Wiring up a USB charging port in +ve earth
Posted: Thu Nov 07, 2024 6:29 pm
Hi gents,
Quick question for the group; I purchased a USB charging port with a plastic body as well as a plastic bracket to completely isolate it from any metal on the car. Being that the car is +ve earth and the fact that the socket will be totally isolated from any metal, should I run the hot wire to the + terminal on the USB and the earth to the - terminal on it or do I need to keep the hot feed to the - terminal on the back of the port and the earth on the + terminal? My only concern is charging my iPhone with the reverse polarity hence am wondering if I can wire the socket as normal (hot to + and earth to -) or if I need to hook it up the opposite way. I am aware that the end of the USB cord that plugs into the phone (it’s a USB-C actually) will need to be protected from touching any metal part of the car if the socket is wired as if positive earth so will take due caution there. I just don’t want to fry my iPhone or its battery. Thanks all in advance.
Quick question for the group; I purchased a USB charging port with a plastic body as well as a plastic bracket to completely isolate it from any metal on the car. Being that the car is +ve earth and the fact that the socket will be totally isolated from any metal, should I run the hot wire to the + terminal on the USB and the earth to the - terminal on it or do I need to keep the hot feed to the - terminal on the back of the port and the earth on the + terminal? My only concern is charging my iPhone with the reverse polarity hence am wondering if I can wire the socket as normal (hot to + and earth to -) or if I need to hook it up the opposite way. I am aware that the end of the USB cord that plugs into the phone (it’s a USB-C actually) will need to be protected from touching any metal part of the car if the socket is wired as if positive earth so will take due caution there. I just don’t want to fry my iPhone or its battery. Thanks all in advance.