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National Electrical Code 2014
Chapter 2 Wiring and Protection
Article 210 Branch Circuits
210.52 Dwelling Unit Receptacle Outlets.
(C) Countertops. In kitchens, pantries, breakfast rooms, dining rooms, and similar areas of dwelling units, receptacle outlets for countertop spaces shall be installed in accordance with 210.52(C)(1) through (C)(5).
(1) Wall Countertop Spaces. A receptacle outlet shall be installed at each wall countertop space that is 300 mm (12 in.) or wider. Receptacle outlets shall be installed so that no point along the wall line is more than 600 mm (24 in.) measured horizontally from a receptacle outlet in that space.
Exception: Receptacle outlets shall not be required on a
wall directly behind a range, counter-mounted cooking
unit, or sink in the installation described in Figure
210.52(C)(1).
Så om du hade en rak 28 "bänkskiva, utan handfat, intervall, kylskåp, etc. Då behöver du minst 7 behållare, om du vill vara kodkompatibel.
Om du dock har sänkor, intervall, kylskåp etc. Då kommer varje bit av bänkskivan att betraktas som en egen separat bänkskiva.
(4) Separate Spaces. Countertop spaces separated by rangetops, refrigerators, or sinks shall be considered as separate countertop spaces in applying the requirements of 210.52(C)(1). If a range, counter-mounted cooking unit, or sink is installed in an island or peninsular countertop and the depth of the countertop behind the range, counter-mounted cooking unit, or sink is less than 300 mm (12 in.), the range, counter-mounted cooking unit, or sink shall be considered to divide the countertop space into two separate countertop spaces. Each separate countertop space shall comply with the applicable requirements in 210.52(C).
Om du har ett bänkutrymme som är 4 eller mindre behöver du bara en strategiskt placerad behållare. 8'1 "till 12" skulle kräva tre behållare, 12'1 "till 16" behöver fyra osv.