[GreenKeys] 2 1/2A SCREW IN FUSE

[Sheldon Daitch]

I've lived in three different houses or apartments in countries where the common household voltage was 240/415VAC, where 240VAC was phase to ground and 415VAC was phase to phase, and in all three, we had all three phases in the breaker panels.

The last house we lived in, in 240/415 land, all three central air conditioners and the water heaters were three phase.

That house also had two subpanels in the house for lighting and outlets and in each panel, there was a main breaker for the entire panel, then two sub-main breakers, each with different ground fault trip settings, the larger ground fault trip for the permanent lighting and the smaller ground fault trip breaker for all the outlets.

Three phase in US housing is probably not the norm, although I did know that one home in my small hometown in Georgia was three phase and the now silent key told me it was because of the central air conditioner unit for the home.
73SheldonWA4MZZ

     

As in VK/ZL, along with a separate earth on a 6ft copper spike.  As I gaze 
out my window, I see a pole (the pig is further down the street) with 
three wires on top carrying 11kV (yes, really!)[*] and four wires a bit 
further down carrying the 415v + neutral; the household drops take a phase 
in turn plus the neutral.

   
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