18
Grounding
The ac supply source for the amplifier is supposed to be bonded to earth ground.
Typical WYE Secondary
L1 (HOT)
L2 (HOT)
L3 (HOT)
GND
EARTH
GROUND
Typical Delta Secondary
EARTH
GROUND
L2 (HOT)
GND
L1 (HOT)
L3 (HOT)
These are the two most typical transformer configurations and failure to ground these properly
could void warranty. These are 230 Vac.