[Amps] What to do about 'Neutral' in HB amp?

Jim jimw7ry at gmail.com
Wed Dec 28 19:26:20 EST 2022


Thanks, 73, Jim W7RY

On 12/28/2022 5:29 PM, n4is at comcast.net wrote:
>
> Whats a catch 22?
>
> You need to connect the Amp chassis to the AC neutral (wire connected to the
> ground at the AC entrance), and you need to connect the Amp chassis to the
> ground of the station, at same time, the  ground of the station need to be
> connected to the AC ground at the entrance. All neutral wires must be
> connected to only one point!
>
> You cannot do both at the same time.
>
> If you don't isolate the AC house ground from the station ground, also
> neutral, because it is also connected at the AC entrance, you end up with a
> UNSAFE ground. RF can flow to the house, EMF generate currents on both wires
> and you want the current to the ground, not to your house. It is a mess.

> Neutral or ground are two names for the same thing,


Wrong. They are separate conductors, only being common at the primary 
service disconnect.

I'm out...

Jim W7RY


>   a wire from the chassis
> to a bar on the ground. But!  The functionality is different, neutral is for
> human safety, ground wire is low impedance path to the actual ground. A long
> ground wire for the station is a problem, 10 ft long can became an antenna
> for 28 MHz, a long neutral wire is not a problems, it  works for safety, if
> no current flow on it, no load.
>
> 73's
> JC
> N4IS
>


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