Looking at a knockout in a box for 20mm conduit, it seems to be 20mm. My technician, who was an electrician, has never come across 16mm conduit. I would have thought that if the OD was 16mm, and it was then threaded to take a nut, it would go thru a 16mm hole. regards, John Crabb, Development Excellence (Product Safety) , NCR Financial Solutions Group Ltd., Kingsway West, Dundee, Scotland. DD2 3XX E-Mail :[email protected] Tel: +44 (0)1382-592289 (direct ). Fax +44 (0)1382-622243. VoicePlus 6-341-2289.
> -----Original Message----- > From: Jim Eichner [SMTP:[email protected]] > Sent: 23 September 1999 18:49 > To: 'EMC-PSTC - forum' > Subject: EN60950 - conduit entry dimensions > > > Greetings all: In clause 3.2.2 allows the provision of knockouts, cable > entries, etc. in lieu of a non-detachable power cord for permanently > connected equipment. In Table 10, it lists the overall diameter of > conduit based on the number of conductors involved, up to 16A. > > In my particular application, there are 2 wires plus earth, and the > current (and the branch circuit protection) is less than 16A, so the > table tells me I need a knockout that can accommodate a 16.0mm O.D. > conduit. If things are done there anything like they are done here, > this 16mm conduit will be secured in a fitting of some sort, and the > knockout needs to be matched to the fitting, not the conduit (i.e. a > 16mm hole is likely too small). > > Is there a reference, or can anyone tell me, what the appropriate sized > hole will be? Is this standardized somewhere? > > Thanks in advance for your help, > > > Jim Eichner > > Senior Regulatory Compliance Engineer > Statpower Technologies Corporation > [email protected] > http://www.statpower.com > Any opinions expressed are those of my invisible friend, who really > exists. Honest. > > --------- 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).
