[Boatanchors] Storm Damage to Electronics

[J. Forster]

> That is ONLY if looked at for 120VAC, which STILL is a false view.  A
> single phase that has its center disconnected is NOT a "flat two phase".

A person without a brain is not a person either.

> This is saying the center tap of the secondary of say a BC-610's plate
> transfer is "essentially" a "flat two phase".

It is.

> Think again "carefully"!  That 240 is NOT, when center tapped, 180 out
> of phase with the other side!

There is a didderence between a 240 and a `120-0-120: The latter is a flat
two-phase, the former is a floating single phase.

> What does that make your dryer look like?

A floating single phase load with a protective ground.

> This argument would infer that 240 or what is essentially 250, is two
> phase.
>
> It certainly is NOT.

It depends on whether there is a neutral or not.

A typical US house is a flat two-phase. Some loads, like dryers and hot
water heaters, are single phase 240 VAC loads with a protective ground,
but no neutral.

It's entirely the same as whether the load is line-to-line (Delta) or
line-to-neutral (Wye) in a 3 phase system. A 3-phase Delta needs no
neutral.

-John

==================
>
>
>
> On 11/5/2011 11:18 AM, WA5CAB at cs.com wrote:
>> Well, technically, it is.  Looked at from the perspective of the 120
>> volt loads, the phase angle is 180 degrees.  However, it is a trivial
>> case.
>>
>> In a message dated 11/05/2011 10:13:54 AM Central Daylight Time,
>> rbethman at comcast.net writes:
>>> The 240V is NOT a two phase!
>>>
>>> The rest of your comment is correct.
>>
>>
>> Robert Downs - Houston
>> wa5cab dot com (Web Store)
>> MVPA 9480
>
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