Wire Access Control with ADA openers and High In-Rush Power Supply for ELR Exit device

In some commercial applications, you may come across installations where the door latch requires a power supply that provides greater inrush (start-up) current than a normal power supply can provide or within the amp ratings of the access controller. Often these power supplies are located within 10-30 feet of the door and require a dry contact closure to trigger the power supply.  

If you are providing the wire between the power supply and the Electric Latch Retraction exit device or also known as selenoid type latch retraction, you MUST verify the wire size required. 18 Awg will not work!

You may have to run a  14 or 12-AWG wire depending on the wire length.