The nLight®nPP16 Series power pack is the workhorse of an nLight® system. Each unit has two important responsibilities: providing system power and switching lighting loads. To provide system power, the power pack transforms Class 1 line voltage (120/277 VAC or 347 VAC) to Class 2 15 VDC. For switching a lighting load, an internal 16 A latching relay is used. The power packs two RJ45 connectors make control wiring with standard CAT-5 cabling easy and clean. For simplifying installation, power packs have an elongated chase nipple that allows them to be attached either directly through a 1/2 in knockout into a junction box, or inside an adjacent box for meeting specific local code requirements in ceiling plenums.