error.  |
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Buy: Intermatic FM1 timers at Amazon 24-hour 120Volt 60 Hz at Amazon 7-day 120volt 60 Hz at Amazon 24-Hour 240Volt 60 Hz at Amazon 7-day 240Volt 60 Hz at Amazon  Project
material cost $45  |
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| Use 20 amp 3-way switch | |
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Use 20 amp 3-way switch Local box stores sell 15 amp switches. For longevity of circuit, use 20 amp switch Buy 20 amp 3-way switch |
| Alternate timer solution: T1905 timer | |
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T1905
is 120Volt timer with NO and NC terminals Buy timer: T1905 series 120Volt 20 amp 1 Hp timer at Amazon T1905 480 Volt timer at Amazon T1906 series 208-240V 20 amp timer at Amazon Parts/ convert timer to different voltage by changing clock motor 125Volt WG730 motor at Amazon |
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Wiring
diagram
for T1905 Connect 120 Volt water heater as shown Add dishwasher: Connect dishwasher black wire to NC terminal. Connect dishwasher neutral wire to other white neutral wires. |
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DPDT timers toggle between 240 volt appliances Other timers with NO NC contacts/ toggle circuit between appliances/ applies to 120V or 240V  See all these timers |
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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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