Roofing Tools, Drains and Resources

With proper operation and regular maintenance, high-quality power tools can last well beyond their warranties. Unfortunately, tools with advanced electronics and circuit boards—such as the Leister VARIMAT V2—also require the right power sources for maximum life and performance. 

When using an AC-power commercial portable generator, the consistency of the electric current is specifically important. On most generators, this is listed as total harmonic distortion (THD). The higher the THD, the greater the fluctuations in current flow. If THD is too high, it will overheat critical components, and if it is too low, it will negatively impact performance.

In this post, we will explain total harmonic distortion’s impact on power equipment, and detail what you need to consider when purchasing a commercial portable generator for your construction site.

Recently, a VARIMAT V2 customer came to us because his welder had shorted out and would no longer turn on. We quickly found the cause of the issue. The plug that connects to the machine’s power cord was changed from the 3-pronged 240V Leviton Wetguard plug we installed on the machine before it was sold to a clamp plug.

Clamp plugs attach by tightening two brackets down on opposite sides of a cord. When this happens, plastic fins on both brackets crimp the power cord, restricting the amount of electricity that can flow through (see right). This leads to a power back-up within the machine, which can melt compontents, catch wiring on fire, and short-out circuit boards. 

Power quality and availability can vary from construction site to construction site, which is why commercial portable generators are a must for contractors. With a reliable power source, you'll be better positioned to get projects done on time, keep your tools running consistently, and limit downtime, all of which can combine to help make your business more profitable. 

When evaluating commercial or industrial portable generators, it’s important to consider their noise levels, as many cities have local noise ordinances in place with which construction equipment must comply.

Generally speaking, noise levels are measured in decibels (dBA), a metric commonly listed on generator specification sheets. Noise levels can vary significantly based on generator size and the manufacturer, ranging anywhere between mid-50 and mid-80 dBA. So, how do you know exactly how loud is too loud? We’re here to help.

In an effort to cut down on air pollution, national and state organizations have instituted legislation that regulates the amount of carbon released into the atmosphere by engines. 

When you’re on a job site, a reliable power source is critical to productivity and, ultimately, profitability. A faulty or malfunctioning portable generator can cause poor tool performance, delays and lost revenue. 

There is a lot to consider when purchasing a portable generator for your commercial and roofing needs. To help, we’ve answered some of the most frequently asked questions we get about portable generators.

Improper or careless use of a portable generator can result in potentially serious safety hazards, including personal injury, electrical shock, and fire. Alleviate these dangers, and achieve safe, reliable performance, by adhering to the following 10 precautions.