## 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 […]

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 […]

## 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 […]

## 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′ […]

## Trig Tables

The Trigonometry Tables are a great resource for students who are struggling with trigonometry. The tables provide a quick reference for students to look up the values of various trigonometric functions. The tables can be used to help students understand the concepts of trigonometry, and they can also be used to help students solve problems. […]

## Fractional Conversion

When it comes to fractions, there are a lot of different ways to represent them. For example, a fraction can be represented as a whole number, a decimal, or a percentage. In order to convert a fraction to a different representation, you need to understand what each representation means. A whole number is a number […]

## Conduit Size

When it comes to electrical conduit, size does matter. The wrong size conduit can create problems with your electrical system, so it’s important to choose the right size for your needs. Here’s a look at what you need to know about conduit size so you can make the best choice for your home or business. […]