What do you use to make wiring connections to the relay, at the relay terminals?
In my experience, wire terminals for CT wiring are always ring-type terminals and wire terminals for VT wiring are always fork-type terminals. I’ve seen some drawings and specs for individual jobs require that, but are there any industry standards that require it? I’ve looked at C37.20.2 and it isn’t in there (it requires solderless crimp-style terminals, but doesn’t go any further than that). I’m not sure where else to look.
Someone is telling me that VT wiring should also use ring terminals and I haven’t ever seen that anywhere. I prefer forks whenever possible, but I always use rings for CT wiring to prevent unintentionally open circuiting the CT. I could understand wanting to use rings for trip signals, but for testing/maintenance purposes I would actually prefer forks on trip wires in case you need to lift the trip wiring from the relay.
