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from The Century Dictionary and Cyclopedia

  • To expand at the end to form a cup or pot: said of electrical cables which, when used for very high voltages, have their covering or armor spread out to form a cup, which is then filled with insulating material. The armor is usually of lead, hence the potheading can easily be done, and prevents short-circuiting between the cable and cover or armor.


Sorry, no etymologies found.



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