ERICO ISODC Isolated Downconductor System - Manual (Page 11)

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The engineer responsible for the structure should first ensure that the mounting of the lightning protection system will not exceed the design
parameters for the structure (e.g. wind and weight loading), nor exceed aviation or similar height limitations for the site. Galvanic suitability and
mounting methods should be considered. The installation should be planned with appropriate access and safety equipment such as scaffolding,
rigging and safety barriers etc. Appropriate precautions should be taken with regard to any potentially hazardous site conditions such as over-
head or exposed power circuits or sources of electromagnetic radiation.
The Isolated Mast must be installed at a height where the angle-of-protection offered by the air terminal tip is sufficient to protect desired
equipment. Additionally the minimum requirement of 2 m clearance must be maintained between the top of the Isolated Mast and
structure/object to be protected (refer to Figure 2).
Mast height above structure Mounting requirements Mast
2 - 2.5 m 2 brackets at least 400 mm apart ISOFRP3M Isolated 3 m mast
For taller mounting requirements ISOCAP68 and ERITECH ® SYSTEM 3000 components can be used. Refer to Annex B
Table 5. Mast & mounting bracket requirements.
2-2.5 m
(Minimum 2 m)
400 mm
Figure 5. Mast height and mounting arrangement.
4. FIXING ISOLATED MAST TO THE STRUCTURE
190 mm
30 mm
ALOF1GS Offset
Mast Bracket
ISOMMB50
Attachment
ACF-2-GS
Attachment
Mounting
Arrangements