TOA Electronics EX-16 Manuel d'utilisateur télécharger pdf (Page 16)

3.5 Piping

* Where wiring is to be passed through a wall or the like, it should be

protected by a hard PVC or metal tube.

* If the number of connecting wires between an indoor terminal board

and a station is small and the station's site is fixed so that it will not be

moved frequently, install a box at that site and pull wiring through a

metal or hard PVC tube as required by job or ordinance.

* Use a floor duct if the number of connecting wires is large and the

stations are likely to be moved frequently.

* Station wiring which must be laid across open areas of floor should be

protected by plastic or metal shields. (See drawing below.)

EXAMPLE:

Wire protector

Floor duct

Floor

Metal or Hard PVC tube

Wall

Plastic or

Aluminum

Desk

Station wiring

Floor

Fig. 10

Wire protector

4-Pin Jack

& Plug

Box

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TOA Electronics EX-16 Manuel d'utilisateur Page 16