N

15 Posts in this encyclopedia category

NEC

Abbreviation for National Electrical Code. Standard set of standards for the safety of electrical devices such as electrical apparatus installations in the low voltage range up to 600 V - USA. (All information without guarantee)

NEMA

Abbreviation for National Electrical Manufacturers Association. NEMA creates and distributes standards for cables and wires together with IECA. Washington D.C., USA. (All data without guarantee)

NEMCO

Norwegian testing authority, similar to VDE in Germany. (All data without guarantee)

NEN

Nederlands Normalisatie Iinstituut. Netherlands (All information without guarantee)

Neoprene®

Trade name of the company DuPont de Nemours for synthetic rubber made of chloroprene rubber. (All data without guarantee)

Network

Line network used to establish connections between data stations. (All information without guarantee)

Neutral conductor

Neutral conductors, if present, must not have a smaller cross-section than the phase conductor. According to VDE 0100 Part 520, Section 524.2 (All information without guarantee)

Neutral or earth conductor

In electrical circuits with more than two conductors, the neutral conductor is the currentless centre conductor under symmetrical load. It can be used for neutralisation. Neutral or earth conductors can have different sizes, depending on the regulations. They can be normally stranded or split in the gussets of the main conductors or designed as concentric conductors. (All information without guarantee)

NF

Normes Francaises. France (All information without guarantee)

NFPA

Abbreviation for National Fire Protection Association. Publisher of NFPA standards and NEC. USA. (All data without guarantee)

Nominal voltage

Nominal voltage is the voltage to which the structure and the tests of the wires with regard to the electrical properties are related. The rated voltage is expressed in V by specifying two alternating voltages Uo/0: Uo = effective value between an outer conductor and "earth" (non-insulating environment). U = effective value between two outer conductors of a multi-core cable or a system of single-core wires. (All data without guarantee)