The length of a haging pendant light can be adjusted easily. Pendants typically can be shortened but not lengthened if you have not ordered enough cable. If you would like to lengthen the pendant you would need to purchase a new cable length.
Pendant Light: Shortening/ lengthening
Cable is held in place by cable clamps on the ceiling rose. There is generally a portion of cable that will sit in the ceiling which is then attached to the hard wiring of the building. Cable can be moved up and down after the cable clamp has been released. The cable can also be cut and rethreaded through the ceiling rose.
Cable lengths could also be shortened at the lamp holder. This would involve dissassembling the wiring and rewiring by your electrician.
