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120v hot tub wiring diagram! Need to wire fro 120v! there is a red, white, black & green to connect the wire from the power plug. The power cord only has black, white & green. Which is the hot and neutral on the hot tub? The red & white...the black & white or red & black?

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I would expect your tub is either 110 or 220. Currently you are set up for 110. Based on that ... you disregard the red wire.

If your tub can run on 220, you should run it on 220 as this is more economical.

You should probably have an electrician check this out and make any changes to assure proper and SAFE operation of your tub. You are using a GFI, correct?

Thanks for your interest in FixYa.com

Posted on May 16, 2010

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Posted on Jan 02, 2017

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I have a new heater with diferant terminals from the old one so not sure how to atach the wires


There is no need to rewire the internal of the heater!
Just bring in the electrical supply to the heater, it can be either 120 or 240 volts.
If the heater you have is like the picture associated with your post, then all then have to do is change the supplied plug from 240 to 120. It comes pre set for 240. That plug is inside the cabinet.

If any other brand, then you need to change the wires at the transformer of the heater. All heaters need to be supplied with primary voltage: 120 or 240. Then the control system is supplied with secondary voltage out of the transformer. The secondary voltage is no more than 28 volts. and these wires are normally colored as blue or yellow.

Secondary power is already wired within the heater. NO need to change where they are. You will only need to deal with the Primary wiring.

There are many varieties of transformers that transform high primary voltage to a low secondary voltage of 28 volts. and these transformers have many wires: primary & secondary.
I will try to make this easy to understand.

If you have a Gas Heater Transformer with these colors:
  • Red
  • Black
  • White
  • Green
Or...
  • Red
  • White with Red Stripe
  • Black
  • White with Black Stripe
  • Green
These are Dual Voltage Transformers, you can bring in either 120 Volts or 240 Volts

If you bring in only 120 Volts...
1st example:
The Red wire will not be used! Hot wire to the Black, and the Neutral/Common, to the white wire. Green to ground.

2nd example:
Connect the Red wire with the White with Red Stripe together and connect these to the incoming Neutral/Common wire, normally White.
Connect the Black Wire with the White with Black Stripe to your incoming Hot Wire, which is normally Black.
Green to ground

If you bring in 240 Volts...
1st example.
1 Hot wire to the Red, the Other Hot wire to the Black, and White wire is not used. Green to ground

2nd Example:
Wire nut the two Striped wires together. then one incoming Hot wire to the Black, the other incoming Hot wire to Red.
Green to ground

Or This is only a Low voltage - 120 Volts Only
  • Black
  • White
  • Green
Or either any of these combinations...
  • 2 Blacks w/Green
  • 2 Reds w/Green
  • 1 Black, 1 Red w/green
This type will only be a high voltage, 240 volts only
Picture below is what a transformer looks like and it is where your incoming supply wires go. The smaller leads with the spade connections will go to a specific location & is the 'Secondary" .

Good Luck



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Mar 14, 2015 | Pool & Spa

1 Answer

What do I do with the red wire on a Brinks Halogen Motion Sensing outdoor security light


Please perform these connections with the mains power off.

The standard is the Black wire is hot, the White wire is neutral, and the Red wire is switched. For your Sensor connection 120V is connected Black to Black and white to white while the Load is connected White to White and Black to Red (assuming your load is using standard color coding.
Here is a simple diagram for your connection.

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Mar 01, 2015 | Electrical Supplies

1 Answer

I just got an LG TROMM DIE2512W dryer. I have a power supply cord with three cables (green, black and white) good for 120v.15amp. The green cable is my ground. I connected the black cable from the power...


Hi,
If you have a red wire then the dryer is a 240v dryer and needs a 240v 30 amp circuit...

Here is the manual for your dryer and it shows the hook up you need on page 17...or part 5 of the manual...

Click here

heatman101

Jul 31, 2011 | LG DLE2512W Electric Dryer

1 Answer

I am trying wire a motion Senior its has 3 wires coming out the back red white black


To connect a separate motion detector to a light fixture (and assuming the fixture uses incandescent or the newer twisted florescent light bulbs), the RED wire from the detector is attached to the black ("hot") wire from the fixture; the WHITE wire from the detector is attached to the white wire from the power source; the BLACK wire from the detector is attached to the black ("hot") wire from the power source. Sometimes the white and black wires from the power source are mixed up, reversed. So it is best to check to determine which wire is actually "hot" (shows voltage in a meter between the wire and the ground wire or the metal box the power wires come from). In general, a colored wire (often black) in the power source, if wired properly according to accepted custom, will be "hot" and 120v in US. The white wire in the power source is called the "neutral" and should be neutral with the ground wire and/or the metal box. If there is another colored wire in the power source (often red) and if it is not taped with some black tape (to indicate it is really a black wire), then it too may be a 120v. hot wire, but it may also be an 120v. hot wire that is 120v opposite the other 120v wire. That is, one 120v wire is 120v+ and the other is 120v- The difference in voltage between these 120v wires + and - is, hence, 220v. If you see multiple colored wires, it is also a good idea to check the voltage between them to know if you are dealing with a power source that entails 220v. In short, you want to know what you are doing, obviously for personal safety, but also to accomplish what you want... to properly connect the motion detector.

Dec 12, 2010 | Home Security

1 Answer

Wiring of the 2-5-10-15 timer to a jucuzee bath tub it has three wires black blue green. Thanks. Terry.


First thing to consider is size of Load.
Leviton countdown-timer Load rating is 1800 Watt, 120Volt.
Look inside Jacuzzi at rating plate on motor.
Rating plate on motor should give Volts, Watts and Amps.
Formula Volts x Amps = Watts.
Sometimes motor shows VA which is Watts
Is Jacuzzi on 240Volt breaker or 120V breaker?
Leviton countdown timer is not for 240V load.

A) If 120Volt electric Load checks out, here's how to wire timer if 1 cable enter box.
Timer-black-wire connects to jacuzzi-black
Timer-white-wire connects to ground.
Timer-green connects to ground.
Timer-red connects to jacuzzi-blue.

B) Here's how to wire timer if 2 cables enter box.
120Volt cable coming from breaker box has black, white and bare copper wire.
Timer-black-wire connects to black-wire-from-breaker
Timer-white-wire connects to white-wire-from-breaker-box.
Timer-green and jacuzzi-ground connect to ground

Timer-red-wire connects to jacuzzi-black-wire.

Jacuzzi-blue-wire connects to white.
I am puzzled why this wire is blue if circuit is 120Volt.

Nov 26, 2010 | Leviton Timer Switch 2-5-10-15 Minutes, 4...

1 Answer

I have a 240v plug in with 4 wires ( red and black-hot, white-common, and copper-ground) and on my campbell hausfeld air compressor i have only three wires ( white and black- hot and green-ground) how do i...


First are you sure your compressor is wired for 220. If so \,use the white and black for the hots connected to the black and red in your recptacle. Connect the green to green or bare conductor. The compressor most likely has no 120V devices on it so the neutral is not requied.

Jul 13, 2010 | Campbell Hausfeld Air Tools & Compressors

1 Answer

Connecting 220 plug to 185SG welder- Power cord on welder, Black,Red and yellow w/grn stripe Plug- Black, Green and white Which wires do I hook together?


are you sure you have the right plug?wite wires are normaly found only on 120v and 347v systems. but if it realy is 240v then black to black, red to wite and yellow/green to green.

Oct 24, 2009 | Clarke Power Products Mig/Fluxcore 180En...

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I need a wiring diagram to wire my oven to the house power. Whirlpool electric model# rb260pxyb


You will have 3 or possibly 4 wires coming out of the oven Red and Black go to the hot leads in the junction box.Usually red & black but could be 2 black. White goes to white Bare/green go to the white if no Bare/Green available. This is for a wall oven. If the stove is free standing and you want to attach a cord. Just buy the cord that matches the outlet in your house. Make sure it is a range cord and not a dryer cord. They are very similar. If a 3 conductor cord (most common) outer two terminals are the hot ones. There is a wire or metal strap between the frame of the range and the center (neutral )terminal . On a 3 conductor cord leave this connected. On a 4 conductor cord remove this wire and connect it to the green/bare wire in the cord. There may be a vacant terminal on the block for this purpose. If not use a wire nut.

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1 Answer

I have to change the power cord of my dryer. the new power cord has 4 pronge. the 4 wires colors are red,white,black and green. on the dryer i have only 3 wire: red,blue,black. i want to know witch wire...


  • green = ground (attach directly to the case, should be a green painted screw near the opening
  • red = hot 110v connect to the red on the dryer
  • black = hot 110v connect to the black on the dryer
  • white = neutral connects to the blue (only if the blue is in the middle)
  • neutral is always in the middle with a hot wire on either side of it.
  • also make sure all the connections are tight
let me know if you need more help Mike

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