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CONCENTO PLUS - <strong>Technical</strong> <strong>Manual</strong>, 11/12 (Rev. 3.0), 00 8814 14<br />
3. Room types<br />
Frequently used room types are explained in the following pages on the basis<br />
of equipment examples.<br />
3.1 Cables legend<br />
The following letters are used for cables in the room type plans:<br />
Code Cable type Area of use<br />
a IY(ST)Y 2x2x0,8 - Secondary lines (except switches with 2 buttons,<br />
e.g. Call & cancel switch/WC)<br />
- Ward bus without speech (minimum requirement)<br />
- Group bus without speech (minimum requirement)<br />
c IY(ST)Y 4x2x0,8 - Ward bus with or without speech<br />
- Group bus with or without speech<br />
- Secondary lines to switches with 2 buttons, e.g.<br />
Call & cancel switch/WC<br />
k NYM 2x2,5 mm2 or<br />
NYM 2x1,5 mm2 or equivalent<br />
Power supply, equipotential bonding<br />
15
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