Mike, Is someone needs to work on one sub-system the manual will direct them to unlug, disconnect, the power cord for that specific sub-system.
However, there may be a need to bring down the entire system, and so the facility disconnect. Thanks. > On 05/15/2023 9:06 PM MIKE SHERMAN <[email protected]> wrote: > > > Steve -- > > Fun questions! > > (I am a person with documented tendencies to not take the trouble to go > to a breaker panel to find and disconnect the correct breaker, so I may be > taking a different approach here...) > > Nameplate > I regard the nameplate as information for the installing electrician on > how to size the facility breaker and the wiring to the equipment (ceiling > panel). So I agree with your approach, from what I understand from your > description. > > Labels and LOTO > I would explore, with your client, any incentives for the user to simply > disconnect the power cord for a single subsystem from the ceiling panel to > work on that subsystem, so that the entire system would not have to be taken > down and restarted. If that seems reasonably foreseeable, you may need > additional risk mitigations beyond what you propose. > > Good to see you at ISPCE, too! > > Mike Sherman > Sherman PSC LLC > > > > > > On 05/15/2023 6:25 PM CDT Steve Brody > <[email protected]> wrote: > > > > > > Experts. > > > > First, it was good to see those who were at ISPCE in Dallas. > > > > Back to the question at hand, and a proposed solution. But I still > > request ay comments/inputs. > > > > I have a client who makes products to their customer's > > requirements. The end product includes several products, sub-systems, that > > work together in the end product to perform the intended task. > > > > Each of the subsystems has its own power cord that plugs into an > > outlet in a ceiling panel which has an outlet for each of the sub-systems. > > > > Power to the ceiling panel is derived from a single facility panel > > that has a LOTO breaker. > > > > It is my thought that the following should be done: > > * The system nameplate current rating should be inclusive of > > all sub-systems and system power > > * that there be a label adjacent to the nameplate indicating > > that there are 'x' number of power cords, and that the disconnect for the > > systems the facility panel number > > Thoughts? > > > > Thanks in advance, > > > > Steve Brody > > [email protected] mailto:[email protected] > > C - 603 617 9116 > > - > > ---------------------------------------------------------------- > > > > This message is from the IEEE Product Safety Engineering Society > > emc-pstc discussion list. To post a message to the list, send your e-mail > > to <[email protected] mailto:[email protected] > > > > > All emc-pstc postings are archived and searchable on the web at: > > http://www.ieee-pses.org/emc-pstc.html > > > > Website: http://www.ieee-pses.org/ > > Instructions: http://www.ieee-pses.org/list.html (including how to > > unsubscribe) http://www.ieee-pses.org/list.html > > List rules: http://www.ieee-pses.org/listrules.html > > > > For help, send mail to the list administrators: > > Mike Cantwell <[email protected] mailto:[email protected] > > > > > For policy questions, send mail to: > > Jim Bacher <[email protected] mailto:[email protected] > > > David Heald <[email protected] mailto:[email protected] > > > > > > > --------------------------------------------- > > > > To unsubscribe from the EMC-PSTC list, click the following link: > > https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1 > > > > > - > ---------------------------------------------------------------- > > This message is from the IEEE Product Safety Engineering Society emc-pstc > discussion list. To post a message to the list, send your e-mail to > <[email protected] mailto:[email protected] > > > All emc-pstc postings are archived and searchable on the web at: > http://www.ieee-pses.org/emc-pstc.html > > Website: http://www.ieee-pses.org/ > Instructions: http://www.ieee-pses.org/list.html (including how to > unsubscribe) http://www.ieee-pses.org/list.html > List rules: http://www.ieee-pses.org/listrules.html > > For help, send mail to the list administrators: > Mike Cantwell <[email protected] mailto:[email protected] > > > For policy questions, send mail to: > Jim Bacher <[email protected] mailto:[email protected] > > David Heald <[email protected] mailto:[email protected] > > > > --------------------------------------------- > > To unsubscribe from the EMC-PSTC list, click the following link: > https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1 > Steve Brody [email protected] mailto:[email protected] C - 603 617 9116 - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]> _________________________________________________ To unsubscribe from the EMC-PSTC list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1
