Powering Your Tools: How to Avoid “Bad Power” on the Jobsite

• The right power setup is essential for installation tool performance, safety, and longevity.
• Extension cord length, wire gauge, and amperage rating all affect power delivery and should be matched to the tool’s requirements.
• Longer extension cords require heavier-gauge wire to help prevent voltage drop and reduced tool performance.
• Generators must provide stable, consistent power. Avoid eco mode, welding generators, and using boom lifts as power sources for installation tools.
• Properly maintained batteries and correctly matched power sources help keep cordless tools performing reliably in high-demand applications.

Tools are only as good as the power behind them. Installation tools often draw significant current and depend on a stable electrical supply to operate effectively. Inconsistent or “bad” power, often caused by undersized extension cords or unsuitable power sources, can lead to:

• Reduced tool performance
• Overheating and premature wear
• Tripped breakers or blown fuses
• Damage to the tool’s motor and internal components

Using the correct power configuration ensures tools run safely and efficiently under load.

Different regions use different plug and cord standards. When choosing extension cords for installation tools, these standards matter, especially if you travel between sites or share tools with others.

When selecting or installing cords, consider the following:

Amperage & Voltage Rating: Match the cord’s rating to the tool’s requirements.

Cord Length: Longer cords increase resistance and can cause voltage drops. Use the shortest cord that safely reaches the work area.

Wire Gauge (AWG): Lower gauge numbers mean thicker wire. Heavy-duty tools often require lower AWG cords.

Construction for Environment: Choose outdoor-rated, rugged cords designed to resist wear, moisture, and jobsite abuse.

Regional Compatibility: Make sure the cord’s plug type matches local outlets or use appropriate adapters.

Common Plug Standards

In the U.S. and Canada, power plugs and outlets follow the National Electrical Manufactures Association (NEMA) standards. This includes:

• NEMA 1-15: Two-prong, ungrounded
• NEMA 5-15: Three-prong grounded (most common for tools)

Using the wrong extension cord is one of the fastest ways to end up with “bad power.” That’s why we provide a recommended extension cord chart, to help you choose the correct cord gauge and length for your tool and jobsite setup.

Here’s how to use it:

1. Start by Finding Your Tool

Locate your tool in the middle of the chart. Tools are grouped by application to make selection easier. Each tool model also lists its maximum current (A) in each column, which serves as the starting point for choosing the correct extension cord.

2. Determine Your Extension Cord Length

Measure the total length of the extension cord you plan to use. As cord length increases, electrical resistance increases as well, meaning longer runs require a heavier (lower-numbered) wire gauge to avoid voltage drop and “bad power.”

3. Match Amps, Length, and Gauge to the Chart

Using your tool’s maximum amperage rating (A), follow the chart to identify and match the recommended cord length (ft) and wire gauge (AWG) listed under the Maximum Amperage Rating row. Be sure to stay within the column where your specific tool is located. This ensures the cord can safely deliver consistent power.

4. When in Doubt, Go Heavier

If you’re still unsure which cord to use, always choose the heavier-gauge extension cord. A lower AWG number indicates thicker wire and can help reduce voltage drop on longer runs.

5. Avoid Common “Bad Power” Mistakes

• If switching between tools, always verify the extension cord is still rated for the new tool’s current.
• Don’t use light-duty household cords for high-demand tools.
• Don’t daisy-chain multiple extension cords.
• Don’t ignore voltage drop on longer runs.

Choosing the correct cord gauge helps ensure consistent power, safer operation, and longer tool life.

Not every power source is created equal. Avoid “bad power” by following these tips:

Standard Outlets

Most installation tools plug into grounded 120 V outlets. Always verify that the outlet is properly rated and capable of handling the tool’s electrical load.

Generators

Generators are a common solution for off-grid jobsites, but their stability matters just as much as their size. A generator may have enough rated wattage to power a tool but still cause problems if it cannot provide consistent voltage under load. Always verify that the generator meets the tool manufacturer’s electrical requirements.

• Do not run generators on eco mode. Avoid operating generators in eco mode when powering high-demand installation tools. Reduced engine speed can affect the generator’s ability to respond to changing loads and may result in inconsistent power delivery.

• Do not use welding generators. These generators are designed for welding loads and will not provide stable, continuous power needed by installation tools.
• Do not plug tools into boom lifts. Boom lifts are not designed as power sources and connecting tools can create serious electrical hazards.

Battery Power

Cordless tools are increasingly popular for their convenience and portability. However, batteries must be properly matched to the tool’s power requirements and well maintained to deliver consistent performance, especially for high-demand applications.

Always fully charge lithium-ion batteries before storage. Storing batteries without a full charge can lead to deterioration, significantly reduced run time, or charging issues when the battery is needed again.

If your tool isn’t performing properly, check your power first:

• Is the power source providing the correct voltage?
• Is the extension cord the correct gauge and length?
• Is the cord damaged or excessively warm?
• Is the circuit overloaded?
• Is another high-demand tool sharing the circuit?
• If using a generator, is it appropriately sized and operating in the correct mode?

If the problem persists, have the tool inspected by a qualified service provider.

What is “bad power”?
“Bad power” refers to inconsistent or inadequate electrical supply caused by improper cords, outlets, or power sources. It can result in poor tool performance, overheating, damaged components, or unsafe working conditions.

What happens if I use the wrong extension cord?
Using an undersized or improperly rated extension cord can cause voltage drop, overheating, tripped breakers, and tool failure, including damage to the motor and internal components.

How do I know what extension cord gauge I need?
Check your tool’s amperage rating and choose a cord with a low enough AWG (thicker wire) to safely carry that load. Check our cord chart for recommended cords.

Can I plug installation tools into a generator?
Yes, but only if the generator provides stable, continuous power and is properly sized for the tool. Avoid eco mode and welding generators, as they can cause inconsistent voltage and “bad power.”

Why shouldn’t I use eco mode on generators?
Eco mode adjusts engine speed based on load, which can cause voltage fluctuations. Installation tools require steady power, and inconsistent voltage can reduce performance and damage the tool.

Why are welding generators not recommended?
Welding generators are designed for welding arcs, not continuous tool loads. They often lack the voltage stability required for installation tools and can lead to tool damage.

Can I plug my tools into a boom lift outlet?
No. Boom lifts are not designed to be power sources for installation tools. Plugging tools into them can create serious electrical and safety hazards.

Are power strips safe for installation tools?
Standard power strips are not recommended for high-draw tools. If you need extra reach, use heavy-duty extension cords rated for the tool’s amperage instead.

Are battery-powered tools safer than corded tools?
Battery-powered tools eliminate cord-related risks, but they still require proper battery selection and maintenance. High-demand applications may still perform better with properly supplied corded power.

How often should I inspect power cords?
Inspect cords before every use. Look for cuts, fraying, exposed wires, damaged plugs, or loose connections. Damaged cords should be removed from service immediately.