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Hello. I am looking to install both victron energy MPPT 100-20 charge controller and isolated DC-DC charger. I want to crimp the square compatible lugs to the end of the wire to connect to the controllers. The connections on these are two different sizes. Does anyone know the correct size for both of these connectors/adapters and possibly where to purchase online (amazon?)?
Thanks
Colt
The lugs size will be related to the cable size.
For example cable size 16mm lug size 16mm x (hole size of where you attach)
If you are talking about the rising clamps in the battery connection of the mppt and DC to DC, you do not need anything on them, they are designed to crimp directly on the stripped cable. Otherwise Google boot lace ferrules (I don't agree with using them) related to the cable size of choice.
@Alexandra "...boot lace ferrules (I don't agree with using them) related to the cable size of choice..."
There's some good background (new to me anyway) from ISO 13297 in the new UK IET’s "On-Board Guide: Electrical Safety for Small Craft" with a brief summary on when and when not to use ferrules:
Looking at the spec sheet for the 100/20 the wire connections are 10AWG if you want to get a ferrule kit and crimper from Amazon. Not sure of the exact model of DC-DC but look at the technical section of the manual and the power terminals will tell you what size wire should be used. Get a ferrule kit that covers both. Like @Alexandra said it is not really necessary.
