Does anyone here know how the pilot pin on 63A (and larger ?) BS4343 connectors is supposed to be used/wired ?
It's more from curiosity than any specific need - I dislike having things where I don't know what they're for ! While we have a 63A inlet for an alternative supply to our server room UPS, the only use we've made for it (and are likely to in the foreseeable future) is to run the system from the DB in the next unit (we have several offices opened up to one space) when working on the normal supply. We've had to do this in the past when the switch-fuse downstairs in the meter room got "rather hot", and I believe we've a meter change due that we've been putting off. So at the moment, the pilot pin isn't connected to anything on either the cable or the switch on the wall.
All I can find are comments such as "the pilot may be used for a variety of purposes including connection to control circuitry for electrical interlocking" (from the MK Commando datasheet). Others mention the pin, mention that it makes last/breaks first but give no more information than the MK sheet.
From that, I assume there's no standard use for it - so I can just carry on ignoring it. And I assume that in the fairly unlikely case of us hiring a genny, we'd not find ourselves with the genny refusing to power up it's outlet because it's not connected.
It's more from curiosity than any specific need - I dislike having things where I don't know what they're for ! While we have a 63A inlet for an alternative supply to our server room UPS, the only use we've made for it (and are likely to in the foreseeable future) is to run the system from the DB in the next unit (we have several offices opened up to one space) when working on the normal supply. We've had to do this in the past when the switch-fuse downstairs in the meter room got "rather hot", and I believe we've a meter change due that we've been putting off. So at the moment, the pilot pin isn't connected to anything on either the cable or the switch on the wall.
All I can find are comments such as "the pilot may be used for a variety of purposes including connection to control circuitry for electrical interlocking" (from the MK Commando datasheet). Others mention the pin, mention that it makes last/breaks first but give no more information than the MK sheet.
From that, I assume there's no standard use for it - so I can just carry on ignoring it. And I assume that in the fairly unlikely case of us hiring a genny, we'd not find ourselves with the genny refusing to power up it's outlet because it's not connected.