[Elecraft] Question about 120 volts vs. 240 volts house supply to KPA 500

[Rick Bates, nk7i]

I would check on the code about the unganged breakers for a 240V 
circuit.  It may not meet the code.  (ALL of my 240 circuits have ganged 
breakers; as a reference.)

Even if it does meet code, if one 'popped' and the other did not, one 
side of that circuit would still be hot, therefore unsafe if worked on 
or problem causing to whatever is connected.  A ganged breaker would 
mean that if one 'popped' it would shut the other breaker off, removing 
ALL power to that circuit.

Part of my former career was to do business inspections; this I would 
refer to a qualified electrician, a world I attempt to avoid as much as 
possible.  I know enough about electricity, to leave it alone hi hi.

73,
Rick nk7i


On 9/20/2024 10:48 AM, Jim Brown wrote:
> Excellent design and execution, Bob. Everything about your logic is 
> 100% correct.
>
> 73, Jim K9YC
>
> On 9/20/2024 9:09 AM, Bob McGraw wrote:
>> I elected to install a 240 volt 20 amp service to my operating 
>> position.  I used some 75 ft of #10-3 w/ground (4 wires) running from 
>> the breaker panel to the operation position.  I split off a 120 volt 
>> service from L1, and a second 120 volt service from L2. Thus there is 
>> also a 240 volt service, L1 + L2,  for the amp or any amp, past and 
>> present. Thus everything in the station shares a common Neutral and 
>> common Ground.  Many issues are resolved using this approach. 
>> Besides, our house was wired with those stab on outlets, of which I 
>> have had to replace many due to poor connections.
>>
>> Yes I know that #10 is rated for a 30 amp service. Due to the length 
>> of the run from the breaker panel to the desk, I choose a larger 
>> gauge of wire to assure less voltage drop.  Besides, crawling through 
>> the attic pulling a #10-3 is the same effort as pulling a #12-3.  At 
>> the breaker panel, the service is protected by 2 individual 20 amp 
>> breakers.  I did not use a ganged 2 pole breaker.
>>
>> No ground issues, no hum issues, no buzz issues and no RFI issues.
>
>
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