By today's NEC standards, all kitchens are required to have to have a minimum of two 20 amp circuits.
It is a set of standard practices called the "National Electrical Code"
The purpose of NEC (National Electrical Code) specifications is to provide guidelines and standards for the safe installation and use of electrical systems. It helps to ensure that electrical systems are properly designed, installed, and maintained to prevent electrical hazards such as fires, shocks, and equipment damage. Compliance with NEC specifications is often required by law to promote public safety.
There is no minimum height specified by the NEC.
National Electrical Code (NEC)
The National Electrical Code (NEC) does not specify a minimum wire size for running wires in parallel. However, it is recommended to use wire sizes that are appropriate for the current load and to follow industry standards and best practices. Typically, wire sizes are chosen based on the current-carrying capacity needed for the circuit.
NEC Book each state uses different year codes
The minimum size conductor for industrial branch circuits is typically addressed in Article 210.19(A) of the National Electrical Code (NEC), which provides guidance on conductor sizing for branch circuits. It's important to refer to the specific version of the NEC that is currently adopted in your location, as code requirements may vary.
The sizing of cable trays in accordance with the National Electrical Code (NEC) is typically based on the maximum allowable fill capacity of cables within the tray. The NEC provides guidelines on the maximum fill capacity based on factors such as cable type, size, and insulation. It is important to follow these guidelines to ensure safe and efficient cable management within the tray.
The National Electrical Code (NEC) permits a minimum wire size of 14 AWG for general lighting and receptacle circuits in parallel installations.
The calculations for wire size ampacities are typically regulated by standards organizations such as the National Electrical Code (NEC) in the United States or the International Electrotechnical Commission (IEC) internationally. These standards outline the guidelines and formulas to determine the appropriate wire size for a given electrical load to ensure safety and compliance.
I assume your sizing the 20 amp from the breaker? NEC 240.3 states minimum conductor size for the rated ampacity of the circuit breaker. In this case, minimum size for 20 amp breaker is 12 AWG. I assume you are wiring a motor? I suggest you size your over current in accordance with NEC, start reading around NEC 430.