But you can't just consider the tub size â they're all designed to be dropped into a deck, and that will take up more space, with the bare minimum adding at least a half-inch to your measurements on all sides.
Report Abuse. Scope: Dielectric Strength is a measure of the electrical strength of a material as an insulator. Dielectric strength is defined as the maximum voltage required to produce a dielectric breakdown through the material and is expressed as Volts per unit thickness.
In physics, the term dielectric strength has the following meanings: 1  Of an insulating material, the maximum electric field that a pure material can withstand under ideal conditions without breaking down (i.e., without experiencing failure of its insulating properties).