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In Reply to: RE: What use of 20A breaker in my amp? posted by audio.bond@gmail.com on December 15, 2008 at 13:10:58
The house panel 16A will pop before your 20A braker on your amp will. Did your power amp have NEMA5-20P on it (120V 20A plug). The amp maker put in a breaker to protect itself if it plug in to panel without breaker installed, it has to do with safety issue.
Follow Ups:
Sorry, you ment the cable. It is a generic 600V rated 13AWG cable with a Schuko plug. (I'm in Europe.)
Thanks for the reply.
It is a CLB Series 20A breaker - see link
That is a cheap themal breaker, you should replace with Magnetic breaker instead, it has lower inline resistance ( in thermal breaker, there is bi-metalic metal for actuating the breaker off by heat when more current flowing through the breaker)than the Thermal type, the current trip point will be lower as the temperature goes up as shown in the spec sheet. I beleive you can replace it with AIRPAX SNAPAK, magnetic mag has tripping coil inside.
Thanks, I'll look into the AIRPAX SNAPAK option.
At the same time you already answered my primary question in your previous post, that is as long as I use the amp in an environment where the house panel has a 16A breaker, the 20A breaker in the amp will never play a role.
Bond
The thermal breaker has slower reaction time than the mag breaker as you can see by the chart and it also depend on the temperature. The amp maker may have used thermal breaker because of the high in-rush current when the amp is turn on so you will not get fault tripping of the breaker, if you use the mag breaker, you should select the AIRPAX high inrush version with trip curve 61F or 62F. You can learn more if you read more info on AIRPAX web site. All breaker will have delay trip since it is electrical-mechanical device. The chart will show you how fast it will react to over current.
> > At the same time you already answered my primary question in your previous post, that is as long as I use the amp in an environment where the house panel has a 16A breaker, the 20A breaker in the amp will never play a role. < <
> > > > > > > > > > > > > > > > > > > > >
Depends..... I would imagine the 16 amp breaker in the electrical panel has a built in lag time incorporated into it.
Does the 20 amp breaker in the Amp?
You might want to look into replacing the breaker in the Amp with a fuse.
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