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March 2026  ·  5 min read If you've been in the spray foam industry for any length of time, you've probably come across the term "Tier 4." It can feel like just another regulation to keep track of — but understanding why it exists and what it means for your business can actually make things a lot easier down the road. What is Tier 4? Tier 4 is the EPA's most advanced emissions standard for nonroad diesel engines, introduced progressively between 2008 and 2015. It requires sig

For mobile professionals, your rig is more than just a vehicle—it’s the backbone of your business. Every component, from your proportioner to your power source, needs to be reliable, safe, and built to handle demanding job site conditions. One often-overlooked component that plays a critical role in performance is the fuel tank. When comparing options, steel fuel tanks consistently outperform plastic alternatives—especially for spray foam rig users. Built for Tough Job Site C

Did you know that Powerhouse Diesel Generators builds their generator trailers in house? This approach offers several advantages that can improve quality, reduce costs, and provide better customization options. Understanding these benefits can help customers make better informed decisions when sourcing equipment for power generation and generator transportation needs. Better Quality Control and Reliability For Generator Trailers When generator trailers are built in house, man

Why You Should Never Double Bond the Neutral on a Floating Neutral Generator in a Fixed Installation March 2026  ·  4 min read When connecting a generator to a fixed electrical system, few mistakes are as consequential — or as commonly misunderstood — as double bonding the neutral on a floating neutral generator. It's a wiring decision that can compromise safety, trip protection devices, and put you in violation of the National Electrical Code. Here's what every electrician n

PDG Technicians discuss the installation of a generator in a trailer, emphasizing the importance of keeping the neutral wire floating to ensure safety and proper functionality. March 2026  ·  4 min read Why the Neutral Must Stay Floating When Installing a Generator in a Truck or Trailer Installing a diesel generator into a mobile application — a service truck, spray foam rig, or work trailer — comes with its own set of electrical rules. And one of the most important is this: