Topband: Inverted L question

[k6se at juno.com]

Tony, EA5BY wrote:

"I will put up an inverted L for 160 meters.  And I will use a vacuum
variable at the base.  Seems that 250pf will do ok but, how many volts? 
I will use a 2KW amplifier."
==========
An inverted-L that is 100 feet (30.5m) vertical and 58 feet (17.7m)
horizontal needs a series capacitor of about 480 pF at the feedpoint to
tune out the inductive reactance and be 50 ohms resistive.  With 1500
watts output, there would be about 1000 volts of RF across the capacitor.

73, de Earl, K6SE