jgvergo
Valuable Member
I have a BRS T5 retrofit ballast and I'm connecting it to my Apex. The Neptune manual makes two contrary statement! Which is right?
The Neptune cable has 8 wires but this time only 4 are used – the Red and Black. Contrary to the electrical norm, the BLACK wire is the signal wire (+) and RED is the ground (-). YELLOW and GREEN are not used. Neptune certified and tested their system using a Sylvania QT2X54 dimmable T5 ballast which will support (2) 54 watt T5 HO fluorescent bulbs. As you can see from this photograph, there are separate connections for 120v power as well as the 0-10V DC control. Note the polarity here (+), (-). You must connect the control wires with the proper polarity. If you reverse the polarity the ballast will not function and you’ll make yourself nuts trying to figure out why. The BLACK wire from the Neptune 2 Channel Apex to Light Dimmable Cable is (-), the RED is (+).
The Neptune cable has 8 wires but this time only 4 are used – the Red and Black. Contrary to the electrical norm, the BLACK wire is the signal wire (+) and RED is the ground (-). YELLOW and GREEN are not used. Neptune certified and tested their system using a Sylvania QT2X54 dimmable T5 ballast which will support (2) 54 watt T5 HO fluorescent bulbs. As you can see from this photograph, there are separate connections for 120v power as well as the 0-10V DC control. Note the polarity here (+), (-). You must connect the control wires with the proper polarity. If you reverse the polarity the ballast will not function and you’ll make yourself nuts trying to figure out why. The BLACK wire from the Neptune 2 Channel Apex to Light Dimmable Cable is (-), the RED is (+).
