Solar cable | 4mm² | black | KJ-4MM2

Solar module cable | 4 mm² | black | KJ-4MM2

KJ-4MM2 is a black 4 mm² cable intended for electrical connections between solar modules and other compatible photovoltaic equipment. The cable may be used in PV system circuits when a 4 mm² conductor cross-section has been selected according to the actual circuit current, cable route length, permissible voltage drop and installation conditions.

When selecting a cable for a solar installation, conductor cross-section alone is not sufficient. The suitability of a 4 mm² cable must be determined from electrical calculations, circuit current, cable length, voltage drop, installation method and the technical characteristics declared by the manufacturer of the specific cable.

It is a 4 mm² cable option for solar module system connections when this conductor cross-section has been confirmed by the design or electrical calculations. The black colour may be used in accordance with the wiring identification and marking system adopted for the specific installation.

The standard, rated voltage, conductor material and class, insulation construction, temperature range, UV and ozone resistance, outer diameter, minimum bending radius and current-carrying capacity of the specific supplied cable batch must be checked against the manufacturer's or supplier's technical documentation. These parameters are intentionally not stated here until they are reliably confirmed specifically for KJ-4MM2.

A 4 mm² cross-section must be evaluated together with the parameters of the complete PV circuit. During design, the following should be considered:

• maximum circuit current;
• total cable route length;
• permissible voltage drop;
• module connection configuration;
• inverter DC input parameters;
• cable installation conditions;
• ambient temperature and other operating factors according to the cable documentation.

• Intended for electrical connections of solar modules and compatible PV equipment.
• 4 mm² conductor cross-section.
• Black cable.
• May be used in PV module string cable routes if it meets the requirements of the specific project.
• Suitable for use with compatible connectors selected according to the actual cable construction and dimensions.
• Used as part of the energy transmission circuit of a PV system.

• Electrical connections of solar modules.
• PV module string cable routes.
• Connecting solar modules to other compatible system components.
• Connecting PV strings to the DC side of an inverter when the cable characteristics are suitable.
• Residential solar installations.
• Commercial and industrial PV installations.
• Installation of new systems and reconstruction of existing PV systems.

When designing a solar module string, the maximum current, cable route length and permissible voltage drop are calculated. If the calculations confirm a 4 mm² cross-section, KJ-4MM2 may be used as part of the corresponding PV cable route, provided that the technical characteristics of the actual supplied cable batch are checked for compatibility with the system DC voltage, connectors and installation environment.

4 mm² may be suitable when calculations based on circuit current, cable installation conditions and permissible voltage drop confirm this choice.

6 mm² may be selected when a lower voltage drop is required or when a larger cross-section is required by the design calculations and actual installation conditions.

• Select the cable cross-section according to maximum circuit current, cable length and permissible voltage drop.
• Before installation, check the rated voltage and other manufacturer-declared parameters of the specific cable batch.
• Do not exceed the minimum bending radius specified by the manufacturer.
• Use only connectors compatible with the cable cross-section and outer diameter.
• Crimped PV connectors must be installed only with the appropriate tool and according to the connector manufacturer's instructions.
• Mark polarity according to the project and installation documentation – cable colour alone should not be the only identification method.
• Before commissioning, check polarity, connector quality and cable route condition.
• PV system installation work should be carried out by qualified specialists.

Solar module cable | 4 mm² | black | KJ-4MM2

Black 4 mm² cable for electrical connections of solar modules and compatible PV equipment. Professional selection requires evaluation of circuit current, cable length, permissible voltage drop, DC system parameters, installation conditions and the technical characteristics declared by the manufacturer for the specific supplied cable batch.