What in the world are you guys talking about or worried about? If you get a 30 or 75 amp unit, it doesn't matter if the fuses are 30, 35 or 40 amps on any of them. A pair of 30s on all of them would be fine I would think. These are reverse polarity fuses AFAIK and enough to protect the unit if we accidentally cross the battery leads. Check their amp output if you have the ability. Mine cranks out 3% more than rated when my batteries are low, except our PD didn't after 15 mins. FWIW, my Iota did too. We have a fleet of RVs so luckily can test several of them. I like the Boondocker and waiting for the adjustable one to arrive.
