There are many electrical hazards in industrial plants including arc blasts, shock and arc flash. These can result in serious injuries. Accidents involving electricity may sometimes be fatal. Industrial plant environments create potential for these events to occur not only to plant owners, but also to maintenance staff.

Electricians often assume that these hazards do not apply to them. These beliefs often persist until a major incident occurs that results in both financial and personal repercussions, that result in a change in policy within the plant.

Implementing policies that encourage a culture of electrical safety doesn’t have to be reactive. Taking steps to minimize the risks associated with electrical hazards will create a safe working environment for everyone, and not just the maintenance team.

One of the most important aspects of enhancing safety is establishing a routine for the maintenance of electrical equipment in the facility. This is not only vital for optimizing the performance of the equipment, but also ensuring reliability, safety and preventing unnecessary downtime.

Once you have decided on using prefabs, the best approach starts with an honest assessment of available skills, facilities and tools. In addition, the contractor will have to decide on whether to carry out the prefab work in-house. Other options include a third party’s workshop.

If lacking in the required skills or other requirements, the contractor will have to either train or hire the right staff and acquire all the tools for implementing the project to completion. All these costs will affect profitability and should be considered.

Clear communication before and during the construction phase is essential for the success of prefabrication. The contractor should coordinate with building owner, suppliers, partners and contractors in other fields.  This ensures a smooth project flow. It should be simple to make adjustments as needed.

For the prefab process to succeed, the contractor should pay attention to the following:

Since electrical work isn’t for amateurs, many homeowners don’t know much about the electrical systems in their homes. With all the wiring hidden behind the walls, it may be that all you know is what you learned in your pre-sale inspection -- if you remember, that is.

When it comes to electrical infrastructure, one attribute that sets homes apart is the type of wiring in the walls. And for several decades’ worth of older homes, that type is old-fashioned knob and tube wiring.

What Is Knob and Tube?

Knob and tube wiring dates all the way back to the 1880s, but it was still in widespread use as recently as the 1950s. For most of its heyday, it was the most economical choice for wiring a new home, both in terms of installation and cost of materials. But by the 50s, mass production of modern electrical cables offered a cheaper, safer alternative.

This type of wiring consists of two wires -- a hot wire and a neutral wire -- strung within walls and above ceilings using porcelain knobs and tubes. The tubes provided a safe place to run wires through studs and joists, and the knobs supported the wires and made it easy to wrap them around corners.

The wires are protected with sheaths. In the early days, these were made of treated cloth, but electricians eventually switched to rubber. Neither material was designed to last forever.

Is it Safe?

Electrical code prohibits the use of knob and tube wiring in most new construction, and homeowners insurance companies often won’t insure homes until they’ve replaced these systems. While it’s true that it’s not the safest choice, knob and tube wiring can still be used safely, but with limitations and special precautions.

One thing knob and tube wiring still does well is release heat. Because the wires are spread out and suspended in air, there’s lots of room for electrical heat to dissipate, which is good for energy efficiency and the wiring itself. But that also means knob and tube wiring can endanger flammable materials like insulation.

To safely use this wiring in any structure, you must be certain that all wiring is clear of flammable materials and that the system is well maintained.

What About Limitations?

Another risk with knob and tube wiring is that there’s no ground wire, which increases the possibility of electrical shock. It also means you can’t use any electronics or appliances with a three-prong plug, as the third prong connects to the ground wire. This inconvenience is often what motivates homeowners to upgrade.

But even where knob and tube can be made to work, homeowners may want to expand that system to other areas of the home. This often means splicing new wiring and fixtures into the existing system, which can lead to overloaded fuses.

A dangerous mistake is to simply upgrade the fuses when this happens. This will get the juice flowing again, but the wiring can get dangerously hot, and the protective sheaths may have deteriorated over their decades of service. It’s a fire waiting to ignite.

Stay Safe

If your home still has knob and tube, it’s important to have it periodically inspected. Even if it’s deemed safe, there’s no substitute for the safety and convenience of modern wiring. And if you’re not sure what kind of wiring you have, just reach out to your local, licensed electricians for a quick inspection!

It has been six months since I started writing for the Light Reading blog, and boy has it gone by quickly. It’s hard to believe that I have written almost 50 posts! To mark this occasion, here are the six blog posts YOU liked best during my last six months of blogging.

1. via Strobel Design Build

In retrospect, I can see why this has been such a hit with the Light Reading readership. I mean, when it comes toMinions Web

This post was one of those visual, inspirational posts that I enjoy reading on other blogs. Instead of giving step by step instructions, this blog post shows you a bunch on interesting things that people have done with LED Matthew Danser Photography

This was my first blog post for Pegasus! In it, I interview Austin, TX photographer Matthew Danser to find out how he “paints” with light in his photos. We learn some interested photography tricks – tricks that I try out in the next most popular post.

5.

In this post I take some of Danser’s suggestions and experiment with “light painting” in my apartment at night. There’s lots of fun stuff here, and things get a little weird with my designs, but hey! It was an experiment! No stuffed animals were hurt during this photo shoot.

6.