Hi Paul, I could not put my finger on the paragraph that spells it out in the NEC, (380-4 has the 6 1/2 foot requirement) but I just installed a switch myself and the local inspector required it to be a min of 18" off of the ground.
Ray [email protected] -----Original Message----- From: Paul Smith [mailto:[email protected]] Sent: Tuesday, August 31, 1999 8:56 AM To: [email protected] Subject: US Circuit breaker requirements Could somebody dispel an 'urban myth' for me. UL 891 states that circuit breakers in Dead Front Switchboards shall be placed no higher than 6 1/2 foot (2 metres) from the base of the rack they are installed in. Thats fine and I can find the references fine in the UL specification. But, I am told that they can be placed no lower than 6 inches (or possibly even 18 inches) above the base of the rack they are installed in. This is the 'myth' I need some information on. I've read UL 891 but haven't found any reference to this matter in it (or if I did my brain was switched off at that point). What is the requirement for the minimum mounting height for circuit breakers in Dead Front Switchboards? Is it covered by UL891, or is it hiding in the NEC regulations? Any ideas? Paul Excite -- Control Yourself. This E-mail brought to you by Excite's free E-mail service. Get your own E-mail address at http://www.excite.co.uk --------- 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). --------- 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).
