[BC] Tower Location Change For WLAN 1390

[PeterH]

On Apr 16, 2010, at 10:01 AM, RichardBJohnson at comcast.net wrote:

> If the FCC would enforce Part 15 regulations, local power  
> distribution would have used about 5 kV, no more, unless all the  
> equipment and methods were changed.

Perhaps why LADWP elected to use 4,800 volts for all its electric  
distribution.

Now, electric transmission is a completely different matter, and  
LADWP's sub-transmission system is 34,500 volts (whereas SCE's sub- 
transmission system is 66,000 volts), and LADWP's sub-transmission  
systems to the so-called "independent City utilities" (the Cities of  
Burbank, Glendale and Pasadena) are 69,000 volts (2 * 34,500 volts),  
and LADWP's intra-city transmission system is, variously, 138,000 or  
230,000 volts (most is 230,000 volts), while LADWP's inter-city  
transmission system is, variously, 287,500 or 500,000 volts ac, or  
1,000,000 volts dc.

5,000 volts doesn't go very far when you have a power density as LA  
does, which is why the LADWP system has more than 125 local  
distribution stations, and numerous industrial distribution stations.

But, no such distribution station is on LADWP's transmission system.  
Rather, these stations are on LADWP's sub-transmission system.