16v-transformer is reading 20.5v on my voltage reader. Does it need replacing? I have exactly the same issue. I installed this same transformer and am getting 21 volts. Also going to connect it to my video doorbell camera. Seems like something is wrong with these units. Is this compatible with the Ring Doorbell, that calls for a 16v to 24v transformer? This transformer steps down to 16V rather than up to 24V. What is the amp rating? There is no current rating per se, only a power rating specification of 10W. Since the nominal output voltage is 16Vac, we can use that and the power rating to estimate that the maximum current is about 0.6 amps. My transformer was made in China. I would rate its quality of construction as "good." Help Bought a wireless system that does not work after 2 months push button does not work. This transformer does not install at the door, it usually is installed near your furnace and tied into the wiring for the actual chime box.
If you mean to re-install the pushbutton for the doorbell, then if you can reach the wires there to re-install the button, you may be able to solder an extension, however, that is chancy if you don't insulate properly. You may be stuck having to remove wood to extend the wires. How do I connect two doorbell chime wires to transformer screws? The output (screw terminals), of the transformer, is 10-16 VAC. Since it is AC, it does not matter where each wire goes. Just connect one wire to one screw, and the other wire to the other screw. Can I use this to run a 12 volt DC marine pump? Will this transformer fit an old nutone doorbell It should.....most old doorbells have a two wire that goes all the way back to the furnace where the transformer is mounted. I have no idea what kind of doorbell mine was, but the actual press mechanism was at the door and the doorbell was mounted above my thermostat on an interior wall. the wires then went down to the basement where the furnace was, so both sets of wires were controlled by the power lead to the furnace, thus why the transformer was mounted there.
You should be able to find your old transformer and be able to just remove and replace. Can I hook this up via power outlet cord The short answer is yes, you could use a power cord to wire power to the transformer as long as the cord is rated for 120V/1A and has a ground wire with ground plug. But your installation would probably not be compliant with the National Electrical Code. The transformer is designed to be installed on a code-compliant junction box. (See attached picture from the installation instructions.) You should connect wiring from a branch circuit to the transformer leads using wire nuts, which means that the connections must be enclosed in the junction box. And the transformer as well as the junction box must be accessible and unhidden. This is the proper method for installing the transformer. The best advice is to do it right the first time. About Best Sellers in Door Bell Transformers These lists, updated hourly, contain bestselling items. Here you can discover the best Door Bell Transformers in Amazon Best Sellers, and find the top 100 most popular Amazon Door Bell Transformers.
A doorbell runs on low voltage, which the transformer supplies. Doorbell transformers step down household current from 120 volts to around 16 volts. The doorbell transformer might be located anywhere in a home, but electricians typically install them near the home’s main electrical panel or near the heating and cooling system. Once you’ve located the transformer, you can test it with a simple, low-voltage test light, or get an accurate voltage reading with a multimeter. Locate the transformer box. These are typically only a couple of inches long, wide and deep with two narrow-gauge wires attached with screws. The narrow-gauge wires run to the doorbell buttons. Trace the wires back from those buttons. Set a multimeter to a low voltage setting -- often 25 AC volts on the meter, with “AC” signifying alternating current. You need not turn off the home's power to check the transformer. Be certain to place the probes on the two narrow-gauge wires leading away from the transformer, not the infeed wires, which carry 120-volt household current.
Touch one probe of the multimeter to each screw head on the transformer, where a thin wire leads toward the doorbell buttons. A reading of 16 volts indicates the transformer works properly. Less than 16 volts indicates the transformer needs replacing. Touch each probe of a low-voltage test light to each screw head on the transformer if you are not using a multimeter. If the lamp fails to light, the transformer is bad. Things You Will Need Multimeter or low-voltage test light Tip Warning References This Old House: How to Fix a DoorbellThe Family Handyman: Repair a Doorbell: Fix a Dead or Broken DoorbellDon Vandervort’s Home Tips: How to Check a Doorbell Transformer Photo Credits Thinkstock/Comstock/Getty Images Suggest a Correction Sign up or log in to customize your list. Here's how it works: Anybody can ask a question The best answers are voted up and rise to the top my doorbell stopped working and I tested it with a multimeter and found no current to the box.
How do I locate the transformer to replace it? Typically, the doorbell transformer will be on or near the main service panel. This is usually, done to save money on wire. If the transformer is mounted to the service panel, you'll only need about a foot or two of 14/2 cable to connect it (which can usually be reclaimed from scrap). The rest of the wiring from that point on will be cheaper low voltage cable, since doorbells typically run on 24V circuits. For your next home, make it a point to figure out what circuit it's on before the thing goes on you. If for no other reason to know when to tell people they have to knock should you have that circuit turned off for a repair. Start by checking various obvious places: utility room, attic, anywhere with exposed studs or joists. Narrow down your location by looking at the direction the wire from the doorbell goes into the wall. If it goes up, check the attic, and down, check the basement. At each location, check every junction box in the wall or ceiling to see if there's any extra wiring or device attached.