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Got fourdownlights for bathroom with no transformer required,whats the best way to connect the wireing to these,they can't by the looks of things all loop together as i thought they might,as each one has only one terminal to allow connection to the mains then obviouslyfrom the other side a wire to the downlight.cheers.

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Yes - you connect from the switch to one to the next to the next... ending at the last.

Posted on Dec 06, 2009

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Can I connect a programmable thermostat

Connect to Coleman Presidential II 7670 model in a mobile home >gas > no cooling> maybe heat pump > it only has two wires and both are green
Dec 02, 2014

A heat pump connected would require quite a few additonal wires and a standard central A/C would require a total of 5 for a good quality programmable with single stage heat and single stage cooling in the circuit.

The two wires you refer to should be all that's required to operate heat only with a standard thermostat. You must do one of two things though to add a programmable thermostat:

1) Either select a programmable stat that operates on battery power alone, necessitating periodic battery replacement or,

2) Prepare yourself to pull at least one additional wire from the furnace to the thermostat location.

The two wires, if utilizing a battery powered stat can go to either R or Rh and to W. Either wire to either terminal because you are only completing the one circuit. Ideally you would want to locate which of the two is the one directly off of the ' hot' side of the transformer.

If you opt to pull an addiional wire for a thermostat of a superior quality, you will HAVE to determine which of the two green wires is the hot side of the transformer and it MUST be connected to R or Rh. The second green wire goes to W. The third wire that you had to add must go to the C thermostat terminal. That same wire has to be connected to the neutral side of the transformer to complete the circuit. Most programmable t-stats require both 24v hot and 24v neutral to operate, then have the battery for back up during a power failure whereas the battery powered stat runs entirely on the battery and not 24v from the furnace.

If you are unable to determine the wire connections as outlined above, do not attempt it....remember you are working on an LP furnace !!! Any doubt on the ability to ascertain correct locations for the terminations requires you to contact a qualified technician as there is only so much that can be gleaned by a person in a remote location from a typewritten description of the situation.

Nov 30, 2014 | Heating & Cooling

1 Answer

I am wiring a Honeywell wifi unit and I used a separate 24v transformer and connected to the c and rc terminal. My system is ac and heat and uses both and rc and rh wire. I wired the rc to the r ter

A thermostat is a switch. It connects 24vac from one terminal to another depending on the request. The 24vac comes from a transformer, usually located in the furnace and connects to the R terminal. Since you are using RH and RC without a jumper between it means there are two transformers, one in the furnace for heating (RH) and one in the air conditioner condenser used for cooling (RC).
Your old thermostat was probably mechanical and did not have a C (24vac common) terminal. Your new thermostat requires power to operate therefore needs a wire connected to a C terminal. I would get rid of the transformer you added and look for an unused wire in the bunch at the thermostat. If it's there connect it to C on the thermostat and to C on the furnace. Remove any jumper from R to RC or from RH to RC depending on your thermostat and connect wires same as the old thermostat.

Jul 04, 2014 | Heating & Cooling

1 Answer

How do i connect a bathroom LED mirror to my house lighting circuit? Can I wire it into a light switch?

I'd suggest that you hire a licensed electrician so that the installation will meet all local codes, and probably will not burn your house down.
Make sure that you know what the voltage requirements of the mirror are

Jun 25, 2014 | Electrical Supplies

1 Answer

My Icon bathroom fan does not work by timer I have changed timer , transformer and electrics have been checked (with certificate) What next !

Which timer do your have?
Not all timers work with fan motors?
Are you adding a new bath fan? Or are you installing a new timer?

What transformer what checked? A transformer is used to change voltage. For example you can plug a Malibu outdoor-light transformer into ordinary 120V outlet and the transformer changes voltage to 12 volts so you can safely operate lights stuck into the ground around bushes. Or your phone recharges using transformer that converts ordinary 120Volt into very low voltage entering your phone.
Practically every electronic device in your home has a transformer ... microwave, TV, computer ... but I don't know why a bath fan would have a transformer.
Add a comment, and I will respond.

Aug 17, 2012 | Hardware & Accessories

1 Answer

We have a fan 60 minute push button timer we purchased and installed with a 3-wire system. WE need to purchase another one but they all have 4 wires now. Where can we purchase a 3-wire one.

It sounds like you have mechanical push-button type timer.
I need more information to avoid guessing which timer is best for your situation.

I'm not sure what a 3-wire system is?
Add a comment
1) How many switches control same fan
2) What color wires inside box.

Is this
3) low-horsepower bathroom fan?
4) other fan, for example: higher horsepower attic fan, 3/4 horsepower industrial kitchen fan, or 1-horsepower whole house fan?
5) Is this your home or is fan for continual commercial use?

6) Is this a countdown timer that turns fan OFF automatically after 60 minutes?
7) Or what kind of timer are you looking for.

Open following link for list of home-use countdown timers and horsepower ratings of countdown timers.

Spring-wound timers do not require extra Neutral wire, and can control 1 HP whole-house fan.
The push-button timers each require Neutral wire to run electronics inside timer, and they range from 1/6 HP to 3/4 HP which will work for any bathroom fan.

If you cannot give required information for more free help, then request fixya interactive answer and pay fixya expert to ask same questions while expert supplies you with immediate information.

Apr 06, 2011 | Woods 60 Minute Decorator Wall Timer...

1 Answer

How do you wire the Honeywell RTH8500D thermostat so as to operate it battery-free from the main power, yet have battery back up? Info online and in manual does not appear to address this, yet on package...

You would need to have a the hot wire from the transformer which would be the red one and connected to R/Rh/Rc. You would also need a common wire from the transformer connected to the C terminal on the contactor. It is usually a blue or brown wire. You would need to look at the transformer in the airhandler to see what color the common is. The secondary wires on the transformer are usually yellow and blue so you will need to look where these connect to the thermostat wires to see which is the common. Also your existing thermostat wire may not have enough wires in it to do this. Let me know if you have any questions.

Jul 13, 2010 | Heating & Cooling

1 Answer

I have a SELV electric fan in my bathroom with a timer. I want to be able to disconnect the timer portion so that the fan will switch off as I turn off the light.

OK .. the obvious connection would be to find the transformer. Then look at the imput and output of the transformer . you want to take the output , 24 volts, from the transformer and wire it directly to the lamp base. If this transformer is attached to the circuit board then it may be a difficult task to separate the leads. You will want to haqve the pull chain switch in the power line between the power source and the transformer , so the transformer is only working when the lamp is on.

May 31, 2010 | Dryers

1 Answer

Malibu 300watts connected to 4/50-watts spot light and 5/7watts l

sir, you have a voltage drop problem. you make no mention of what wire size you are running to the fixtures or what the voltage is required. I need to know the wire size you have and the voltage required to run the lamps to come to any decision to repair your problem. write me back at and we'll see what we can do.

Oct 24, 2009 | Intermatic 600 Watt Low Voltage...

1 Answer

Need to change oven from 440 3 phase to 220 single phase hobart cn90 oven

It can be done with a transformer, 480/ 240 single phase transformer to get the lower voltage. Then the oven will require some wiring changes to get all the elements and controls connected to two hot wires instead of three. The transformed will be sized to the wattage rating of the oven. This is a only basic description of what needs to take place.

Sep 05, 2009 | Hobart Ovens

1 Answer

No electricity in all bathroom outlets

you may have agfi outlet in the circuit. the outlet has 2 push buttons in the middle. it maybe an outside outlet that is tripped some contractors hook up the circiut like that

Mar 09, 2009 | Siemens Electrical Supplies

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