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Currents and fuses
IEC and UL/cUL approval
Motor voltage
supply range (V)
Max. fuse pack
IEC class gL/gC
Max. fuse pack
UL class K5
CSA HRC from
ii
Recommended
cable size mm²
(P/FF)
Fuse calculations for IEC: are done according to 60364-4-43 electrical installations of buildings, part 4: protection
for safety- section 43: protection against overcurrent. Fuse sizes are calculated in order to protect the cable against
short circuit.
Fuse calculations for cUL and UL: The indicated fuse size is the maximum fuse size in order to protect the motor
against short circuit. For cUL fuse HRC form II, for UL fuse class K5.
Earthing
The earthing cable connected to the pump (PE) should be minimum 10 mm
2
(according to EN 60204-1 section 828).
Cable sizing according IEC
The tables below indicate the current carrying capacities of cables for 3 commonly used installation methods,
calculated according to standard 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 PVC insulated cables with three loaded copper conductors (maximum conductor
temperature 70 °C).