English to Russian Tech/Engineering Electronics / Elect Eng коммутационный щит

Помогите перевести, пожалуйста: input inlets and load outlets

Входные отверстия провода ввода и выходные отверстия провода нагрузки?

Контекст:

Installation Description

Remove the retainers from the input inlets and the load outlets. Select the installation position, place the frame cutting template on the installation position, using a leveling instrument to ensure that the template is placed horizontally, then use a pen to draw a cutting line along the template, and use a cutting tool to cut a 325mm × 181mm rectangular slot for device inline installation.