So I was changing bulbs attached to Dimmer Modules to LED bulbs. Even though the module is OFF, some voltage was getting through and the LED were partially lit up. I checked voltage, while off. One module showed 2 volts another 116 volts....Say what? How am I to understand this "leakage" while off....?
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You are seeing the local control sensing voltage in the dimmer modules and is normal.
The triac in the dimmer circuit may also have some leakage.
You will probably see in the modules users guide. They are made for incandescent bulbs.
I have seen some fixes like adding a resistor across the LED bulb socket as a fix.
You will also find the LED brand and model. Makes a difference. Some glow more some not at all
If you had a load on the meter leads you may see 0 VAC as you are probably using a meter with a high impedance on it input.
Check the LED bulb's package and confirm it is designed for a dimmer. Should say something like dimmable. Not all LED bulbs are designed to be on a dimmer. -
It is not uncommon for dimmer modules to allow a small amount of voltage to pass through even when they are turned off. This is often referred to as "leakage current" or "ghost voltage."
The amount of voltage that is present can vary depending on several factors, including the quality of the dimmer module, the type of LED bulbs being used, and the wiring in the electrical system.
In general, a small amount of voltage (less than 5 volts) is not typically a cause for concern and is unlikely to cause any issues with your LED bulbs. However, if you are seeing significantly higher voltages, such as the 116 volts you mentioned, it may indicate a problem with the dimmer module or the wiring in your electrical system.
It is always a good idea to consult with a licensed electrician if you have any concerns about the safety of your electrical system or if you are experiencing any unusual behavior from your dimmer modules. They can help identify any issues and make any necessary repairs or upgrades to ensure that your system is operating safely and efficiently.Comment
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It's not uncommon for dimmer switches to leak a small amount of voltage even when they are in the off position. This is because the switch is still connected to the hot wire, and there is always a small amount of current flowing through the wires. This current can be enough to cause LED bulbs to glow faintly.
The amount of leakage voltage can vary depending on the type of dimmer switch and the wiring in the circuit. In your case, it sounds like one of the dimmer switches is leaking significantly more voltage than the other. This could be due to a faulty switch or a problem with the wiring.
If you are concerned about the leakage voltage, you can replace the dimmer switches with ones that are specifically designed for LEDs. These switches have a lower leakage current and will not cause your LED bulbs to glow.
Here are some additional things to keep in mind about dimmer switches and LED bulbs:- Not all dimmer switches are compatible with LED bulbs. Make sure to check the compatibility of the switch before you install it.
- Some LED bulbs are more sensitive to leakage voltage than others. If you are having problems with a particular bulb, try replacing it with a different brand or model.
- If you are still concerned about leakage voltage, you can install a filter between the dimmer switch and the light fixture. This will help to block the leakage current and prevent your LED bulbs from glowing.
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