NEC Code and Safety
According to the NEC, most appliance wiring requirements are covered in this article.
Article 422
Hardwired appliances are connected directly to this.
Circuit conductors
This kitchen appliance requires a dedicated 120V, 20A circuit if permanently installed.
A microwave
Room air conditioners operating at 120V should be connected to this
A dedicated circuit
A well pump circuit typically runs on these voltages.
120V or 240V
This NEC section requires GFCI protection for outlets within 6 feet of a sink.
210.8(A)(7)
A pigtail plug is commonly used with this appliance
An electric clothes dryer OR electric range
A garbage disposal is usually rated for this amperage.
5-10 A
A central heating system using a gas furnace is typically served by this type of circuit.
A 15A-20A circuit
A dishwasher installed within 6 feet of a sink must have this safety feature
GFCI Protection
This is the purpose of a disconnecting means for an appliance.
Allowing safe servicing and replacement
A 120V/240V appliance uses 120V for this purpose.
Powering motors and electronic components
A refrigerator should be connected to power in this way.
A dedicated 120V receptacle
This type of heater requires a 50A-60A, 240V circuit.
An Electric Furnace
The standard amperage for a freestanding electric range is in this range.
40A-50A
The 1996 NEC introduced this major change for appliance plugs.
The requirement for 4-prong plugs on certain appliances
A 120V/240V appliance uses 240V for this purpose.
Powering heating elements
Electric cooktops and ovens are generally supplied by this type of circuit.
A 120/240V dedicated circuit
Electric heating generates heat because of this property of electrical current.
Resistance
A 120V water heater differs from a 240V model because of this.
Used for "point-of-source" applications (i.e. undersinks)
This NEC article defines disconnecting means as a device or method to disconnect a circuit from its power supply.
Article 100
A 120V/240V appliance uses 120V for this purpose.
Double-Pole Breaker
A "whip" in relation to electric cooktops refers to this
A flexible metal conduit containing wire leads
This method of heat distribution is primarily used in electric baseboard heaters.
Convection
Wiring an outdoor hot tub requires this key safety feature
GFCI-protected circuit with a disconnect