The work and findings described in this March 10 article suggest to me that NEMA members who manufacture motors should start watching developments in nanotechnology if they haven't already.  The article reports that "brush contacts made of carbon nanotubes had 10 times less resistance than did the carbon-copper composite brushes commonly used today."  That could lead to major improvements in efficiency and cooler operations.

Once these nano-enabled type contactors are commercially viable, the motor industry needs to work with the IEC TC 113 TAG to standardize the methods by which their electrical properties, and their reliability and durability are assessed.

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