Maintenance
The Ups and Downs of Technician Certification

The Ups and Downs of Technician Certification

By Kevin Roberts Certification tests can be a challenge for the emergency vehicle technician. For today, let's look at the purposes of certification testing. First, it provides an evaluation of technician knowledge and understanding. Second, it brings in a third...

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Unbalanced Loads and Voltage Drops, Part Three

Unbalanced Loads and Voltage Drops, Part Three

By Kevin Roberts Last time we left you with this diagram.       Figure 1 Our point was to introduce the practical application of unbalanced loads in a series circuit. You wouldn’t have thought it would take this many articles to do so. But the point of...

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Speaking a Common Language

Speaking a Common Language

In this article, I want to cover ways mechanics and firefighters can communicate and work together to solve apparatus problems. Most of these problems come from both sides of the conversation, with both using terms and descriptive statements that one side does not understand.

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Unbalanced Loads and Voltage Drops, Part Two

Unbalanced Loads and Voltage Drops, Part Two

At the end of the last article, I left some of you with a bit of a cliffhanger. But it was a cliffhanger only for some of you because the rest of you clearly understood all the ramifications of the principle set forth in that article.

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Unbalanced Loads and Voltage Drops, Part One

Unbalanced Loads and Voltage Drops, Part One

Today let’s consider the series circuit in which the intended loads are not balanced. In a past life, I trained for a company who had on their curriculum staff the originator of this idea. For the moment I will skip the introduction to his question, but he asked what would happen if we connected a low wattage bulb in series with a high wattage bulb.

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Voltage Drops and Amperage Flow

Voltage Drops and Amperage Flow

Today we will look at the principles behind unbalanced loads and how we can use what we learn to train our brain to think in a certain way. It is in the development of thinking skills that we can learn to recognize that odd problem that may seem as though the vehicle is playing tricks on us.

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