Underwriters laboratories and Electrical Testing Labs are testing and certification organizations for electronics and electrical products. They are both approved by the Occupational Safety and Health Administration (OSHA), a branch of the US federal department of labor. OSHA maintains a list of approved testing laboratories known as Nationally Recognised Testing Labs (NRTLs). These two popular labs have been operating for over 100 years. They are both trusted with the responsibility of conducting tests on products in many countries and issuing certificates for approved products.
Despite the similarities between them, some companies prefer one to the other. This is because both certification companies have their strengths and weaknesses. However, before examining these differences, let's look at both organizations.
Underwriters Laboratories is a science company that sets standards for different product categories and also tests, inspects, and certifies them. Underwriters Laboratories is committed to ensuring the safety of the public. Established in 1894, UL currently operates in more than 100 countries. Its headquarters is in Northbrook, Illinois, U.S.
Underwriters Laboratories is one of the testing laboratories approved by the Occupational Safety and Health Administration (OSHA) as a Nationally Recognized Testing Lab for a wide range of electrical products. They have more than 1500 approved standards for testing products and are considered one of the most reliable testing laboratories.
The Electrical Testing Laboratories, formerly called lamp testing bureau, is a UK-based company that is currently a division of Intertek Testing Laboratories. It started in early 1896 when Thomas Edison established the lamp testing bureau. The Occupational Safety and Health Administration (OSHA) also approved Electrical Testing Laboratories.
It tests and certifies products of different categories; however, the laboratory does not create its standards. It abides by the standards directed by other agencies like Underwriters Laboratories (UL), the American Society for Materials and Testing (ASMT), and the American Society of Mechanical Engineers (ASME). An ETL certification is given when Intertek approves a product.
The main difference between Underwriters Laboratories certification and Electric Testing Laboratories certification is that UL develops some of the standards it uses to test and inspect products alongside other standards mandated by other regulatory agencies.
However, ETL does not make its standards but only uses the standards required by other agencies, including Underwriters Laboratories.
Even though UL and ETL were established around the same period, UL has gained more popularity and is more recognized than ETL. Users who criticize ETL claim that UL is more rigid. This adds dignity to products that have a UL certificate.
Another difference is that conducting a UL test is more expensive than ETL. However, generally speaking, certification is expensive, and as a result, most companies mostly send product samples to be sold to companies that value high standards for testing.
Lastly, the popularity of UL certification, as opposed to the ETL certification, results in too many customers hence, a longer waiting list. Getting a UL certification takes a longer time compared to an ETL certification. Despite this factor, most producers still favor UL over ETL.
Product certification is mandated in the U.S. Seeing a certification mark from a reliable testing lab on a product ensures its safety and dependability. It is the process of testing and mainly certifying electrical products through approved testing laboratories to ensure that they are safe for customers.
In the United States, the NRTLs are the approved third-party testing laboratory for products. Successfully passing your product through tests in an approved laboratory boosts its confidence and convinces customers of its reliability. Some retailers or wholesalers will even refuse to stock electrical products that do not have a certification mark.
After a sample electrical product is sent to a testing laboratory, these are the main steps taken to test and certify the product.
Certification of electrical products is done in the United States by Nationally Recognized Testing Labs (NRTLs) overseen by the Occupational Safety and Health Administration (OSHA) to ensure the safety of a wide variety of electrical products used in the country. Two popular NRTLs are Underwriters Laboratories(UL) and Electrical Testing Laboratories (ETL).
Both testing laboratories are approved laboratories for testing, investigating, and approving electrical appliances according to the guidelines of some regulatory agencies. The aim is to guarantee that these products are non-hazardous for use and to ensure they pass the necessary safety parameters.
You can choose to get a UL certification mark or an ETL certification mark. Though UL has gained more recognition than ETL, there is little to no difference as both put electrical products through rigorous testing procedures.