National Electrical Installation Standards

Standards as High as Your Own

Monday, January 23, 2023


Hello CQD. Can Table 220.55 be used to calculate the branch circuit load for any combination or quantity of appliances, or is it limited to what is permitted in Note 4? Thanks, Erik Kruck


Hi Erik, thanks for your question. Section 220.55 and the application of Table 220.55 are limited to the following household cooking appliances:

-        Household electric ranges

-        Wall-mounted ovens

-        Counter-mounted cooking units

-        Other household cooking appliances rated in excess of 1¾ kW.

 Note 4 provides some specific conditional requirements for certain applications:

-        It permits the branch-circuit load for one (1) range to be calculated using Table 220.55.

 -        It specifies that the load of one (1) wall mounted oven or one (1) counter-mounted cooking unit shall be determined by the nameplate value.

 -        It permits the load for one (1) counter-mounted cooking unit, and not more than two (2) wall-mounted oven(s), all supplied from a single branch circuit and located in the same room to be calculated by adding all of the nameplate values together and treating that value as a single electric range.

 Note 4 can only be applied using the combinations listed in the note.

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