What happens if I plugged a 20amp unit..15amp outl

I already have an electrician about to make the change for me, I was just curious if I did move later on and will need to do the same.....

I already have an electrician about to make the change for me......
12-17-09: Rapogee

Rapogee,

You will need a 20 amp branch circuit then. #12 awg wire minimum with a 20 amp breaker.

Just an added note if the breaker trips on occasion due to start-up inrush current of the Krell most electrical panel manufactures make breakers with a longer inrush current lag time.
Here is some info.
Jim

I've had my Krell(20 amp) plugged in to a 15amp outlet and circuit for 4 years and have never had it trip the breaker.

It's not just about tripping the breaker. With a big Krell, you need to ensure that input current is not constrained to get the best performance out of it, especially when driving difficult loads at higher volumes (I haved owned a FPB-600C driving Thiel CS5i's for 10 years).

I have the FPB200 (with 20 amp cord from Krell) but this is the smalles Krell power that will work and its not a problem...I did try replacing the FPB400cx and it trips, I believe thats the reason why. It was a loan so I was not prepared to try in for longer sessions but I believe and minimal volume it will play but when you demand the power...its not going to fly.

Rshad0000, out of curiosity which Krell were you using that actually worked on the 15 amp socket? Any of the FPB family by chance?