Wiring
Xenus XSL User Guide
60
Copley Controls Corp.
4.1: General Wiring Instructions
4.1.1: Electrical Codes and Warnings
Be sure that all wiring complies with the National Electrical Code (NEC) or its national equivalent,
and all prevailing local codes.
DANGER: Hazardous voltages.
!
DANGER
Exercise caution when installing and adjusting.
Failure to heed this warning can cause equipment damage, injury, or death.
Risk of electric shock.
!
DANGER
High-voltage circuits on J1, J2, and J3 are connected to mains power.
Failure to heed this warning can cause equipment damage, injury, or death.
Do not ground mains-connected circuits.
!
WARNING
With the exception of the ground pins on J1, J2, and J3, all of the other circuits on
these connectors are mains-connected and must never be grounded.
Failure to heed this warning can cause equipment damage.
Do not plug or unplug connectors with power applied.
!
WARNING
The connecting or disconnecting of cables while the amplifier has 24Vdc and/or
mains power applied is not recommended.
Failure to heed this warning may cause equipment damage.
4.1.2: Grounding Considerations
Primary Grounding Functions
A grounding system has three primary functions: safety, voltage-reference, and shielding.
J1-3 Primary Ground
The primary ground at J1-3 is the safety ground and is intended to carry the fault currents from the
mains in the case of an internal failure or short-circuit of electronic components. This ground is
connected to the amplifier chassis. Wiring to this ground should be done using a conductor of the
same gauge wire as that used for the mains. This wire is a “bonding”’ conductor that should be
connected to an earthed ground point and must not pass through any circuit interrupting devices.
The pin on the amplifier at J1-3 is longer than the other pins on J1, giving it a first-make, last-
break action so that the amplifier chassis is never ungrounded when the mains power is
connected.
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