[tauntdesigns]

Mariss,

If I'm reading that right, I need to add an extra wire to my system.

Right now I have the 3-wire ac cord coming into my driver control box. The GND is connected to chassis, the dc power supply's chassis(heatsink) is bolted to control box chassis, as is the Geckos. I have 1 wire from dc GND (-) going to a terminal strip and 3 wires going to the 3 Geckos. If I read correctly, I need to add 1 more wire from the terminal strip to the chassis. ???

I have an old house with only 2 wire receptacles (i've been using an adapter) and we have big storms here in Oklahoma...... I been running this system for about a year now (hobby use).

Edit: The alum base plate that I am calling chassis is surrounded by wood outer shell.. Don't know if that makes a difference.

Thanks,
Jack