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Z-wave
countdown timer Home automation |
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Neutral required: This plan draws hot and neutral from any outlet box. Applies to zwave home automation devices. Buy: Zwave switch |
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Project
overview: Requires
Neutral Use any programmable timer, zwave or wifi device that is rated for resistive load. Use Hot and Neutral from nearby 120 volt outlet to power device. Rule of thumb: Outlet box will always have Hot and Neutral, Switch box will always have Hot but not always Neutral, Ceiling box with light will always have Neutral but only has Hot when light is on. Buy: Programmable timer Countdown timer Zwave switch Wifi switch Resource: Compare programmable timers Compare countdown timers |
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Neutral Required Basic 120-240 volt AC circuit Understanding the basic 120-240 volt AC circuit is important for electric wiring. Buy: Programmable timer Countdown timer Zwave switch Wifi switch Resource See inside main breaker box |
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Delay timer wiring How to wire AH3 delay timer How to wire pin timers |
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Leviton WSS10-GDW Wireless
Momentary Switch Works with occupancy sensor Momentary switch can activate delay timer like Dayton shown below Leviton momentary switch at Amazon How to wire AH3 delay timer |
| Horsepower rating on electrical
device Timers, contactors, switches, etc all have a amperage rating. Timers intended for use on motor loads also have a horsepower rating The horsepower rating makes it easy to select correct timer. But many electrical devices do not have a HP rating, and give only amp rating. Other devices specify they cannot be used for inductive (motor) loads. Always read product manual for specifications | Calculate amp rating of motor Motors use more amperage when starting. This is called inrush and occurs for a fraction of a second. The extra amperage is needed to 'set up a magnetic field surrounding the motor and overcome lack of angular momentum of motor and load.' Inrush can be calculated within a range using information from the motor nameplate. The nameplate should show Voltage, Locked Rotor code per horsepower, and HP. Using NEMA Locked Rotor Code Table, locate letter code that matches motor nameplate. Codes generally follow the alphabet with A having the lowest starting current (current = amps). The range will be two numbers such as 4.5 to 5.6 for letter D. Multiply each number times 1000, then divide each number by Voltage to find range of inrush per HP. |
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Tools DEWALT Black and Decker Stanley SKIL Makita Porter-Cable Bosch Irwin Hand tools Klein hand tools Fluke electrical testing Dremel hobby tools Campbell Hausfeld air powered Tekton automotive Powerbuilt automotive Saws and saw blades |
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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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Resource: Programmable timers Countdown timers Off delay timers On delay timers Timer modules Din rail Twin & one-shot Woods Intermatic Tork |
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Recirculation systems |
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