Burned fuse 20 amps on tow vehicle

[denism28]

Many tow vehicules with 20 amp fuse burned it while towing a one battery RV. Just cut away the plastic on the yellow fuse where you see the pins on the outside , put a bit of solder on them pins and solder two wires no 16 and bring these wires to a 20 amps breaker et voila.... no more burned fuse and no more dead battery. but the same protection.
Youy can do the same to the power output fuse and to the cigar lighter fuse .Edited by: denism28

[harley]

Why would you mess with a safety device? The fuse is sized for a reason .my opinion.

[socoguy]

Originally Posted by harley

Why would you mess with a safety device? The fuse is sized for a reason .my opinion.

X2

[denism28]

The protection is the same ;20 amps fuse or 20 amps breaker. The advantage is if the current inadvertantly goes over 20 amps , the breaker opens, cools after a time and gives back the connection so you dont get cought with a dead circuit and no fuse available to replace. It is very handy for the 12 volt feed to the TT. if you have 1 battery which is very low after 1 night of heating or a few days of camping without electricity and the current goes over 20 amps when startring the car, after a time the breaker opens , cools and closes again which charges the battery in steps until the needed current is below 20 amps then the charge goes steady. With a fuse ; no charge.

[NorskeNY]

My thoughts:
If properly designed the CB will work as well as the fuse. The big
misconception is that they are many times used without proper design.
CB's need to be properly designed and selected using their trip curve
characteristics. Fuses in themselves also have similar but different
characteristics like fast acting, slow blow as well as interrupt and
surge current ratings. Make sure that the CB is designed specifically for automotive circuits.

Circuit breakers are fine for lights, relays, </span>etc. but they are way too slow for electronic devices.



If the circuit continues to trip you should
resolve the problem. If anything, go with the manual reset breakers.
Automatic reset CB's can fatigue circuits, degrade over time and are typically
intended for specific circuit applications.

[Hamops]

Hhhhmmmmm? In the first place, I wouldn't replace a fuse or breaker with wires that carry an equal current. It's just not safe. The wires will never fail as quickly as the fuse or breaker. More than likely you'll have a fire before you have a failure. PUT the fuse BACK into the circuit. If you are charging your battery at a current in excess of 20 amps, then I suggest that you have a closer look at your battery. It may be failing.