[Elecraft] 240V Line

[Alan]

Electric ranges used to have a 110 VAC outlet in which the ground and 
neutral were wired together.  (The 220V plug had only three prongs.)  I 
always wondered how they got away with that.

Alan N1AL


On 12/24/2014 01:50 PM, Jim Brown wrote:
> On Wed,12/24/2014 11:41 AM, Charlie T, K3ICH wrote:
>> A lot of the older amps (Thunderbolt for example) had 120 V fans 
>> wired from one hot to ground. I always wondered about that. 
>
> I think that used to be legal, but it is no longer, and it's very bad 
> practice.
>
> The better ones (Ten Tec Titan, for example) run a 120V fan between 
> one side of the power transfomer primary and the center tap. It is now 
> illegal for the Green wire to carry load current.
>
> On Wed,12/24/2014 11:13 AM, Phil Kane wrote:
>> IIRC the latest code update now requires the separate neutral ("white
>> wire") to be run in all 240V circuits.  I did that in a 1969 when I
>> finished the basement in a year-old home!
>
> You may be confusing a 120/240 outlet that has a four circuit plug 
> (phase, phase, neutral, and Green) and can serve both 120V and 240V 
> loads, with a 240V outlet that has a three circuit plug and serves 
> only 240V loads. There is no neutral in a 240V outlet, and as noted 
> above, it is illegal to connect a 120V load between one phase and the 
> Green wire (Equipment Ground).  That 120/240 circuit can feed both 
> 120V and 240V outlets. A neutral IS required to feed those 120V outlets.
>
> 73, Jim K9YC
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to n1al at sonic.net
>
>