Cable configuration
Single supply cables
Parallel supply cables
(1): Power distribution panel
(2): Compressor starter panel
Fuse calculations for IEC are done according to IEC 60364–4–43 (Low voltage electrical
installations — Part 4–43: protection against overcurrent).
Fuse calculations for cUL, CSA and UL: The indicated fuse size is the maximum fuse size in
order to protect the motor.
Cable sizing according IEC
The tables below indicate the current carrying capacities of cables for commonly used installation
methods, calculated according to standard IEC 60364-5-52 (Electrical installations of buildings
part 5 - selection and erection equipment and section 52 - current carrying capacities in wiring
systems).
The allowed currents are valid for XLPE (Cross-linked polyethylene) insulated cables with three
loaded copper conductors and for maximum conductor temperature 90 °C, reference temperature
30 °C.
Instruction book
9829 3178 63 65
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