Mutual inductance in a Conductor

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SUMMARY

In the discussion regarding mutual inductance in a conductor composed of steel and aluminum (ACSR), it is established that mutual inductance does not occur between the two materials when they are in direct contact. The consensus is that mutual inductance requires insulated conductors, as seen in typical examples where insulated wire is wrapped around a core. Since the bare aluminum and bare steel are touching, they do not meet the criteria for mutual inductance.

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derek88
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Friends:

Lets say you have a conductor that is made of two components - an inner core of steel and an outer layer of aluminum (ACSR). Is there mutual inductance between the steel and the aluminum? Every example of mutual inductance I have seen requires that an insulated wire be wrapped around some core. In this case, the steel and aluminum are not insulated. Bare aluminum forms a tubular cylinder around the bare steel. They are touching.

I appreciate any ideas! Thanks.
 
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I believe mutual inductance occurs between two conductors that are not electrically connected, so in your case i don't think so.
 

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