How
to wire water heater
with switches & timers
switch circuit
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Do not connect 15 or 20 amp switches directly to 240V water heater
See inside box with contactor
See step-by-step installation of contactor
Figure volts-amps-watts for your water heater
See 3-way timer circuit
See close-up of individual Timer wiring
Timer mechanism is powered by small battery These timers work for applications up to 100 feet away.
Visit Intermatic page for EJ500
Visit Intermatic page for ST01C
See close-up of individual Timer wiring
Timers available on Internet
Do not connect these switches directly to 240V water heater
See inside box with contactor
See step-by-step installation of contactor
Figure volts-amps-watts for your water heater
See close-up of individual Timer wiring
Compare all Programmable timers
See 6124 at Grainer
Read .pdf manual
See close-up of individual Timer wiring
Do not connect 15Amp 6124 timer directly to 240V water heater
See inside box with contactor
See step-by-step how to wire contactor
See close-up of individual Timer wiring
10-20 minutes to wash up
20-30 minutes to shower
40-60 minutes for bath
Compare all countdown timers
See close-up of individual Timer wiring
Do not connect 15A countdown timers directly to 240V water heater
See inside box with contactor
See step-by-step how to wire contactor
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Here is drawing for 30-amp 3-way circuit
Note: the 240V circuit has 2 hot wires <> putting a switch on 1 hot wire will work
See Leviton 3033-2 at Grainger
Check spec sheet for amperage rating of switch
5500 Watt elements draw 23 Amps
4500 Watt elements draw 19 Amps
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Lowes carries Cooper 3032V
Look for green colored switch
Check spec sheet for amperage rating of switch
5500 Watt elements draw 23 Amps
4500 Watt elements draw 19 Amps