I need to power up 4 resistive loads (at around 1A of current each, maximum), but the load provides only one returning ground capable of supporting 4A. I found that if I split this ground to 4 small wires, those can be put together with the other 4 supplies of each resistor, in one handy 8-pin connector.
In theory this split could work, since each of the 4 wires has more or less the same resistance, and so an average current of 1A can flow in each conductor.
But, is it safe in practice? Is there any lack of safety, or am I missing something else?
Thank you
Best Answer
This is not a problem as long as the smaller wire is rated at 1A or better. It is even regarded as good practice for some applications as it gives better noise isolation between the loads.
Edit There was some ambiguity in my original answer I was referring to the situation where one ground wire was used for each individual load.