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Kent

Post subject: Copper wire resistance

Unread postPosted: Thu Dec 23, 2004 11:10 am

We are working on a new electronic sensor device which requires the

periodic measurement of a 28AWG kynar insulated copper wire loop

(ten feet long) under varying ambient temperatures.

Since the electrical resisitivity of copper increases linearly with the

ambient temperature, we know the following facts about copper

wire at a temperature of 20C:

10.09 (ohm-cmil/ft) 1.678 (micro-ohm-cm)

Our problem is that we need to know the electrical resisitivity of copper

wire at each degree reading between -20C and +70C ( in addition to

the electrical resisitivity we know that copper has at 20C).

If anyone has a suggestion or reference for further information, please

advise as soon as possible.

Thanks in advance for your help in this matter.

Posted  11/12/2012


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