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How to wire WiOn relay
40 amp Wifi relay
Woods 50054
How to wire wifi
2023
Use only 600 volt wire.
Lamp cord, extension cords are not rated 600 volt.
Use copper wire only. Aluminum wire is fire risk and should be avoided or installed by professional.

30 amp breaker use 10 gauge /
120-240 volt 30 amp outlet can be installed on 30 amp breaker only/ use 10 gauge wire ... cannot be connected to 15-20-40 amp breaker.

Orange/ #10 gauge wire, with ground ... 30 amp capacity. Safe maximum: 30 x 80% = 24 amps.
Buy:
10-2 gauge/ 30 amp
10-3/ 30 amp
Southwire electric tools
Yellow 12 gauge 20 amp
120 volt 20 amp outlet can be installed on 20 amp breaker, but not 15 amp breaker/ use 12 ga wire.
... cannot be connected to 30-40 amp breaker. 1

Yellow/ #12 gauge wire, with ground ... 20 amp capacity. Safe maximum 16 amps.
Buy:
12-2 gauge/ 20 amp
12-3/ 20 amp

NMB is house wiring
UF is underground
Rolls of stranded wire
HOOK UP Wires
50-60 amp breaker use 6 gauge /
240 volt 50 outlet can be installed on 50 amp breaker only
6-2 wire
Buy:
6-2 wire
Southwire electric tools
NMB is house wiring
UF is underground
40-50 amp breaker use 8 gauge /
240 volt 40 amp outlet can be installed on 40 or 50 amp breaker only
6-2 wire
Buy:
8-2 wire
Southwire electric tools
NMB is house wiring
UF is underground
multimeter
Multimeters
Voltage is tested across two separate wires. Ohms or resistance is tested across both ends of same wire. Amperage is tested along one or two points on same wire.
Buy:
Analog multimeter
Multimeters at Amazon
Klein multimeter
Electric testers at Amazon
Clampmeter for testing amp flow on line
Southwire armored cable cutter
Electrical tools must be insulated.
Always best to disconnect power, but insulation failure, lack of proper grounding, grounded neutral, lack of GFCI, out-of-code wiring, generator operating without transfer switch, and other problems still pose a risk to anyone working on electric power ... even when breaker is off.

Buy:
Electrician tools kits
KLEIN TOOLS
Tools kits
IRWIN tools
KNIPEX

Telephone cable knife
Low Voltage Mounting Bracket for Telephone

Protect wiring from damage
Use nipper instead of pliers or screwdriver for removing staples (and nails). Do not damage cable or wires inside cable.

-Code says: Cable SHALL BE secured without damage to the outer covering. NEC sec. 336-15
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End cutting nippers at Amazon
 
Electrically insulated tools
When removing insulation from wire, do NOT score or put cuts on surface of copper wire. Doing so increases resistance and heat on wire and creates possible weak point.
Buy tools:
KLEIN TOOLS
Wire strippers at Amazon
Electric Wire Stripping Machine
Linesman pliers
Utility knife at Amazon

GFCI circuit breaker
A GFCI circuit breaker will protect all boxes on circuit.

Circuit must be grounded. Ground wire must be continuous and connected to each piece of equipment.

White wire on circuit breaker must be connected to Neutral busbar inside the breaker panel.
Circuit must be grounded.
Buy
GFCI circuit breakers
Push down
single-pole breaker   double-pole breaker
1" wide Push down breaker
Plug-in breaker
Buy single-pole:
Choose from 15 to 60 amp
Eaton CL series
Siemens 15-60 amp
Single-pole tandem breaker

2" wide Push down breaker
Plug-in breakers
Buy double-pole:
Choose from 15 to 125 amp
Choose from 15 amp to 200 amp
Eaton CL series circuit breaker
Siemens circuit breaker
Double pole GFCI
Wifi relay
Larger image
WiFi Contactor/ WiFi relay
WiOn from Woods
Woods 50054/ 30-40 amp DPDT
Auto detect voltage/ 120, 208, 240, 277 volt
Outdoor metal box with 3 knockouts for 1/2" or 3/4", located on sides and bottom.
Illustration shows test wire at my house before installation.
NO NC terminals/ DPDT

Buy from my links
DEWENWILS brand wifi
Wifi power switch
Woods WiOn contactor

Resource:
Instructions: Reset first, Test wire, then install.
120 volt  test wiring was done outside using extension cord ... so I could check wifi reception .,... before attaching to structure and hardwiring with 240 volt.

Nema3R weather-resistant enclosure is solid construction, with a metal latch.
Do not expose to direct sunlight or high heat.
Always locate enclosure at least 12" above anticipated snowfall.
Attach WiOn and wires to solid structure so wiring cannot be torn loose.
For longest lifespan of product, install in sheltered area, not exposed to harsh weather.
Wion manual
Optional Indicator light
Lets you see from indoors if device is ON or OFF
Buy:
120 volt Pilot light
120-240 pilot light
indicator light 120v
indicator light 120v
Wifi contactor
Larger image
240 volt wiring

Resource:
See more wiring options

Wifi contactor
Larger image
120 volt wiring

Resource:
See more wiring options
Toggle between water heater and car charger
toggle between water heater and car chargerLarger image
This can be accomplished with simple 3-way 30 amp switch:
.... your 240 volt line has 2 hot wires.... take one hot wire and run it to both the charge station and the water heater ... connect the second hot wire to the common or different-colored screw on the 3 way switch.
Second wire to water heater connects to one of the other screws, and second wire to charge station connects to remaining screw.
Buy:
Tork TU series DPDT/ 120-277V timer
30 amp 3 way switch

Buy:
Eaton 30 amp surface mount outlet
Pass & Seymour surface mount outlet
Car charger L-blade
Adapter: 3 prong dryer plug to electric car
Change water heater temperature using timer
Larger image
Change water heater temperature using WIFI
Also applies to SPDT Intermatic T106 timer

Use Wifi contactor for two different temperatures on electric water heater.
This plan allows normal 120°F temperature for saving energy, and then increase temperature to 130-140°F for sterilized wash day or certain times of day. The same can also be accomplished with DPDT 40 amp switch or relay.
140°F is extremely dangerous. Typical bath shower is 110°F and Hot tub 105°F

Operation plan has two states: Either upper thermostat and element have power -or- lower thermostat and element have power. But not both at same time.
When timer activates, power to lower part of tank turns OFF. Power to upper part of tank begins. Upper thermostat is set for higher temperature resulting in very hot water at top of tank, but not whole tank. Disadvantage: If the upper part of tank is heating, then lower part of tank is off, so lower part of tank will cool rapidly as new cold water enters tank, therefore this technique is good for making short-term batches of very hot water.

Work required: Install ECO-protected thermostat for lower thermostat. This ensures both upper and lower parts of tank are ECO-protected from overheating.
Rewire tank so upper and lower parts are separate. Add 2 extra wires.
Use GM40 timer to toggle power between lower and upper parts of tank.

Other options include: 2 water heaters, mixing valve, recirculation system
Resourcese
How to wire thermostats
Two water heaters

Add another thermostat to water heater
How electric water heaters work

How to wire off Peak water heater
woods 50054 wifi contractor
Steady blue light indicates wifi signal.
Green power light indicates if unit is getting power.
Always reset BEFORE set up ... you can use end of paper clip to push and hold reset button for a couple seconds.
Steps for setting up Woods 50054 WiOn Contactor/ WiFi relay
Connect power wires to Terminals L and N. Device auto-detects voltage. Green light turns ON.
Download WiOn App on phone.
App shows steps: go to settings and include the device into wifi router.
After wifi is established, the blue light will be continually ON.
Note: You will notice that after the WiOn is added to your wifi network, it will not show in phone settings... which apparently means there is good connection between phone and device.
Of course it shows in the Wion app, but not in phone wifi settings.
 
Then go back to app and go to next screen. The WiOn device icon should appear on the screen. Touch the round icon and it will turn device on-off and will show if device is ON or OFF.
Steady blue light indicates wifi signal

Tips.
ALWAYS use reset button and reset device to clear any prior issues.
More than one phone can be connected.
If device falls off wifi, the icon located on phone app will disappear.
Blinking blue light means no wifi connection... use reset button, and/or try different location.

Before final installation of the device, check if the location has good wifi reception. This is why my photo shows test wiring.
wion ground connection WiOn ground connection
Use supplied ground connection or tap 10-32 hole and install your own ground screw
Make sure ground wires are pushed down and away from other wires.
Resource:
Why you need ground
wifi contactorLarger image Alternative method
Wifi contactor
Zwave contactor 
Control 240 volt with Wifi or Zwave

Buy from my links
Wifi switch
Z-wave switch

Bud industries 6x6x4 best value'

Hinged box

120Volt coil 2-pole contactor

Resources:
Supply list + assembly instruction
Contactor and relays
Wire and breaker size
z-wave-water-heater Another method for indoor
Zwave contactor installation 
6x6x4 enclosure or pull box attached to wall
Contactor installed inside enclosure
120 volt connected to z-wave switch, z-wave controls contactor coil, contactor turns 240 volt water heater on-off.
Wired with 240 volt indicator light
Resource:
Supply list and assembly instruction

Don't get electrocuted.
Outdoor electrical equipment CANNOT be wired with live power.
Turn power off.... Never ever ever stand on damp soil or surface and touch electrical device.... never ever touch electrical device that is wet or got wet. To prevent electrocution, put down dry boards to stand on .... test for power using non-contact voltage tester. Use two different ones, since they're probably made in China. Then proceed with caution. More people are killed from 120 volts than any other voltage... never assume power is off, or that household 120-240 volt cannot kill you.... because it can. The power can grab and hold on to you... always have helper (wife) stand nearby and knock you loose with 2x4. She cannot touch you or both will get stuck to the power. Get medical help immediately if shocked or burned. Do not treat electric burn with water. Read first aid manual beforehand.

Buy:
Multimeters at Amazon
Buy non-contact voltage tester at Amazon
Electric testers at Amazon

Resource:
How to test if water heater electricity is OFF
Intermatic compressor defender Install Type1 - Type2 surge protector
Electronic devices in home are not protected from surge.
Surge can be nearby lightning strike or simple power outage or brownout.
Other causes can be inductive appliances such as air conditioner, or if electric power distribution line coming to house has a lot of industrial or commercial 3-phase loads, and power the line does not have a capacitor bank to balance and offset inductive disturbance.

Surge protector located next to the device will protect better than surge located farther away... you can install multiple surge protection on same line, for example one surge in main breaker box, another surge on outdoor AC, one for WiOn, and one for shop equipment in garage etc... plus surge power strips for TV etc...  Individual appliances are especially affected by surge damage from lightning. This is because lightning can energize any section of wire.
Highly recommend surge protection for outdoor AC unit. When AC unit turns on, it causes a voltage disturbance that travels across the line to other appliances. The inductive disturbance is a type of surge. With the advent of energy-saving, staged motors, the surge caused by the AC appliance is reduced, but the appliance is more susceptible to damage from external surge such as line noise, other appliances, and lightning etc.

Resource:
How to wire Type1 Type2 surge protectors
10-3-wire
10-3-wire12 Ga
10 gauge or 12 gauge?
10 gauge is larger/ for 30 amp breaker. 12 gauge is smaller/ for 20 amp breaker
10 gauge wire can have black-white or black-red
12 gauge will have black and white wires

Buy short pieces 10 and 12 gauge wire at local box store
Compare with your wire.
Resource:
Match color code and amp rating for wire
Romex connector Loose wires are dangerous... Use wire connectors, or conduit clamps to secure wire to enclosure
By code, all wire must be securely attached to enclosure to prevent wire pull-out.
Wires or conduit must be secured to structure, so there are no loose wires.
Wires inside the enclosure cannot lay over top of connection terminals. Best if all wires are slightly separated from each other.
Join all ground wires together and cover with wire connector... connect ground wire to ground screw.
Push ground wires down-and-away from connection terminals and other wires.
WiOn outdoor enclosure has 3 knock outs for 1/2" or 3/4" wire connectors 1 on bottom, 1 on each side.
Resource:
More enclosures


clean and straighten wire ends
Fire safety
Use only solid copper wire, and no insulation under screw plate.

Max 2 wires under screw plate

Both wires same gauge
Straighten wire ends. Clean old wire with sandpaper, or cut back and strip undamaged wire.

Do not use stranded wire, it will come loose with heat expansion and overheat and cause burning. Do NOT solder end of stranded wire to make solid ... amperage will melt solder. Connect stranded wire to short jumper of solid copper wire and cover with twist on connector

Always keep enclosure (box) cover closed
Insdulation under screw plate
Larger image

Max 2 wires under screw plate
Both wires MUST be same gauge
Straighten each wire
Tighten screw very tight against copper wire

Larger image
No stranded wire under screw terminals
Connect stranded and solid with wire connector and run jumper to screw plate.

See example image

Stranded wire is Good for compression terminals
Terminals

Fire inside timer caused by stranded wire
Keep enclosure door closed at all times
Do not use stranded wire.
Tighten screws very tight against wire. Torque it down.
Resource:
Timer caught fire

Wifi Vs Zwave
David provided this first-hand analysis:
He says, I'm definitely going the z wave route, given the option.
It tends to be more plug-and-play, at least so far. 

The icing on the cake is that all of my z-wave is controlled by a single app and/or web interface. 
It's a lot easier to maintain and to teach my wife how to use.

Installation overview:
I have my landscape and driveway lights, and now my water heater on Zwave.  
My irrigation timer is WiFi, as there was not much of any other option that was as compelling ....
 ... and for the same reason I have Nest for thermostats.
Buy from my Amazon links
Nest at Amazon
Amazon ECHO to control wifi
Wifi sprinkler controller

Zwave Connectivity:
Zwave  is a mesh network.
All the devices are capable of relaying a signal from any zwave device to another switch until they get back to the hub. 
That makes placement a bit easier. 
Z wave is also much lower power, allowing for battery powered devices that would be quite difficult to accomplish with wifi.

Wifi connectivity:
Wifi can be finicky on connections, whereas z wave seems to be more reliable. 
All wifi devices have to be able to reach the wifi router for their signal,  which can be a problem depending on where the router is installed. 

Controller:
Each wifi has separate apps. So if you have wifi devices from different manufacturers, then you have the app for each device.
You have to remember which app goes to which device.
Zwave has one hub. All Zwave devices, from any manufacturer will work with hub.
The icing on the cake is that all of my Zwave is controlled by a single app and/or web interface. 
Z-wave is a lot easier to maintain and to teach my wife how to use.

Ease of replacement:
I already had an electronic water heater controller failed much sooner than it should have,
The beauty of using a contactor instead of timer, is that if my Zwave switch fails, all I have to do is replace it at a cost of less that $40. 
Compare Boxtype water heater timers

Availability:
Zwave has standard protocol, and devices from any manufacturer will work will all other Zwave devices.
Z wave replacement are reasonable prices.
On the other hand, Wifi is proprietary software, unique to each manufacturer. If manufacturer changes or discontinues product...
... then older devices might stop functioning ... and replacement devices not be available.
Resource:
Z-wave contactor




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