Reducing Hazards of Step and Touch Potential

Posted by Joseph Cardona on Dec 28, 2020 2:00:00 PM

What is Step and Touch Potential?

While performing energized or de-energized line work, there are many opportunities for a line worker to encounter differences in electrical potential. Opportunities could include working near bucket trucks, underground gear, overhead switches, or in substations. When a difference in potential occurs across a worker’s body, current begins to flow. This current flow can be very hazardous as it only takes 50 to 60mA to become possibly lethal. These differences in potential can be categorized as step and touch potential. Step potential is defined as a difference in electrical potential between a worker’s feet and touch potential can be between a worker’s hands or hands and feet.

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Topics: Lineman Grade Tools, Safety

Primary vs. Secondary Protection For Rubber Gloving or Hotsticking

Posted by Joseph Cardona on Nov 11, 2020 7:00:00 AM

Energized line maintenance is a popular option for working on power lines. Two common methods for hot work include rubber gloving and hotsticking. These two work methods will utilize both primary and secondary levels of protection from energized lines and equipment. Live line barehand is another work method for working on energized lines and equipment but will not be discussed in this blog. This blog will discuss the differences between primary and secondary protection while using the rubber gloving or hotsticking work methods.

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Topics: Lineman Grade Tools

What Training Do Linemen Need Today and Considerations For Your Line Crew

Posted by CHANCE Lineman Grade Tools on Oct 16, 2020 10:00:00 AM

There are few jobs that are more dangerous than that of a utility lineworker. A commitment to safety is of utmost importance, both in the design of tools and equipment and in the training given to understand how to use them properly.

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Topics: Lineman Grade Tools

Cover-Up Equipment: Selection and Care

Posted by Joseph Cardona on Sep 24, 2020 8:00:00 AM

Hard Plastic vs. Rubber Cover-Up Equipment

Deciding which cover-up equipment is best for the job depends on several factors, including the system voltage, types of energized equipment, and work methods (rubber gloving vs. hotsticking).

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Topics: Lineman Grade Tools, Safety

Understanding Classes and Types of Rubber Insulating Blankets

Posted by Joseph Cardona on May 26, 2020 8:00:00 AM

Insulating rubber blankets for energized line maintenance come in a variety of sizes, classes and types. Each Class of insulating blankets has its own maximum use and testing voltages, as described in ASTM D1048 (see Table 1). The higher the class rating, the higher maximum the voltage rating is for the insulating blanket. 

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Topics: Lineman Grade Tools

CHANCE® Lineman Grade Tools™ Additional Cleaning to Help Prevent the Spread of COVID-19

Posted by Jeff Kopp on Apr 6, 2020 9:19:47 AM

During this time of heightened concern for cleanliness, here are some guidelines for additional cleaning of your CHANCE tools, without compromising the integrity of the equipment. It is recommended that you continue to follow safe working practices, increased hygiene, and proper distancing as indicated by the Centers for Disease Control and Prevention (CDC), OSHA, federal, state and local health departments, and your company’s work practices and procedures. 

Enhanced Cleaning Instructions*
Fiberglass Hotsticks, Instruments, Meters, Rubber and Plastic Cover-Up, Rubber Blankets, and Cable Jacket:

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Topics: Lineman Grade Tools, Safety

Why Use “H” Rated Clamps for Temporary Grounding

Posted by Billy Webber on Feb 28, 2020 10:42:09 AM

Prior to 2009, ASTM F855, Standard Specifications for Temporary Protective Grounds to Be Used on De-energized Electric Power Lines and Equipment only included one table indicating the specifics to which ground set designs were to be tested. This “Table 1” was based on a near symmetrical current, limiting the circuit inductive reactance to resistance (X/R) ratio to a maximum of approximately 1.8 (20% asymmetry).

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Topics: Lineman Grade Tools, Safety, Temporary Grounding

How often should you calibrate your CHANCE® Meters?

Posted by Chad Davis on Aug 27, 2019 8:00:00 AM

CHANCE® meters are used to detect line voltage, determine approximate phase-to-phase-voltage, check DC resistance in protective grounding sets, determine in-or-out of phase relationships, monitor leakage currents, and advise the operating condition of CHANCE hot sticks. Calibration of these meters is important in confirming their accuracy in the field and ultimately in helping to protect line personnel.

Incorrect meter readings could result in undetected or misread voltages that could be harmful to equipment and personnel.

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Topics: Lineman Grade Tools, Safety

Make a Smart Choice with a Smart Tool

Posted by Chad Davis on Jul 11, 2019 8:00:00 AM

No more squinting to read the voltage from the end of the hot stick – or relaying information to the crew on the ground. The new CHANCE® Transmission Multi-Range Voltage Indicator® (TMRVI), lets your entire team accurately monitor transmission voltages on a mobile device or Apple Watch using the free MRVI app with an easy-to-read interface.

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Topics: Lineman Grade Tools, Safety

Lineman Tools Tips: 5 Steps to Keep Cover-Up Equipment Like New

Posted by Joseph Cardona on Jul 2, 2019 2:45:33 PM

Download the Cover-up Care Guide

Here are five ways linemen can ensure their temporary protective cover-up equipment continues to function safely and for as long as possible:

  1. Take a close look every day

Don’t assume a cover is ready to use. Cover up may look fine at a glance, but it’s worth looking a little closer. Stretch out your rubber covers with a rolling or peeling action and look for cracks, scratches, moisture, or other defects. If you find something concerning, remove it from service and tag it to be tested or discarded.  Check the inside and outside surfaces as some defects may be hiding inside.

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Topics: Lineman Grade Tools