Re: [PSES] UL Standards - Old School Spacings

2022-01-25 Thread MIKE SHERMAN
Doug -- Joe Musso, staff engineer at UL, might be worth contacting. About 10 years ago I was is a similar position with what I considered an outdated spacings table in UL 1450. Joe was the staff engineer supporting 1450 at the time. What Joe suggested, and what ended up working out well, was

Re: [PSES] UL Standards - Old School Spacings

2022-01-25 Thread Douglas E Powell
ilable in Dropbox. > > > > Best regards, > > Rich > > > > > > > > *From:* Douglas E Powell > *Sent:* Tuesday, January 25, 2022 10:27 AM > *To:* EMC-PSTC@LISTSERV.IEEE.ORG > *Subject:* [PSES] UL Standards - Old School Spacings > > >

Re: [PSES] UL Standards - Old School Spacings

2022-01-25 Thread Richard Nute
by e-mail. If you are interested in studying this text, I can make this available in Dropbox. Best regards, Rich From: Douglas E Powell Sent: Tuesday, January 25, 2022 10:27 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] UL Standards - Old School Spacings All, I'm

Re: [PSES] UL Standards - Old School Spacings

2022-01-25 Thread Douglas E Powell
Sorry all, I knew the listserv would not support images, but since it regularly sends me HTML email, I had thought it would allow tables in the body of the email . Hopefully you'll still get the gist of the email. ~Doug On Tue, Jan 25, 2022 at 11:26 AM Douglas E Powell wrote: > All, > > I'm

[PSES] UL Standards - Old School Spacings

2022-01-25 Thread Douglas E Powell
All, I'm interested in learning the history behind what I call old school spacings found in UL standards. In recent years there has been considerable progress toward harmonizing UL spacings to international standards, derived from IEC 60664-x. However, still today I encounter many UL standards