I also agree with Rich Nute and Richard Woods. However, there may be some customer base that would like to see a listing mark on the product. In this case it is a marketing gimic. Additionally, if a competitor goes through the motions of listing their product and your product is not (even though it's not required), a competitor can still use it to his advantage. I have seen this first hand. Depending on the customer base, some may be able to understand that it is not reuqired, but others may not be technically knowledgable and will not understand the issue.
It's a judgement call. John A. Juhasz Product Qualification & Compliance Engr. Fiber Options, Inc. 80 Orville Dr. Suite 102 Bohemia, NY 11716 USA Tel: 516-567-8320 ext. 324 Fax: 516-567-8322 -----Original Message----- From: WOODS, RICHARD [mailto:[email protected]] Sent: Monday, June 28, 1999 8:41 AM To: [email protected] Subject: RE: NRTL Listing I am in basic agreement with Rich. My company makes two types of low voltage products. One type is permanently installed and one is movable. We always use a certified Class 2 or Limited Power Source. Normally we do not obtain certifications for our moveable devices since they are not normally subject to inspection by an electrical inspector. However, experience has shown that the electrical inspectors do ask a lot of questions about the permanetly installed devices, so to prevent the hassle, we do obtain certs on those. However, my understanding of the US and Canadian Electrical codes is that certification is not required for devices powered by a Class 2 source. I once asked the leading manufacture of home intercom/radio equipment is they obtain UL Listing and they said they have never obtained Listing for their Class 2 powered equipment. ---------- From: Rich Nute [SMTP:[email protected]] Sent: Friday, June 25, 1999 8:03 PM To: [email protected] Cc: [email protected] Subject: Re: NRTL Listing Hi Joe: > liability and such. Can anyone share some more info as to their reasons for > listing or not listing such a product which is well below hazardous limits. There are two schools of thought: 1. Because of its low-voltage supply, the unit is exempt from most safety certifications throughout the world. Therefore, there is no need to obtain any safety certifications. 2. Regardless of being exempt, customers expect most electrical products to bear safety certification marks. Indeed, OSHA and NEC electrical inspectors (and customs inspectors) cannot make field judgements as to whether an electrical product is exempt from safety certification. The presence of the marks assure acceptance without your intervention. I suggest that the decision should be based on your customer base, where the product is used, your company, the product, and the possible difficulties you might encounter without the marks. Any difficulties will have a cost in (1) delaying the product to the customer, and (2) your time to resolve, for the various inspectors, the fact that the product does not require the safety certification. For example, low-voltage products going into the home are not likely to be subject to discrimination due to safety certification marks. On the other hand, products going into the workplace, being part of an electrical installation, or going across borders may very well be subject to inspection for certification marks. Have fun! Rich --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators). --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators). --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators).
