[Elecraft] Subject: 240V Line

Jim Brown jim at audiosystemsgroup.com
Thu Dec 25 11:49:42 EST 2014


On Thu,12/25/2014 8:34 AM, Edward R Cole wrote:
> Having the 240v 20A breaker in the room is handy if the PS trips it off.

Something would have to break to trip a 20A breaker in a legal, 
single-operator ham station. I'm set up for SO2R with a pair of legal 
limit Ten Tec Titan amps running on the same circuit. In SO2R, only one 
transmits at a time. But on occasion, I've hit a string of dits to tune 
one amp while the other is transmitting. I've never tripped a breaker. I 
have occasionally blown fuses on the amps.

Remember that most breakers are designed to not trip until current has 
exceeded their limit by some percentage, and for some time. A big 
over-current (like 35A) will trip a 20A breaker very quickly, but 25A 
will take a while longer.

73, Jim K9YC


More information about the Elecraft mailing list