I'm dealing with an equipment which has a lot of internal wiring. The system is powered in 12V but the wires carry a good amount of current (in excess of 10A). I need to connect different units with screws terminals (power supply, relays, potentiometers etc..) and for this purpose I am using insulating ring terminals which are crimped to the wire and then secured (for reliability issues) with an extra heat shrinking tube. The ring itself of the terminal is not insulated and a single fault condition could cause the terminal to touch any of other electronics inside the panel. In order to increase the reliability level which kind of insulation can I put on top of the screws of the ring terminals? Is hot melt adhesive a good option? Or is there a specific solution? I usually dont rely much on insulation that melts at low temperatures since high currents can cause quite an increase of temperature which can in its turn melt down the insulation and start a negative cycle which in the end destroys the lead.