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| Re: SMEE (245883) | |||
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Re: SMEE |
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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. 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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