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56
MC4 Connectors
The Positive (+) and Negative (-) outputs of a solar panel are fed through a watertight junction
box. The appropriate wire length is wired to the junction box for further connections. The solar
panels supplied in each kit are provided with approximately 3 ft. each of both Positive and
Negative wires that are pre-connected to the junction box. The free ends of the wires are
terminated with a special type of mating connector also known as an MC4 Connector. These
connectors allow for ease in extending the wires for further connections.
Caution!
Please do not cut off the solar panel connectors; the warranty will be
voided.
General information about MC4 connectors
Each
RENOGY Solar Panel will have an MC4 Connector System that consists of male and female
connectors. This type of connector system is easy to install and uses a “snap-in” type of safety
locking clips to lock the two mating connectors. The “snap-in” feature avoids unintentional
disconnection. The mating contacts are sealed against the ingress of dust and water.
Specifications are as follows:
Contact diameter: 4 mm
Maximum rated current: 30A
Maximum system voltage: 1000V
Gauge size: 14, 12, 10 AWG
Degree of ingress protection when connected and properly locked: IP67
Temperature range: −40°C to +90°C
TÜV Rheinland approved
General information about MC4 Connectors
The MC4 Connectors mentioned in this manual have been designated “Male” and “Female” ends
based upon the characteristics of the mating contact inserts within the terminals. However, in the
solar industry, the “Female” MC4 Connector is used for the
positive (+) lead of a panel, and the
“Male” MC4 Connector its used for the negative (−) lead of a panel as shown in Figure 5.2.
Figure 5.1 MC4 Connectors and mating contacts
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