>Sorry Rich, you are not correct. The voltage is irrelevant. Neutral
>carries current, ground never carries current unless there is a fault. The
>diagram of the SB220/221 plug that I have clearly shows the green wire to
>ground in the plug for both 120V and 240V setups.
Bill --
** What I am telling you is that green is not a sacred color to this
radio operator. I Have a 3-wire 240v outlet in the radio-room. The
Neutral wire on this outlet connects back to the 240v neutral (the C.T.)
terminal in the breaker box.- which is also the ground terminal in the
breaker box. If I had not connected the green wire in the SB220's
3-wire cord to 240v neutral, I would not have a ground return on the
SB-220's chassis. - - How would you have wired the 240V 3-wire plug?
>
>Bill N2BC
>
>
>----- Original Message -----
>From: "R. Measures" <r@somis.org>
>To: "Bill Coleman" <n2bc@stny.rr.com>; <Ku4uk@aol.com>; "AMPS"
><amps@contesting.com>
>Sent: Saturday, December 06, 2003 5:01 PM
>Subject: Re: [Amps] RE 220 V
>
>
>>
>>
>> >NOT TRUE.
>>
>> ** It's true on my SB-220. When wired for 240V, the third wire (green)
>> goes to the neutral on the 240v 3-conductor plug and the other end of
>> this wire goes to chassis. On a 3-conductor 240v circuit, the ground is
>> the neutral. 0v = 0v.
>> >
>> >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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