Abstract: A spacer for use in a branching electrical connector comprises two jaws and clamping device for clamping the jaws together. At least two parallel channels are defined by the jaws, the spacer being adapted to hold one of the channels temporarily at least partly open. Overridable abutment on the spacer yield when sufficient force is applied to the jaws by the clamping device to enable the temporarily open channel to be closed.

Abstract: A branch connection accessory device for an insulated branch cable to be connected to an insulated main cable comprises a two-part clamping system. This is adapted to clamp the branch cable between the two parts, at least a first of which is electrically conductive. An insulated conductor appendix is factory-fitted, electrically connected and mechanically joined to the first part. It is adapted to be connected to a non-separate branch connector having two jaws, to one of which the appendix is connected and the other of which is connected to the main cable. An insulative seal envelops the device, a hole in the seal providing access to the first part. A well in the seal in line with the other part enable the latter to be operated. The device therefore constitutes a sealed, insulative branch connection accessory device.