I spent a year living in Bogota Colombia.  The first few months there, I had to have auto transformers for the US appliances.  The voltage was around 150 volts phase to neutral.  I had to do some funny stuff on the dryer.  Motor stepped down to 120 and the heating element at 150.  Took a bit longer to dry.  During the time I was there they switched to 120.  All of sudden step down transformers became real cheap.  It was 60 Hz, I remember that because I had taken a 28 KSR with me.  The dryer then took another change to get the heating element to run on the 208 phase to phase and the motor on 120. 

Wondering how standardized the US supply is these days.  Over time and places I've seen 115, 117 and 120 as the stated line voltage.  I never researched it at the time, but when I moved to TX from IL, I notice my light bulbs seemed to last shorter times.  I know there was a 130 volt bulb sold as a long life bulb you could install in hard to reach places.  But I'm wondering if they ever sold 115 volt bulbs in one part of the country and 120 in other parts? 

---
----
You said "tomorrow" yesterday.

The above comments or recommendations are SWAG. Use at your own risk.
John, W9DDD
On 6/8/2022 10:07 PM, Dave Horsfall wrote:
On Thu, 9 Jun 2022, Doug Jackson wrote:

We have been 240v since the dawn of time, then the Europeans mucked 
around with a standard and now we are 230v.
Unless you were in Western Australia (pretty much a different country) 
where 250v was the norm (although still 50 Hz), until they joined the 
national grid.

In typical Oz humor, we defined the voltage standard as being 230 V as 
the nominal voltage with a +10% to –6% variation at the point of supply, 
i.e., 253 V to 216.2 V.
Yep :-)

I had a mate of mine spend too much time in Europe and it made his brain 
go funny - He almost had a meltdown when I showed him the 240V from his 
mains socket...
You should see (or, rather not), what 250v (plus spikes) will do to
Euro-defined 220v stuff...

-- Dave VK2KFU


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