What are the features of wet rated and damp rated lights?

What are the features of wet rated and damp rated lights?
Publish Date: 2021/09/18
Category: Article
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What are the features of wet rated and damp rated lights?

What are the features of damp-rated and wet-rated lights?

Whenever you want to buy or replace the lights of your yard or terrace, you may think about the humidity and resistance of the lights in rain and snow, this is very important and should not be underestimated. Familiarity with the protection indicators of electrical appliances against water and rain is crucial and will help in choosing the right light. In the previous article, we talked about IP index or protection index of electrical devices against moisture and dust, and in this article, we will get acquainted with two indicators, damp rated and wet rated. You may have come across terms such as the degree of moisture penetration or the degree of resistance of the light to water and steam. Terms such as wet rated or damp rated are used for lighting products and outdoor lights to indicate what appropriate environment should be for each of these products. The only difference between the two indicators is the amount of water exposure. In damp rated indicator, the lights should not be directly exposed to moisture, but the lights of the wet rated group can be directly exposed to water or rain. These two criteria are defined here with the aim of determining the appropriate environment for each lighting product. Please consider that lights that do not fall into these two categories are not at all resistant to moisture and water and should not be installed outdoors or near water.

Why are damp-rated and wet-rated indicators important in outdoor lights?

The main reason for considering these indicators is to create safety for human. The lights of the yard transmit electricity so water as a conductor of electricity can be dangerous and cause electric shock or fire. For this reason, it is necessary that the light bulb is well insulated to prevent rainwater and snow from penetrating into the lamp and fixtures. This is especially important for underwater and pool lights. It is very important to use the yard light according to the weather conditions of your place of residence, and considering these points will increase the life duration of the light. For this reason, using lights of dry environments in humid environments such as the north and south of Iran is not possible.

Where can a damp rated light be installed?

When you see the term damp rated in the specifications of the lights, it is actually talking about places that are not directly exposed to different weather conditions such as storms and rain due to the roof or special cover, so the light can be in Install there. The damp rated light will not have a problem if it accidentally comes in contact with raindrops or even installed in wet areas. You can also use anti-damp lights in the interior of the house, such as the bathroom and toilet, where the humidity is higher. These lights can also be used for outdoor and indoor areas such as terraces, balconies or pavilions. Basements are usually damp, and because of the high probability of sweating in these areas, it is best to use damp lights there.

In short, since damp rated lights are relatively resistant to moisture, they can be installed in the form of wall lights or pendant lights next to the entrance of the house.

Where can awet rated light be installed?

Wet rated lamps are lamps that can be installed in open areas and garden where there is a flow of water, such as inside the garden, pool, pond and fountain. Wet rated lamps can withstand moisture and wetness, and therefore must be made of completely insulating materials so that water does not penetrate into it and does not cause damage and danger. These lights can be installed outdoors in direct contact with snow and rain.


Almost all outdoor lights such as park lights, wall lights, headlights are exposed to rain and snow or fountain water, lake or plant irrigation, and most of these lights are anti-humid. These lights are used in interior decoration and you can install them in humid points of house such as bathroom and toilet and even in shower or bathtub.

The lights of Shabtab lighting industry are moisture and water resistant. Since these lights are installed in outdoor and humid areas such as the north and south of Iran, it is essential that they have the necessary standard for waterproofing and humidity, and this point is considered in design, manufacturing and selecting parts and also raw materials.


Knowing important concepts such as wet rated lights or damp rated lights will allow you to choose the most suitable type of fixtures for lighting up the yard and outdoor areas of your home. It also prevents damage and danger. Concepts such as IP index, anti-fog lamp and anti-moisture lamp are such that it is necessary to learn their meaning and application. In this article, we got acquainted with the two terms damp rated and wet rated lamps and talked about their applications in outdoor lighting.