Voltage rating is one of the most basic, fundamental ratings associated with electrical wire and cable, given in volts. Voltage itself is a measurement of electrical potential, calculated by multiplying a given electrical current (in amperes, I), by the resistance of a conductor, (in ohms, Ω). The material of the conductor, as well as the thickness, will all impact resistance. These things, being variables from which voltage is drawn, affect voltage rating. Think of voltage as the force “pushing” the electricity through a wire or cable, similar to how plumbing pipes experience line pressure, except that line pressure is measured in PSI instead of volts. Just like with water pipes, it is essential never to exceed the voltage rating of a given conductor - but instead of a burst pipe, exceeding the voltage rating of an electrical conductor can cause overheating, fires, and an elevated risk of dangerous electrical shock. But what exactly is a wire’s voltage rating? So, What Really I