Article 352. Mounting lights
As stipulated in Technical Regulation.
Article 353. Intersecting with elastic gaps
As stipulated in Technical Regulation.
Section 8 OPEN AND UNDERGROUND LAYOUT OF CONDUCTOR IN STEEL PIPES WITH THIN WALL
Article 354. General
As stipulated in Technical Regulation.
Article 355. Bending radius
As stipulated in Technical Regulation.
Article 356. Fixed distances of pipes
Cables should be protected by a pipe for 2.5m from the ground and 0.2m underground, and the pipe should be earthed properly.
The edge of a pipe should be covered to avoid the rain water.
Article 357. Fixing exposed steel pipes
As stipulated in Technical Regulation.
Article 358. Distances between tightening boxes
As stipulated in Technical Regulation.
Article 359. Pipes laid on base of technological equipment
Regarding pipe works, fine sand is used for 20cm above the pipe to prevent damage to the pile. The pipes should be protected at the location which is subject to get shock such as the pipe terminal in a manhole or under soft ground.
Article 360. Pipes intersecting with elastic gaps
As stipulated in Technical Regulation.
Article 361. Jointing pipes in dry rooms
In a case of metal pipe wiring
a. Wear, decaying, and other damages |
can be created easily at box, pull box, and other |
accessories, and in order to preventing dust from entering the inside, gaskets are installed. |
|
b. The connections between pipes, pipe |
with boxes or other accessories or pull boxes or |
equipment or electric tools using liquefied gaskets or parallel screw using for pipe line, etc. are used for the screw with the parallel pipe thread, after connecting the screw of 5 mountains or
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more the method of connecting together or with the method of having the effect above equality to this in the significant part of the screw, doing, the dust that tries does not invade the electric wire inside of pipe section e.g., the paint or the black stickiness polyethyleneinsulating tape etc whose durability and adhesiveness are satisfactory are administered.
c.The wiring of the part which needs flexibility in the small and short part linked to electric motor shall use flexible switch and dust-proof structure.
Article 362. The requirements of Couplings
As stipulated in Technical Regulation.
Article 363. Jointing underground pipes
Regarding the connection of underground pipes, the countermeasures for avoiding inflowing concrete, sand and water to the pipe should be taken, and make sure not to damage the pipes and clean them when they are connected each other.
Article 364. Sleeves of steel pipe
As stipulated in Technical Regulation.
Article 365. Working for terminal pipes
As stipulated in Technical Regulation.
Article 366. Installation of Stuffing pipes
As stipulated in Technical Regulation.
Article 367. Proper installation
The appropriate size of a manhole should be decided by considering the cable maintenance such as installation, removing and connection.
Refer to article 326.
Article 368. In wet places
Refer to Article 361
Article 369. Fixing steel pipes
Refer to article 356.
Article 370. Wires in steel pipes
As stipulated in Technical Regulation.
Article 371. Use of steel pipes
As stipulated in Technical Regulation.
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Article 372. Thin steel pipes
As stipulated in Technical Regulation.
Article 373. Joints
As stipulated in Technical Regulation.
Article 374. Earthing steel pipes
Refer to Article 293
Section 9 WIRES BARE AND COVERED WITH THEVOLTAGE LESS THAN 1kV Article 375. Permanent joints of wires
The connection between the aluminum and the copper conductor should be considered the electrolytic corrosion point.
One of the measures is to apply galvanic proof compound and sleeve.
Article 376. Requirements of Gap between bare conductors and pipes
As stipulated in Technical Regulation.
Article 377. Conductors placed in the factories
Wires should be installed in the way which does not damage the wire depending on the site situation.
1.Install wires away from the doorway
2.Cover wires with waterproof and anti-moisture materials if necessary
3.Make sure not to damage wires by screws in the connection box
4.Install an insulation wire on a pad to prevent the damage
Article 378. Arrangement of Instruments
Regarding switch gears of low voltage equipment, a switch such as magnetic switch or knife switch with a cover should be installed at easily reachable place for operators.
The switch should be operated by handle, knob or button which can be manipulated from theoutside, and it needs to have the enough capacity to satisfy the maximum load current.
Article 379. Covered conductors
As stipulated in Technical Regulation.
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Section 10 TERMINALS MARKING AND JOINTING WITH INSULATORS AND
CABLES
Article 380. General
1.Indoor joint box
It is used for cable/wire connections and branch. The purpose of installing this is to protect connectors such as pressure sleeves.
2.Solderless pressed terminal, pressed sleeve, and terminal connector
It is connected by changing its shape being pressured by a connector tool without soldering.
3.Screw connector
The wire connector which has a screw inside the cap, and it is connected by screwing the terminal of a conductor.
4.Bolt connector
Mainly used outside, and consists of a U shape body and nuts.
Article 381. Joints and taps
As stipulated in Technical Regulation.
Article 382. Terminals and sleeves
Refer to article 380
Article 383. Terminal wing holes
As stipulated in Technical Regulation.
Article 384. Pressing terminals in the wet environment
As stipulated in Technical Regulation.
Article 385. Terminals
As stipulated in Technical Regulation.
Article 386. Pressing terminal of cable
As stipulated in Technical Regulation.
Article 387. Coupling aluminum wires of steel core
Regarding wire connection by pressing, it should be conducted as follows,
1)The tension strength of the wire should not be weakening more than 20% and electric resistance should not be increased after the connection.
2)Tape insulation vinyl or sleeve cover should not be exposed to the bare part of a conductor.
3)The terminal part should be filed off to adjust the extra parts. If the terminal of a strand wire was loosened, the part should be cut off.
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4)Polish conductors with a brush completely before connection. Separate the brushes for aluminum and that for cupper.
5)Compressor tools should be tested periodically, and the one which can keep the proper pressure should be used.
6)Dies of the compressor should be checked periodically, and the one shaved by friction should be replaced.
Article 388. Welding of aluminum wires of steel cores
As stipulated in Technical Regulation.
Article 389. Contacts to instruments
As stipulated in Technical Regulation.
Article 390. Making terminals in explosive rooms
Electric power facilities should not be installed in a powder magazine unless there are measures against ignition
Article 391. Restriction for Laying of line
As stipulated in Technical Regulation.
Article 392. Coupling copper wires
As stipulated in Technical Regulation.
Article 393. Coupling multi-unit copper wires
As stipulated in Technical Regulation.
Article 394. Making the terminal with multi-unit copper wires
Refer to article 387
Section 11 LAYING WIRES IN INFLAMMABLE AND EXPLOSIVE ROOMS Article 395. General
As stipulated in Technical Regulation.
Article 396. Conductors in explosive rooms
Refer to article 361
Article 397. Coupling and tap boxes in inflammable house
Refer to article 361
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