Drawing reference Description
(1) Larger than maximum allowed installation length.
(2) Less than or equal to maximum allowed installation length
(3) Minimum 1 mm of free space
Do NOT:
• Paint the rubber bellows of the expansion joint since:
• Solvents can damage the rubber cover.
• The colored coating avoids decent visual inspection of the rubber condition.
• Weld, cut or grind without protecting the rubber bellows
• Expose the compensator to permanent radiation heat above 90 °C (194 °F)
7.5 Electric cable size, fuses and cable length
General
Local regulations remain applicable if they are stricter than the values proposed below.
The voltage drop must not exceed 10 % of the nominal voltage. It may be necessary to
use cables with a larger size than those stated to comply with this requirement.
IEC compressors
• Cables calculated according to IEC 60364-5-52
• Mounting type: E (Multicore cables in free air)
• Multiple circuit arrangement:
• 4 (Single layer on a perforated horizontal or vertical tray system)
• Use 90 °C (194 °F) cables (Type H07V2-K)
• Cables have to be recalculated if the fuses that are used are bigger than the fuses that are proposed.
CSA/UL compressors
• Cables calculated according to CEC C22.1/NFPA 70
• Multicore cables on perforated tray or ladder system.
• Use 90 °C (194 °F) cables (Type R90, RW90, T90)
• 2 sets of fuses to be placed in series in order to meet the SCCR rating of 65kA (before model year
2014)
• Cables have to be recalculated if the fuses that are used are bigger than the fuses that are proposed.
Abbreviation Description
FLA Full Load Ampacity
MCA Minimum Circuit Ampacity
Icc Rated conditional short circuit current
SCCR Short Circuit Current Rating
Instruction book
2920 1815 04 213
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