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Archive for December, 2009

Safety Supplies Are Necessary

Tuesday, December 1st, 2009

If you happen to have the responsibility of providing your business or company with the necessary safety supplies and/or safety glasses, your job is even more important. You know you need to keep people safe. Maybe you do not have an endless budget, but you still need a superior level of safety. So this means you have a lot to consider. Your task is important, and one wrong or “bad” choices can have fatal mistakes.

No matter why you need that safety supplies and/or safety glasses, you know the importance of getting more than you need. You give more in your day, and you expect the same respect from those around you. That is why you will get the best – no matter the cost.

There are many categories of supplies or glasses you may find beneficial for your workplace or worksite. Take a look at what you need, and then you can shop smarter knowing what you can get and what you will be offered.

No matter what you need to protect you will find options that protect you as well as your clientele. Keeping you safe is important; keeping your client safe is important. These are great for any profession ranging from construction to food prep to medical facilities and surgeries. No matter what needs covered, what needs protected, or what needs sanitized, you will discover that you will find the safety supplies and/or safety glasses you need when you trust the many reliable and reputable companies on the market today.

You will discover a company that offers you more than you need along with a superior design and price tag. You can get the protection you need without spending a lot of extra cash. In fact, you may discover that you can find more than you expected for a lot less than you thought you would pay. You may want to insure that the supplies and/or glasses you purchase meet or exceed all industry standards as required by your institution and by law.

Cable Selection

Tuesday, December 1st, 2009

The selection of electrical cables should be done according to the current, voltage and power requirements. While selecting a electrical cable, you must keep two things in mind.

* The cable you choose should be able to carry the current load without overheating. The cable should withstand the extreme conditions of temperature during its entire working life.

* The cable should provide sufficient sound earthing, to allow the fault current to trip the MCB or fuse in a short time, and to limit the voltage to which people are exposed to a safe level.

The two major safety hazards that needs to be controlled in a wiring system is Over-Current and Electric Shock. Protection against over-current also provides protection against electric shock. Over-current is the increase in the amount of current above the level for which it is designed. Over current are very dangerous as they lead to a risk of fire.

When current flows in electrical cables it is normal that they become warm, and heat is generated. The level of heat generated by electrical cables is safe only when it is kept within reasonable boundaries. The standard PVC-insulated cables are designed to run at temperatures up to 70 degrees Celsius. Anything beyond that can be a risk.

Overload occurs when the current flowing is too high for the system. They don’t impose any immediate damage to the cables or surroundings. The danger is supposed to enhance if the duration of the overload remains for a longer period. In that situation, due to overheat the covering will melt leaving the bare conductors exposed. The heat can lead to cause fire. The main reasons for overloads in domestic setting are : plugging a heavy duty appliance into a supply insufficient for that, and using too many consumer appliances at the same time.

A short-circuit occurs when live and neutral or live and earth that bypasses an appliance is connected. This connection will have a very low resistance and the current flowing can be hundreds or thousands of times higher for the system. This is called short-circuit current or the fault current. The short-circuit can happen if the wires in a mains electrical plug become loose and touch one another. Handling short-circuits is not only important to protect cables, it is a part of the protection against electric shock too.