Connecting a solar panel to Sargent EC450 PSU Jun 07, 2014Connecting a solar panel to Sargent EC450 PSU. Thread starter Sidney; Start date Apr 14, 2013; Sidney Free Member. Jan 27, 2013 1,358 864 Next I have to connect the 12v out to the EC450 and the wiring diagram says to use P14. The problem? There's already a Brown/Blue wire already connected to P14. or post the question on Swift-talk as SARGENT EC155 USER MANUAL Pdf Download. Sargent EC155 User Manual . Power control system. The following diagram shows the typical configuration of the EC155 system. The key component is. the EC155 power supply unit (PSU), which is the hub of the system and provides connectivity to the Summary of Contents for Sargent Technical Support | Sargent Electrical Company Stock Take Due to the company stock take, we will be unable to dispatch any orders from Thursday 28th November until Monday 2nd December apologise for any inconvenience caused. Please note: Our technical support lines are still open during this time.