Wiring Tips for Connections and Connectors

Cuing of cables and re-crimping connectors
Some regions have specific regulations regarding the
compatibility of connectors. To make adherence to such
legislation as easy as possible, current REC production
panels are supplied pre-installed with Multi-Contact
MC connectors as standard. REC explicitly excludes the
cuing of cables and replacement of connectors. If this
causes an issue for a particular site, contact REC (www.
recgroup.com) for further advice.
If connectors are ever replaced, it is critical that
replacements are correctly installed according to the
manufacturer’s instructions. Any failures caused by
incorrect or insufficient crimping can invalidate the
warranty and insurance policies as well as presenting a
risk for potential panel defects.
Cable bending
The cables used by REC have a minimum bend radius of
 mm. This means the diameter of the complete bend in
the cable may not be less than  mm from the inside of
the bend to the facing inside bend as shown in Fig ..
This protects the cable and insulation from undue stress.
Bending the cable compresses the insulation on the
inside and stretches the material on the outside of the
bend. Any curvature less than the minimum bend radius
can weaken the cable insulation and allow moisture to
penetrate and corrode the insulation and cable.
< 60 mm >
< 30 mm >
To connect Hosiden & MC
• Align latches of the male plug with receptacles of the
female socket
• Insert the plug into the socket until a firm click is heard
• Check the connectors have engaged correctly by
gently pulling them apart
To disconnect Hosiden & MC:
• Press the latches together either by hand (Fig. ) or
with the correct tool (i.e., Multi-Contact tool PV-MS or
the Hosiden connector tool) (Fig. )
• Pull the connectors apart
Hosiden and MC connectors can be further secured by a
specific locking system available from the manufacturer.
This prevents the connector being opened except with a
specially designed tool.
Fig. : Connection of MC type connector (Multi-Contact MC or Hosiden)
Fig. : MC type connector fully closed (Multi-Contact MC or Hosiden)
Fig. : Disconnecting an MC type connector by hand (Multi-Contact or Hosiden)
Fig. : Minimum bend radius of  mm
Fig. : Disconnecting an MC type connector with tool (Multi-Contact or Hosiden)
Fig. : Examples of incorrect and correct bend of cable on exiting junction box
Further good practice is to ensure that the cable exits
the junction box in as straight a line as possible, before a
bend (Fig. 8). Cables exiting the junction box at extreme
angles apply force to the surrounding construction; this
can create small fissures in the casing and allow the
ingress of water and dirt into the junction box material.