[Boatanchors] Storm Damage to Electronics

[Sheldon Daitch]

Bob,

Outside the US, three phase in residential structures is
far more common.

In Morocco and in Kuwait, both places we lived in
had three phase 240/416.

In our Morocco residences, it seems the three phase
was simply the common wiring convention, but in
Kuwait, the air conditioners for the house are large
enough that they have three phase compressors.

The GE flat top stove we have is a standard stateside
stove, and in the US, operating the stove off the standard
240VAC with center tapped neutral, there was always a
120VAC line to neutral.  When GE ships these as an
export model for the 240V phase to neutral world, they
have to add a transformer to get the 120VAC for the
electronics board in the unit.

73
Sheldon

On 11/5/2011 8:41 PM, rbethman wrote:
>
> NOTE: The neutrals WERE ALWAYS CONNECTED!
>
> Distribution lines in residential areas are *ALMOST* always WYE
> systems.  This is done for economy.  in lieu of 4160/2400, they have
> gone to 12470/7200.
>
> The cost of single phase transformers with a primary of 12470 is
> SIGNIFICANTLY higher than those of 7200.
>
> Delta distributions are *ALMOST* exclusively done for commercial areas.
> This is because they DO use three phase power.  Then you have 120/208
> and 240 416 *IF* WYE connection is used on the secondary.
>
> Residential is entirely different.  The neutral carries current all the
> time.
>
> Bob - N0DGN
> On 11/5/2011 1:07 PM, J. Forster wrote:
>    
>