Here we go again,
Subject matter: Power wiring to power amplifiers AKA how to connect a plug
to your amplifier.
The INFAMOUS NEUTRAL / GROUND comment resurfaces.
There is no situation where a Neutral and a Ground are the same thing. They
may get bolted together under certain conditions, but are not the same
thing. This is why a ground is a green wire and a neutral is a white wire.
In a two wire (ground not counted) 220/221 circuit (whatever it takes) the
ground should never conduct current unless there is a system fault. If you
require 120V along with your 220/221V you pull a neutral. In a three wire
220/221 circuit where a Neutral is added, the Neutral is wired to a terminal
strip inside the amplifier NOT THE CHASSIS.
Why would you need a neutral? If your equipment ran on 220/221 plus also
required one or two circuits of 110-120V also. This installation would
require a 4 conductor plug and a 4 conductor line cord to meet CODE.
How does most manufacturers get away with using 120V inside and box and
still only have a three wire (2 hots and a ground) cord? They use a 220/221
to 120V step down transformer)
Yes I have been silly referring to 220/240 circuits as 220/221 whatever it
takes...
Neutral never equals Ground.
BOB DD
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