Connecting to the power supply – see 'Connecting MP-11x to Power' on page 32
5.1 Power Surge Protection and Grounding
Lightning is the transient passage of electrical current between a cloud and the surface of
the earth. Part of the lightning current can be carried inside a building from electrical lines
and analog telephone lines located outside. This direct injection of lightning current inside a
building can cause significant damage to electronic circuits and equipment.
To protect MP-11x from these power surges, it must be connected to an external lightning
protector. You must use a lightning protector of the type CIRCA 4B3S-75 manufactured by
CircaTelecom (http://www.circatelecom.com
). The connection must be made using the
terminal fixture of the type CIRCA 2625QC/QC or 26100QC/QC.
This fixture must be connected alongside or within the Main Distribution Frame (MDF). You
must connect the grounding connection of this electrical cabinet to the grounding bus of the
electrical circuit board, using AWG wires of at least 10mm
2
and maximum length of 3
meters. MP-11x must be connected to the power surge protector using minimum 26-AWG
wire thickness.
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