[TZ] Curious about 3 phase power

[Alan Alsobrook]

Most likely a hotel is 3 phase power, most likely a Y type feed.   This 
gives you 3 different 120V feeds, to ground and 208V between any 2 phases.
Yes if you loose 1 phase the other 2 will still be there.

1 phase down, you will experience the following:
A: all 120V connected to the missing phase will be out of power.
B: all 208V devices connected to the missing phase will be down.
C: all 3 phase equipment will be down or "not working right" (for 3 
phase motors this includes serious overheating)
D: 120V connected to either of the 2 remaining phases should function 
normally.
E: 208 equipment connected to the 2 remaining phases should function 
normally.

On 6/6/2011 11:39 PM, Steve Lewis wrote:
> No, this isn't inspired by anything stronger than Pepsi J
>
> I've been living out of town in a motel for a few weeks, and last week a
> horrific thunderstorm passed right over the top of the establishment just
> about dusk.  I stood in the doorway enjoying the show, and several times the
> lights flickered.  I happened to notice that half the exterior lights on the
> building facing me didn't come back on while my room lights came back on
> just fine.
>