
Menvier Security
Kenn Road Clevedon Avon BS21 6LH
Tel 01275 870078 Fax 01275 343453
E.Mail http//:www.menviersecurity.co.uk
TECHNICAL BULLETIN
No. 002/1/96
DC54 AND DC58 DIGITAL COMMUNICATORS
Earthing Requirements
There has been several comments from intruder alarm companies that they have been docked
points on a NACOSS inspection for not having the digital communicator connected to earth.
The British Standards state that the digital communicator must be connected in accordance
with the manufacturers instructions. Both the DC54 and DC58 do NOT require an earth
connection. The protection is provided from the BT master socket in accordance with BABT.
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