What is a Decimal Fraction?
First, what is a decimal fraction? A decimal is a fraction that is more than ten digits long, which is why it is called a “decimal.” A decimal is made up of a numerator and a denominator, and the number after the decimal point is written as a decimal fraction. The denominator of a fraction […]
Why is Body Temperature Written in Decimals and Not Fractions?
Why is body temperature written in decimals and not fractions? The answer is based on how temperature is usually expressed. For instance, if you are buying something, it is written in decimals. That’s because it is less than a half-degree Celsius. On the other hand, if the temperature is 98.6 degrees Celsius, then it is […]
How to Tell If a Fraction Has a Repeating Decimal
If a fraction contains a repeating decimal, you can use the following steps to figure out which fraction is a repeating decimal: First, multiply the number by a power of 10 and look for the ending digit. If the number has two and five factors, the decimal point is placed to the right of the […]
Conductor Fill
If you’re running electrical wiring in your home, you need to know about conduit fill. This is the amount of space that your wires take up in the conduit, and it’s important to keep track of because you can only fill the conduit so much before it becomes a fire hazard. The NEC (National Electrical […]
Concentric Bends
Concentric bends are a set of conduit bends that have a common center point, but have different centerline radii. Figure 1 shows three concentric bends produced from 2″ rigid conduit. Conduit 1 has a centerline radius of 20″. Conduit 2 has a centerline radius of 24 3/8″. Conduit 3 has a centerline radius of 28 […]
Portable Ladders
Portable Ladders Construction Ladders shall be capable of supporting the following loads without failure: Each portable ladder: At least four times the maximum intended load, except that each extra-heavy-duty type 1A metal or plastic ladder shall sustain at least 3.3 times the maximum intended load. Ladder rungs, cleats, and steps shall be parallel, level, and […]
Center Of Bend
If you‘re an electrician, you probably already know how to find the center of a bend. But for those of us who don‘t work with conduit on a regular basis, it‘s not always so obvious. Here‘s a quick rundown of how to do it: How To Find Center of Bend Electricians often need to locate […]
Assured Grounding
When it comes to electrical safety in the workplace, one of the most important concepts is that of assured grounding. This simply means that there is a path for electricity to follow to the ground in the event of a fault. This is typically accomplished by grounding all of the electrical equipment in the area. […]
Offset Bends
Offset bends are used to move a run of conduit from one plane to another. An offset is normally used to bend the conduit around an obstruction, or to relocate the conduit close to a structural member to make it easier to fasten the conduit. Figure 2 shows an example of an offset bend. Layout. […]
Segment Bends
Sample method to bend 3-1/2″ rigid conduit around a storage tank with a diameter of 160 feet. Segment bending is a method of bending conduit by making several small bends to produce one larger bend. The method on this page illustrates a technique for bending a 3-1/2″ rigid conduit around a tank with a 160′ […]