Choosing the correct VoltPassThru starts with the finished outside diameter of the cable and the type of installation. Select your application below for sizing tables, mounting-hole dimensions, and installation guidance tailored to Auto or Solar/RV wiring.
Find Your VoltPassThru Size
What are you installing? Choose the guide that matches your application and then verify your actual finished cable outside diameter before selecting a pass-through.
VoltPassThru Auto
For amplifier power cable, battery wiring, firewall pass-throughs, and vehicle electrical installations. Start with common AWG sizing, then verify actual cable O.D.
VoltPassThru Solar
For solar, RV, battery-bank, inverter, and enclosure wiring. Start with the actual finished cable outside diameter rather than conductor gauge alone.
How Sizing Works
Choose Your Application
Auto or Solar/RV.
Measure Your Cable
Measure the finished outside diameter, including the cable jacket.
Verify the Hardware
Confirm cable O.D. range, mounting-hole size, and usable thread reach on the selected guide.
Not Sure Which Guide to Use?
Measure the finished outside diameter of your cable and contact us with the measurement and a short description of your installation.
