I am interested in the knowing what the most common causes of premature deterioration of electromagnets or magnetic coils in common industrial use today. I am mainly interested in situations where there is a gradual loss of magnetism or resistance in the these coils. I have listed here some ideas on what some of these causes might be but would greatly appreciate any input as to which if any of them are relevant.
- How uniformly the conductor may have been wound or how should it be wound.
- How pure the chemical composition of the conductor is or should be and how it relates to overheating.
- What kind of insulation has been used on the conductor before being wound or what should have been used if any. I would also appreciate any reading reference on this subject. Thank you.