Joseph Cardona

Senior Applications Engineer Hubbell Power Systems, Inc.

Recent Posts

The Importance of Cluster Bars While Performing De-Energized Line Maintenance

Posted by Joseph Cardona on Mar 17, 2021 8:00:00 AM

To maintain worker safety while performing de-energized and grounded line maintenance, two important factors must be accomplished in the event of a fault:

  1. The fault current must be cleared in the fastest available time
  2. The current across the line worker must be limited to a safe level by creating an Equi-Potential Zone (EPZ)

 

Read More

Topics: Lineman Grade Tools, Temporary Grounding

Personal Protective Ground Set Care and Maintenance

Posted by Joseph Cardona on Feb 19, 2021 8:00:00 AM

CHANCE® Personal Protective Ground Sets are an important tool for lineworkers to use during de-energized line maintenance. The ground sets serve two purposes; one is to provide an Equi-Potential Zone (EPZ) minimizing current flow through a lineworker and the second is enabling the clearing of the fault in the fastest available time. In order to make sure the personal protective ground sets will function properly during daily use, daily inspection and periodic testing must be performed.

Read More

Topics: Lineman Grade Tools

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.

Read More

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.

Read More

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).

Read More

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. 

Read More

Topics: Lineman Grade Tools

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.

Read More

Topics: Lineman Grade Tools

Cleaning & Inspecting Your Gloves in the Field

Posted by Joseph Cardona on Oct 24, 2018 3:26:00 PM

Properly inspecting and storing your rubber insulating gloves could save your life. Rubber insulating gloves are the first line of defense against electric shock. ASTM F496 requires that rubber insulating gloves be inspected and electrically tested at a maximum interval of every six months, whereas field inspection is necessary prior to each use. The date code on the rubber insulating gloves should be checked to verify the most recent testing of gloves is still valid.

Read More

Topics: Lineman Grade Tools

Protecting Lineman with Aqueous Dipped Rubber Insulating Gloves

Posted by Joseph Cardona on Jun 5, 2018 11:12:00 AM

There are different methods to produce rubber insulating gloves. Hubbell Power Systems’ CHANCE® Lineman Grade™ gloves are produced using an environmentally responsible aqueous dipping process. 

Read More

Topics: Lineman Grade Tools

6 Tips for Rubber Insulating Gloves

Posted by Joseph Cardona on May 30, 2018 11:40:00 AM

Rubber insulating gloves are a critical piece of Personal Protective Equipment (PPE) when working on energized power lines. They should be visually inspected every day before use and properly stored when not in use. Here are 6 tips for inspection of rubber insulating gloves. 

Read More

Topics: Lineman Grade Tools