5-34 SPECIAL INSTRUCTIONS FOR ELECTRONIC SUBSYSTEMS E UROCARGO Euro 4/5 5.8.6 Additional circuits They must be separate and protected with a special fuse from the vehicle’s main circuit. The added electric cables must be con- nected to the original electric system with watertight junctions equivalent to the original ones. The added cables must be protected in special sheaths (not PVC) or corrugated pipes appropriately fixed with brackets, protected from bumps and sources of heat. The cables must have a minimum distance of: - 150 mm from sources of high heat (turbine, engine, exhaust manifold,...) - 50 mm from containers of chemical agents (batteries, etc...) - 20 mm from moving parts.
Take the utmost care to avoid any rubbing of the cables with other components and particularly with any sharp edges of the body- work. The route of the cables must be defined as much as possible with dedicated brackets and clamps and moved closer (around 350 mm), to avoid hanging parts and provide the possibility (and obligation) to rebuild the same installation in the case of repairs or outfits. The passage of cables in holes and on edges of various panels must be protected by cable glands (besides the covering of the corruga- tion). It is forbidden to perforate the chassis frame for the passage of the cables.
The corrugated pipe must protect the whole cable completely and must be joined (with heat shrink sections or taping) to the rubber caps on the terminals. In addition the corrugated pipe clamps (cut longitudinally) must not deform it, to avoid the cables being able to come out or anyhow be in contact with the sharp edge of the pipe. All the terminals (+) for connecting the aforesaid cables and their lugs must be protected by rubber caps, (airtight for zones exposed to the weather or with any stagnation of water).
The fastening of the lugs on the terminals (also negative) must be assured to avoid loosening, applying a tightening torque where possible and fanning out the lugs in the case of multiple connections (preferably to avoid). It is wise where possible, to make provision for a different route for the cables passing between interfering high-intensity signals (e.g. electric motors, solenoid valves) and susceptible low-intensity signals (e.g. sensors) anyhow keeping for both a position as close as possible to the metal structure of the vehicle.
In the case of chassis frame-tipping cab connection, the position of the set of wiring must be checked with the cab in its seat and tipped, to trace any interference and the tensioning to be corrected. Depending on the drawn current, use fuses and cables of suitable cross-section, as shown in the table. The fuse must be connected as near as possible to the point of drawing off the current. ! Electrical system: modifications and drawing-off power Base - January 2008 Print 603.93.431