How
to wire water heater
with switches & timers
switch circuit
See larger
Do not connect 15 or 20 amp 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
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.
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
Compare all Programmable timers
6124 at Grainer
.pdf manual
Close-up Timer wiring
Do not connect 15Amp 6124 timer directly to 240V water heater
See inside box with contactor
Step-by-step how to wire contactor
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
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
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
Larger image
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
