Hey everybody, today we are going to talk about some ETL certificated guide of LED grow lights, to find out the detailed ETL certification requirements. Before entering today’s topic, sharing some knowledge about the main-role related certification: cannabis.
Short Introduction of Cannabis
Cannabis is a plant of the genus Moraceae, an annual erect herb. The characteristics of the growth environment are as follows:
The seeds can germinate at 1～3℃, the suitable temperature is 25～30℃; the seedlings can tolerate a low temperature of -3～-5℃, the suitable growth temperature during the seedling stage is 10～15℃; the rapid growth period is 19～23℃; The mature period is 18～20℃. In the case of a low temperature of -1～-2℃ during the flowering period, the flower organs die and cannot form seeds.
Cannabis is a light-loving, short-day crop, and late-maturing varieties are more sensitive to light.
History Review of Cannabis
Next, we review the development history of cannabis in the world:
On December 6, 2012, Washington State allowed the legalization of recreational marijuana.
On January 1, 2014, Colorado, as the nation’s first case, legalized marijuana trading.
On October 17, 2018, Canada legalized “recreational” cannabis across the country.
As of 2019, marijuana is legal in 33 states in the United States. The promotion and cultivation of cannabis nationwide in the United States and Canada ushered in a new upsurge.
Current Situation of ETL Certification
Due to the needs of the hemp growing environment, LED grow lights can greatly increase the production of hemp. We can see, there is large market demand. And ETL certification is one of the main certifications for lighting products in North America, and the special standard for plant growth lamps is UL 8800.
So far, there are 17 companies worldwide that have obtained ETL certificates (UL 8800) for LED plant growth lights. Among them, there are 9 in the Asia-Pacific region: 1 in Taiwan, 2 in Hong Kong, and 6 in the mainland (1 in Eastern China, 5 in South China).
ETL Certification Requirements(Detailed)
The special standard UL 8800 for plant growth lamps, since its release in May 2017, looks easy to apply, but it has caused many manufacturers and suppliers to worry about it. Today, we will focus on the UL 8800 standard requirements for plant growth lamps, the matters needing attention are as follows:
Guide #1. Product name
The product name on the certificate can only be: Horticultural Lighting
Guide #2. Operating Environment
- Suitable for Intracanopy Applications
Contact with plants, or between plants, equivalent to Wet location (need to meet rain and spray).
- Not suitable for Intracanopy Applications
Above the plant, it will not come into contact with the plant, which is equivalent to damp. (Currently, most of them are of this type on the market).
- IP rating
The standard has no requirements, but if you want to mark the IP rating, you must at least meet IP54.
- Metal shell
Good grounding, the grounding mark is as shown below (note: salt spray test is not required)
- The photobiological grade
Shall meet the requirements of the IEC 62471 standard.
- Plastic shell
UV-proof must meet the f1 rating.
If manufacturers are using interconnection in production, the connector needs to have UL\ETL certification and meet the voltage and current requirements.
The instructions should include the following information:
(1) The minimum distance between the lamps and lanterns; The minimum distance between the lamps and combustible surfaces such as ceilings, walls, etc.; The minimum distance between the lamps and other heating components.
(2) The ambient temperature of the lamp.
(3) How to connect the lamp to the power source.
(4) If there is a power cord, the following information should be included:
① Are not concealed or extended through a wall, floor, ceiling, or other parts of the building structure;
② Are not located above a suspended ceiling or dropped ceiling;
③ Are not permanently affixed to the building structure;
④ Are routed so that they are not subject to strain and are protected from physical damage;
⑤ Are visible over their entire length, and Are used within their rated ampacity;
American Safety Standards
The first edition of UL 8800 was officially promulgated on May 4, 2017.
Standard Application Range
Including lamps, but also lamp holders, wiring harnesses, plugs, connectors, light sources, drivers, ballasts, and structural parts.
Strict Environmental Requirements for Grow Lights
- The use environment of the plant growth lamp must be at least a humid environment, namely Damp Location.
- If there is dust in the environment where the lamp is used, an IP test can also be performed.
- IP testing is not mandatory, but if the manufacturers prefer to declare, it must be at least IP54.
- The ambient temperature of the plant growth lamp generally is high, so the temperature rise test often needs to be carried out according to the manufacturer’s claim, and the countermeasures when the ambient temperature exceeds the standard should be explained in the manual, for example: use strong exhaust or cooling system
Mechanical and Electrical Structure Requirements
- Evaluated according to UL1598 fixed fixtures.
- The material itself needs to have UV resistance or pass the UV test in UL 1598
Photobiological Radiation Safety Requirements
- Evaluated according to the IEC62471-Photobiological radiation safety test method for fixtures and lamp systems.
- Measuring range: Full spectrum test for wavelengths between 280-1400 nm, and classification of each band, a total of four levels: Risk Group 0, Risk Group 1, Risk Group 2, and Risk Group 3.
- The qualified judgment form is as follows:
|Risk Rating||Conclusion of the Test|
|Risk Group 3||Failed|
|Risk Group 2||Conditionally accepted, it is necessary to write the Risk Group level and the warning words corresponding to each spectrum band on the product label and manual|
|Risk Group 1|
|Risk Group 0||Passed|