Example of mounting of an installation, thus has to be done by qualified and trained staff considering all applying safety regulations. Following procedures and step by step instructions are important to be considered:

 1. As general comments, any kind of pollution (dust, oil, humidity, etc.) during the assembly process or to the unmated connector can degrade contact and connector performance. This applies in particular to the seals and the crimping of the contacts. A clean assembly environment is therefore essential.

 2. Termination of connectors uses different crimp contacts for various wire gauges.

Cable Wires and Crimping Possible wire gauges are AWG 14, AWG 12 and AWG 10. The tools to be used are 
selected using the wire gauge.

 3. Use only appropriate wire gauges.

 Besides the standard seal/pinch ring combination further five different seals are general used.

_ 4.0 mm grommet inner diameter for insulation diameter from 3.2 to 4.3 mm

_ 5.0 mm grommet inner diameter for insulation diameter from 4.3 to 5.3 mm

_ 6.0 mm grommet inner diameter for insulation diameter from 5.3 to 6.2 mm 

_ 7.0 mm grommet inner diameter for insulation diameter from 6.2 to 7.2 mm

_ 8.0 mm grommet inner diameter for insulation diameter from 7.2 to 8.0 mm

 The grommet has to be matched with the outer diameter of the solar cable

Plug Connector to protect against shock, ensure that conductors and their associated connectors are separated from opposite polarity components.

Photovoltaic Interconnection. When assembling the connectors, the following sequence must be followed:

4.  Insert the stripped wire into the wire crimp barrel until it stops. While holding the wire in place, squeeze tool handles together until ratchet releases.

5.  Push contact with cable into the connector housing (incl. seal/pinch ring combination and back shell.  Until you hear the contact is locked into position.

6.  Tighten back shell nut generally to 1.5 Nm.

The pictures is a schematic of how we connect four panels in a string using MC4 type of connectors