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The NEC doesn't specify. Generally they are installed vertically with the ground on bottom.
In the world that I work in the ground is always installed on top. This is so if a gap exists between an outlet and the plug, anything falling into the gap hits the ground first and not across the hot and neutral wires simultaneously. Expanding on this premise an outlet installed horizontally with the neutral on top is the most safe installation. But I have never seen this done.
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Can you install 12G wire to receptacles and 14G wire from receptacles up to fixtures in 20A circuit?
No. In a 20 amp circuit all wire has to be 12 AWG or larger.
How do you wire receptacles in series?
Receptacles are not wired in series. Receptacles are actually wired in parallel, what this means is that all phase wires (black) in a receptacle's box should terminate to the brass screws on each device, and all neutral (white) wires in the box should terminate on the silver screws on each device.
What are skirted receptacles?
A commercial receptacle that is used to prevent arching.
How many electrical receptacles on 15 A breaker with 12 gauge wire?
In the United States and according to the NEC, in commercial and industrial installations, you are limited to 10 receptacles on a 15 amp circuit. The size of the wire is not a determining factor. There is no limit to the number of receptacles on a circuit in a home and there may be local codes where you live that have stricter requirements.
Are bag and sack both receptacles?
Yes, the are both containers in which something can be placed inside.
Should Bituthene be applied vertically or horizontally?
Roll roofing should be installed horizontally across the rise of the roof, NOT vertically from edge up to peak.
What is a plumbing chase?
A column also called a wet column where pipes are installed either vertically or horizontally.
Does expanded metal lath get installed vertically or horizontally?
It gets installed horizontally across the vertical framing members. Code requires 1" lap on the vertical joints and 1/2" lap on the horizontal joints.
Does the rook in chess attack vertically horizontally or diagonally?
both vertically and horizontally
Do trees grow horizontally or vertically?
vertically and horizontally. Vertically, they get taller as new growth sprouts from the top every year. Horizontally, they get thicker and branches get longer.
A worksheet has rows that run vertically and columns that run horizontally?
No, in a worksheet rows run horizontally and columns run vertically.
Is it better to store comics horizontally or vertically?
Horizontally
Does the rhizome of a fern grow vertically or horizontally?
horizontally
Who will reach first a man coming vertically down or horizontally down why?
vertically is up and down horizontally is side to side. vertically would be first
Does an earthworms anal slit run vertically or horizontally?
vertically
What is the furthest distance an object has been thrown by a human vertically and horizontally?
Horizontally
How is music organized vertically and horizontally?
Greek philosophers and medieval theorists defined music as tones ordered horizontally as melodies, and vertically as harmonies.
