Some questions about using a NEMA 4 cabinet: (1) Is the environment inside the cabinet considered pollution degree 1, no matter what the external environment is?
(2) We need to install a water drain at the bottom of the cabinet. Can we use a positive-acting valve without violating the cabinet's NEMA 4 rating? (3) The cabinet doors will need to be opened periodically for maintenance. How does this affect the pollution degree inside the cabinet? By the way, these questions are in the context of certifying the product under the CB 950 scheme. Thanks, Jeff Jenkins Advanced Energy Industries, Inc. --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
