Originally Posted by
injunjoe
I have no idea but how about you take note of the model number then rip into it and post the results.
As soon as you can get to the windings scrape the coating off and take a look see. If it's copper finish 'er off!
Model numbers will often tell you what the windings of the motor are made of along with other manufactures information.
Next time I'll try the INTERNET Model # search . I ended up searching with a sledge hammer, each one had a hefty amt of true copper . I have noticed with vac motors, i still have never found a Copper Clad. Maybe these type also .
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advantage to copper
Creep is the gradual deformation of a material from constant expansions and contractions under “load, no-load” conditions. This process has adverse effects on electrical systems: terminations can become loose, causing connections to heat up or create dangerous arcing. Copper does not creep or loosen at its connections. For other metal conductors that creep, extra maintenance is required to check terminals periodically and ensure that screws remain tightened to prevent arcing and overheating. These extra measures can be avoided with the use of copper wire.
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Coefficient of thermal expansion
Metals and other solid materials expand upon heating and contract upon cooling. This is an undesirable occurrence in electrical systems. Copper has a low coefficient of thermal expansion for an electrical conducting material. Aluminum, an alternate common conductor, expands nearly one third more than copper under increasing temperatures. This higher degree of expansion, along with aluminums lower ductility can cause electrical problems when bolted connections are improperly installed. By using proper hardware, such as spring pressure connections and cupped or split washers at the joint, it may be possible to create aluminum joints that compare in quality to copper joints
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Thermal conductivity
Thermal conductivity is the ability of a material to conduct heat. In electrical systems, high thermal conductivity is important for dissipating waste heat, particularly at terminations and connections. It is also important for reducing energy consumption due to the generation of waste heat.
Copper has a 60% better thermal conductivity rating than aluminum,so it is better able to reduce thermal hot spots in electrical wiring systems.
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I suspect some applications might not be able to be copper clad
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