Article 394 Concealed Knob-and-Tube Wiring

I. General

394.1

Scope

394.2

Definition

This type of wiring is a single insulated conductor using knobs, tubes, and flexible nonmetallic tubing for support and protection.

II. Installation

394.10

Uses Permitted

It can be used only to extend an existing installation or elsewhere with special permission from the authorities having jurisdiction and in hollow spaces of walls and ceilings and unfinished attic and roof spaces (refer to Section 394.23 in the NEC®).

394.12

Uses Not Permitted

It is not allowed in commercial garages, motion picture studios, classified hazardous locations, theaters and similar locations, or in hollow spaces of walls, ceilings, and attics under certain conditions.

394.17

Through or Parallel to Framing Members

394.19

Clearances

394.23

In Accessible Attics

394.30

Securing and Supporting

394.42

Devices

394.56

Splices and Taps

 

III. Construction Specifications

394.104

Conductors






Pocket Guide to the National Electrical Code 2005
Pocket Guide to the National Electrical Code(R), 2005 Edition (8th Edition)
ISBN: 0131480014
EAN: 2147483647
Year: 2004
Pages: 120
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