From: Martin Ansdell@MITEL on 03/19/99 09:20 AM Hello,
This is the first time that I've replied to TREG, so I hope all goes well. UL requires two levels of protection. Class I equipment uses protective earth as one level, so the protective earthing terminal has to be permanent and hence the "stud on the chasis" method. Class II equipment satisfies two levels of protection without reliance on protective earth. Earth is only present for operational requirements. Could you confirm whether your competitor's equipment is Class I or Class II. The class makes a significant difference in the earthing requirements. Regards, Martin. From: [email protected] on 03/18/99 11:47 PM ZE2 Please respond to [email protected] To: [email protected], [email protected] cc: (bcc: Martin Ansdell/Kan/Mitel) Subject: Protective Earthing Terminal
