Lencore n.Form: Installation and Operations Manual - Manual (Page 22)

section 3
3.5 | wiring the speakers and emerald ops
First, run power cables to the IN/OUT connections of each Emerald OP,
taking care to be consistent with positive and negative screw terminals.
Do NOT cross positive and negative connections while wiring power- irreversible
damage will occur.
Run the power cables (NOT LIVE) from the power supply unit in the electrical/
IT closet to the power +/- screw terminal connections of the first Emerald OP.
Complete all other wiring (audio and data) and perform wiring checklist
(see page 28) BEFORE powering up the system.
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WARNING
NOTE: Make sure that grounds are connected to grounds and positives
to positives, and that wires are not crossed anywhere in the entire system.
Double check the wiring at each power supply.
Follow all labeling for power.
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