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2.2.1 Wiring Detail – Auxiliary Cabinets
1820 Telephone Intercom System
Wiring Detail - Auxiliary Cabinets
3
16 Volt, 50 VA UL Listed Transformer.
1
From Preceding Line Interface Boards
2
To additional Line Interface Boards
3
Power Supply Board can power up to 21 additional Line Interface Boards. The power supply board is
4
only need if over 21 Line Interface Boards are used, or if they are located over 200 feet from the main
control babinet.
Page 22
4
2
16 VAC
PWR
INPUT
1
DOORKING, INC., INGLEWOOD, CA 90301
Title:
1820 Telephone Intercom System
Wiring Detail Auxiliary Cabinets
Date:
4/05
Dwg. No.
A
M1820-065-7
Rev.
1820-065-B-2-06
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