On Sunday, July 14, 2019 at 2:40:14 PM UTC-4, John DeRosa OHM Ω http://aviation.derosaweb.net wrote:
On Saturday, July 13, 2019 at 11:24:31 AM UTC-5, soaringjac wrote:
Anyone know what fuse rating i would need for an old Edo-Aire RT-551 radio. Its marked inop now but i still want to replace the fuse in the panel for it

Between you, me, and the fence post, I prefer breakers rather than fuses. Breakers are easier to reset while in flight than replacing fuses.

Remember to use a minimum of 3A fuses/breakers or risk loosing precious volts. See page 86 of this presentation http://aviation.derosaweb.net/presentations/#wiring.

John OHM

Are you saying there's (more) voltage drop as the fuse gets smaller? I know, I should never question a guy about electronics with a guy that has OHM in it! What is the resistance load, in ohms, for a 1, 3, or 5 amp fuse?

Also, we are trying to protect equipment, AT the expense of any voltage drop, if there is any... Regards, Gary