The following is from a separate e-mail I sent to Richard Stone that I though the rest of the group might find interest in. In this e-mail exchange, the US NEC was referenced and so the following is based on the US NEC.
<begin> In your post, you did not specify whether the conductors were a part of the supply source or internal to the equipment. However, based on your described application (use of ring lugs) and that you were claiming the No. 6 AWG conductor is good for 63A, it seemed evident that these weren't supply conductors. The final judge of the suitability, then, is the wire insulation for the additional temperature the wire will see. If these _are_ supply conductors, both paralleled No. 10 AWG and a single No. 6 AWG are too small and you'll need to revisit the NEC to find the appropriate size and temperature rating. Best case, per NEC Table 310-16 for 60C building wire: No. 10 AWG, 60C wire is good for maximum 30A and No. 6AWG is good for 55A. Any increases in in ampacity must come from using a more specific and tightly controlled wiring systems or increases in conductor temperature rating. Your reference to NEC 310-4 must be to Exceptions No. 2, 3 or 4, but this could be a misuse of those Exceptions, unless you meet all of the criteria in the applicable exception. <end> > -----Original Message----- > From: Peter Tarver > Sent: Friday, August 17, 2001 9:14 AM > > Yes. > > Regards, > > Peter L. Tarver, PE > Product Safety Manager > Sanmina Homologation Services > peter.tar...@sanmina.com > > > -----Original Message----- > > From: owner-emc-p...@majordomo.ieee.org > > [mailto:owner-emc-p...@majordomo.ieee.org]On > > Behalf Of Stone, Richard A > > (Richard) > > > > Group, > > > > can you substitute one large wire 6 awg. > > handlles 63 amps. max ) > > for two smaller wires ( 10 awg. carries 32 amps. > > max. ) in Parallel. > > They would 1/2 the current and disperse heat better. > > > > The accepting screw terminal would allow for > > proper threading and tightness > > of connection. > > since you would have 2 ring lugs on one terninal > > instead of two. > > > > thank you, > > Richard, ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: pstc_ad...@garretson.org Dave Heald davehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on "Virtual Conference Hall,"
