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Re: SMEE

Posted by Jeff H. on Tue Apr 25 19:45:30 2006, in response to Re: SMEE, posted by Railman718 on Tue Apr 25 07:10:36 2006.

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Yes, copper tubing is allowed on transit cars.

For the pressures encountered in air brake work, Schedule 40
pipe is most certainly sufficient. The reason the AAR requires
Schedule 80 is for mechanical integrity, much in the same way that
AREMA signal standards call out no smaller than 16ga wire inside
signal cases. For the current being handled, 24ga would be just
fine in most of the "logic" circuits, but it isn't mechanically
robust enough.

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