[JRTJH]

^^^ I agree with Marshall's comments about not "compensating with a larger amperage fuse/circuit breaker/auto-resetting fuse...

To make a comparison, an electric space heater with coils or wires that glow red to produce heat is essentially similar to your RV wiring if you take away the insulation on the RV wiring harness. Space heaters are "designed with too small wires and a too big fuse" which allows the wires to carry more current than the insulation can protect against. So, what happens is the wires get "red hot" and produce heat that's radiated into the cabin.....

In your RV wiring harness, installing a "too big fuse" to replace the protective fuse "indicated for the size wiring in the trailer" can make the underside of your trailer into a "electric space heater"... Once the insulation on the wires under your trailer is burned away, the heat produced can easily (and readily) ignite the insulation and the wood substructure. When that happens, there is precious little time to escape the burning RV.....

Never "up-size a fuse" unless you know precisely what you're doing!!!!!