I'm trying to wrap my head around fusing for a setup I'm planning. I have an EcoFlow Delta Pro that provides a 30 amp Anderson output. I want to connect it to a Victron 12-12 18 amp DC to DC charger, but Victron recommends using 60 amp fuses on both the input and output. My concern is whether using a 60 amp fuse on the outlet of my 30 amp EcoFlow would actually provide any protection. According to EcoFlow's specs, the Anderson outlet comes with internal fusing already. Would it be better to use a 20 amp fuse on the output from the EcoFlow to ensure everything works well with the Victron charger?
1 Answer
Totally get where you’re coming from! The 60A fuse is intended to safeguard the DC-DC converter's input from overloads. You could add a 20A fuse on the EcoFlow’s output, but keep in mind, it might blow if you push larger loads. Just so you know, the internal fuse of your EcoFlow that connects to the 30A output should be rated below 60A to meet the Victron's requirements. Is there a specific reason you chose the charger?
Thanks for clarifying! Just a thought: if the charger tries to pull more than 30 amps, wouldn’t the EcoFlow’s 30 amp fuse trip before the 60 amp one blows?
I opted for the DC-DC charger because I started with a 100Ah lithium battery for my van project but quickly outgrew it. I want to keep it topped off using the EcoFlow to extend my setup's capacity. Plus, I have an alternator charger for the EcoFlow too, so I won't be relying on the alternator.