[Amps] Fw: Power cord to use when converting AL-80B to 240 volts?

[Bill Coleman N2BC]

----- Original Message ----- 
From: "Bill Coleman N2BC" <n2bc at stny.rr.com>
To: <craxd1 at verizon.net>
Sent: Sunday, October 02, 2005 4:53 PM
Subject: Re: [Amps] Power cord to use when converting AL-80B to 240 volts?


It is quite OK to use the white on one of the phases in a 240V hookup.  It
is never OK  to use green to anything other than ground.

 Most modern amps have no need for neutral when wired for 240V.  If neutral
is indeed needed for something inside that is 120V only then the only way is
 to use a 4-wire cord.

Bill  N2BC
> ----- Original Message ----- 
> From: "Will Matney" <craxd1 at verizon.net>
> To: <amps at contesting.com>
> Sent: Sunday, October 02, 2005 3:58 PM
> Subject: Re: [Amps] Power cord to use when converting AL-80B to 240 volts?
>
>
>> Colin,
>>
>> That's true as long as the cable is rated for 220 Vac, and you don't want 
>> to add a ground with the neutral. To do it right, I'd want a three wire 
>> with ground cord. Most 120 Vac cords only have three wires. To use a 120 
>> Vac cord on 220, you'd have to use the ground wire for the neutral which 
>> most of the time is a green wire. That is if you intend on using anything 
>> on the 120 Vac line. Plus your using a white wire as a hot. The correct 
>> way is have a black and red wire as hot, white as the neutral, and green 
>> to ground.
>>
>> Best,
>>
>> Will
>>
>> *********** REPLY SEPARATOR  ***********
>>
>> On 10/2/05 at 12:47 PM k7fm wrote:
>>
>>>If the mains cable for the amp is designed for 120 volts, it will handle
>>>240
>>>volts.  The current is 1/2 at 240 volts, so you could actually make the
>>>cable smaller.
>>>
>>>Regarding voltage rating, each wire is 120 volts to ground, so the
>>>insulation need be no higher than for 120 volts (insulation between wires
>>>is
>>>doubled because both wires are insulated.
>>>
>>>Colin  K7FM
>>>
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>>
>>
>>
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>