NOT TRUE.
There may be older vintages of the SB-220. But I looked at an undated
SB-220 schematic and an SB-221 schematic dated 1976. Both of these clearly
show GROUND to the chassis - the wire is labelled GREEN and the picto-gram
of the plug clearly shows it connected to the ground lug. When wired for
240V, there is no need for a neutral on an SB-220/221.
If in fact early SB-220s wired neutral to the chassis, they should be
changed. Just because they did it at one time doesn't make it correct
today. The Collins KWS-1 shipped with neutral to the chassis and they
should all be changed. Lots of Johnson and Heath gear shipped with those
deadly fuse plugs - they should be changed!
We need to move on.
----- Original Message -----
From: "R.Measures" <r@somis.org>
To: <Ku4uk@aol.com>; "AMPS" <amps@contesting.com>
Sent: Friday, December 05, 2003 9:25 PM
Subject: Re: [Amps] RE 220 V
>
>
> >No one has said anything about the heathkit SB 22O wiring. It has two hot
> >wires to transformer and neutral to chassis
>
> Neutral does not go to the chassis when a 220 is wired for 120V, but
> wired for 240v it does
>
> >....
> _______________________________________________
> Amps mailing list
> Amps@contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
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