In certain embodiments, the potting spacer is provided with a through hole through which an electrical conductor passes, wherein the potting spacer includes a first portion and a second portion hinged together, the electrical conductor can enter the through hole when the first portion and the second portion are in an open status, and the electrical conductor is mounted in the through hole after the first portion and the second portion are assembled together.

In certain embodiments, the electrical conductor connects the first electrical element to the second electrical element.

In certain embodiments, the first portion and the second portion are assembled by a groove and a protrusion which fit each other.

In certain embodiments, the through hole is provided with at least one contact rib on a surface in contact with the electrical conductor.

In certain embodiments, the potting spacer is formed into a single piece.

In certain embodiments, the potting spacer comprises a first dividing sidewall which faces the first sub-chamber and a second dividing sidewall which faces the second sub-chamber, and a positioning portion is disposed on at least one of the first dividing sidewall and the second dividing sidewall, the positioning portion locating the potting spacer in position in the chamber.

In certain embodiments, the potting spacer is made of rubber.

In certain embodiments, the electrical apparatus is formed into a charging apparatus for a vehicle, or an inverter, or a direct current-direct current converter.