Electrical installations in bathrooms and bath or shower rooms, saunas, swimming pools and fountains

The aim of this manual is to familiarise building investors, designers, electrical installation companies, inspection technicians, and also interested members of the public with the basic requirements for electrical installations in bathrooms, and in other areas with a bath or shower, in saunas, swimming pools, and fountains, and the principles for their implementation, particularly from the point of view of the legislative regulations and technical standards valid at the time of the manual's creation.

The text is updated in accordance with technical standards and legislative regulations issued since 2021, in particular ČSN 33 2000-7-701 ed. 3, ČSN 33 2130 ed. 4, Decree No. 146/2024 Coll., and others.

The manual introduces the reader to the new requirements for electrical installations in bathrooms, washrooms, and areas with a bath or shower, in saunas, swimming pools, fountains, in washing areas and sanitary facilities.

This third edition also includes answers to frequently asked questions on this topic.

The subject matter deals with the implementation of electrical installations in the aforementioned areas in general, i.e., in residential and civic buildings, healthcare, as well as in industry and buildings for sporting purposes.

The content of the manual is divided into several chapters that focus on:

- technical requirements for electrical installation in areas with a bath and/or shower, in relation to washing areas, in relation to swimming pools and fountains, saunas, and the issue of showers and electrical equipment in toilets and similar spaces,

- basic legislative regulations affecting the design and execution of the described works, requirements for the design and execution of the work, related standards, the issue of external influences and the definitions used.

This third edition is also supplemented with options for modernising older electrical wiring using new devices.

The manual is intended for a wide professional audience: from electrical installation designers, investors and employees of installation companies, through to inspection technicians, and even members of the public interested in this issue who want to have an overview when commissioning a professional company or a self-employed person operating in the field of electrical installations.

It can also be used by students of electrical engineering, masters of vocational training at vocational schools, and teachers at secondary and higher levels of education.