In this section the following words have the meanings indicated. “Barbecue grill” means equipment used for outdoor cooking that uses as its heat source electricity or the burning of charcoal, liquid propane gas, or other fuel. “Residential dwelling” means a building or part of a building that provides living or sleeping facilities for one or more individuals. “Residential dwelling” includes a multifamily residential dwelling, hotel, motel, boardinghouse, lodging house, rooming house, inn, club, or dormitory. “Residential dwelling” does not include: a single family residential dwelling; or a multifamily residential dwelling in which the individual dwelling units are arranged in a row, side by side, and not constructed above each other. In Charles County and Wicomico County, a person may not use a barbecue grill: on a balcony of a residential dwelling; and within 20 feet of any part, including a balcony, of a residential dwelling. A person who violates this section is subject to the penalties of § 6-601 of this article.