Good job, Weezard! I am an old electrician/technician.

As you explained, If your fuse or circuit breaker is rated to 'blow' or 'trip' at a given value you wouldn't want to be too close to that value when sizing your circuit. Otherwise the circuit breaker may open inconveniently. 80% is the maximum value you want to put on any fuse/breaker.
Shovelhandle Reviewed by Shovelhandle on . LED-WATER-HEATSINK Hello! I am a noob DIY-LED-GUY, in need of assistance. Now, I'm about to fire up an LED-DIY grow and since this is my first time ever making an LED-LAMP I've decided to jump straight into the deep end of the pool and do a water-cooled rig. As pipes are mostly round there was an issue with lack of flat space to mount the LEDs on and the right parts was hard to find, so it kind of just ended up like it is. My question is: will it work? I have an aquarium pump that goes between the Rating: 5