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Electrical Panel Box With AC To DC Converter For RV / Cargo Trailer Remodel  

Published 01/07/2026

Question:

I’m doing a cargo trailer or older RV remodel and don’t mind modifying the cutout. Would one of these PowerMax power centers still work even though they are replacements for certain WFCO modelS?

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Expert Reply:

Ryan, absolutely - if you’re open to modifying the cutout or building fresh cabinetry, power centers like the PowerMax 45A # PM47VR, 55A # PM67VR, or 60A # PM77VR work very well in custom builds and remodels.

In those cases, the exact replacement list WF-8945, WF-8955, WF-8900, etc. matters less because you’re not constrained by the original opening. What does matter is matching the AC service 30-amp vs 50-amp and choosing a DC converter size that fits your battery setup.

Many DIY builders choose these PowerMax units specifically because they combine AC distribution, DC fusing, and charging into one clean install. What kind of shore power are you planning to run - 30A or 50A? And what electrical loads and which batteries do you plan to use? I can narrow everything down for you.

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