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Wednesday, May 24, 2017

Monthly Archives: July 2009

The Inverter

In our top-to-bottom perspective of a PV system, we have arrived at the inverter. The utility-interactive inverter is a key element in the PV...

Transfer Equipment Used in Optional Standby Systems for Commercial Applications, Part II – Transfer...

The primary purpose of transfer equipment is to allow power transfer from a normal (Utility) source to an alternate (Generator) source while preventing the...

Energy Loss, Global Warming and Voltage Drop

Safety first. That’s been the byword for electrical codes and electrical inspectors forever — and properly so. But is that enough? For people and...

What Does the IAEI Education Committee Mean for the Members?

It is pretty well understood about the need for education in our industry, whether it is needed due to improvements in technology and installation...

House Divided

While I was teaching Article 220 and particularly Parts III and IV and Sections 220.40 and 220.80, respectively, questions were raised about the differences...

Bonding Metal Gas Piping

Many questions are being raised about the requirements for bonding metal gas piping systems. More specifically, when corrugated stainless steel tubing (CSST) is installed...

Dwelling Units — No Big Deal…Right?

The battle lines are drawn, you must choose a side! Somewhere along the way, it seems that we in the electrical industry have gotten...

Use of a “Special Permission” and “Power of Rejection”

This article covers the application of two rules of the Canadian Electrical Code that establish a unique relationship between electrical designers/contractors and electrical safety...

How to Invest During a Recession

We are now in the seventeenth month of the recession, which began in December 2007, according to the National Bureau of Economic Research. Not...

Changes — The 2009 Canadian Electrical Code

It’s here! I just received my shiny new copy of the 2009 Canadian Electrical Code and eagerly scanned it to find out what has...
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