Article 100 Bathroom.

A bathroom is an area with a sink (basin) and one or more of the following: a toilet, a urinal, a tub, a shower, a bidet, or similar plumbing fixtures.
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A bathroom is an area with a sink (basin) and one or more of the following: a toilet, a urinal, a tub, a shower, a bidet, or similar plumbing fixtures.

Code Change Summary: Revised code definition.

In the 2020 NEC, the definition of a bathroom has been slightly revised to bring clarity to the word “basin”. The intended meaning of the definition is to address a room with a sink and at least one or more of the following: a toilet, a urinal, a tub, a shower, a bidet, or similar plumbing fixtures.

Using the word “basin” without further explanation doesn’t align with the way the word is used in other code sections. For example, in Section 450.27, the word “basin” is used to describe a trench, drainage ditch or retention basin. Same thing in NEC Table 515.3, Section 682.1 and the list goes on.

Below is a preview of the NEC. See the actual NEC text at NFPA.ORG for the complete code section. Once there, click on their link to free access to the 2020 NEC edition of NFPA 70.

2017 Code Language:

Article 100.

Bathroom. An area including a basin with one or more of the following: a toilet, a urinal, a tub, a shower, a bidet, or similar plumbing fixtures.

2020 Code Language:

Article 100.

Bathroom. An area including a sink (basin) with one or more of the following: a toilet, a urinal, a tub, a shower, a bidet, or similar plumbing fixtures.

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Article 100 Bathroom.

Below is a Real Question from our Electrical Continuing Education Courses for Electrical License Renewal:

According to the 2020 NEC definition, which of the following is a bathroom?

A: A room with only a sink and a toilet.
B: A room with only a shower and a toilet.
C: A room with only a bathtub and a toilet.
D: A room with only a urinal and a toilet.
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