What does L and N mean on wires?

Neutral and Load
The N & L stand for Neutral and Load. With your AC line in you should have three wires. Neutral, Load, and Ground. If your wires are color coded for the US then the black wire is Load or Hot, the white wire is Neutral, and the green wire is Ground.

What is the formula of plus and minus?

Addition/Subtraction Formulas: (-) + (-) = – (+) + (-) = + (The absolute value of positive number is bigger) (+) + (-) = – (The absolute value of negative number is bigger)

What does L and N mean in electrical wiring UK?

Line (L; formerly, live, or phase) Power-carrying core/wire in a typical low-voltage or domestic installation; colour-coded. brown (pre-2004: red). Neutral (N) Power-carrying core/wire in a typical low-voltage or domestic installation, usually bonded to earth (ground) voltage by the supplier; colour-coded.

How do you subtract minus plus?

Addition and Subtraction Two ‘pluses’ make a plus, two ‘minuses’ make a plus. A plus and a minus make a minus.

How do you do plus-minus?

Microsoft Word offers a pre-defined shortcut key for some symbols such as plus-minus sign and minus-plus sign:

1. Type 00b1 or 00B1 (does not matter, uppercase or lowercase) and immediately press Alt+X to insert the plus-minus symbol: ±
2. Type 2213 and press Alt+X to insert the minus-plus symbol: ∓

How do I know if my house is grounded?

Look at the outlets in your home. The first sign of proper grounding is whether you have two-prong outlets or three. A three-prong outlet has a narrow slot, a larger slot and a “U-shaped slot.” The U-shaped slot is the grounding component.

What is L and N in electricity Australia?

The active wire (high potential) is coloured brown (used to be red). The neutral wire (low potential) is coloured blue (used to be black). The earth wire is striped green and yellow (used to be only green).

What is the symbol for Plus and minus in math?

For the symbol “±”, see Plus-minus sign. The plus and minus signs, + and −, are mathematical symbols used to represent the notions of positive and negative, respectively. In addition, + represents the operation of addition, which results in a sum, while − represents subtraction, resulting in a difference.

Who invented plus and minus signs in physics?

In physics, the use of plus and minus signs for different electrical charges was introduced by Georg Christoph Lichtenberg . 4 ). If the charge is greater than 1, a number indicating the charge is written before the sign (as in SO 2− 4 ).

What is the difference between minus sign and tone letter?

The minus sign is also used as tone letter in the orthographies of Dan, Krumen, Karaboro, Mwan, Wan, Yaouré, Wè, Nyabwa and Godié. The Unicode character used for the tone letter (U+02D7) is different from the mathematical minus sign.

How do you use plus and minus signs on a computer?

Plus and minus signs are often used in tree view on a computer screen—to show if a folder is collapsed or not. In some programming languages, concatenation of strings is written “a” + “b”, and results in “ab” . In most programming languages, subtraction and negation are indicated with the ASCII hyphen-minus character, -.