(EN) Floating connector 18 fits within chamber 14 of bracket 12 to provide connection to junction block 88. Within the chamber 14 the connector 18 is able to move between upper 42 and lower 46 stops. Movement between the stops is controlled by a bolt 96 which serves to pull the connector 18 up and down. When the connector 18 is in contact with the upper stop 42 electrical contact is made between it and the junction block 88; when it is at the lower stop 46 the electrical contact is broken. A feature of the nut 72 and bolt 96 arrangement prevents over tightening and damage to the apparatus.