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Figure volts amps watts for water heater | 9 Ways to save with a water heater | Do-it-yourself |
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| GE
15207 wiring GE 15132 wiring |
How
to wire GE 15087 indoor-outdoor water heater timer links on this page
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 Timer safe for 1 residential water heater. |
See
GE 15087 manual See large image Max 24 on-off periods per day Step 1: Remove screws on face to access wiring.  |
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| ✔ Set dip switch before connecting power. Manual says that incorrect dip-switch setting will damage timer. |
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Step 2: Dip switches GE 15087 timer can be used for 120V or 240V water heaters > simply change dip switches and select different voltage. Water heater voltage is printed on side of water heater. Match dip switches to water heater voltage. Figure Volts Amps Watts for your water heater Review basic 240V water heater circuit |
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Use romex connector where wire enters box |
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Step 4: Wiring
features Four basic features inside 15087 1. Dip switches 2. Screw terminals for clock 3. Screw terminals to contactors 4. Contactors/relays that handle on-off switching to water heater |
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Step 5a: Wiring diagram for 240V water heater. Both white and black wires are hot. Use 10 gauge wire for 240V water heater GE 15087 timer is housed in plastic box Ground wire is not connected to box Ground wire travels continuously from breaker box to water heater. |
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Step 5b: Wiring diagram for 120V water heater. The black wire is hot, the white wire is neutral. GE 15087 timer is housed in plastic box Ground wire is not connected to box Ground wire travels continuously from breaker box to water heater. |
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Step 6: How
to set
timer See GE 15087 manual  Rotate dial to set time of day. 48 segments around dial divide 24-hour day into half-hour periods. Photo shows all segments down. > segments up = timer on > segment down = timer off  |
|
 |  How to wire EH40 off-peak timer |  How to wire off-peak water heater |
