Getting Started


Welcome to Acme Electric’s frequently asked questions page.

I am sure you have a few questions on how to get started, so lets get you started…there are multiple ways to browse this site:

  1. Search Box: This is going to be the quickest way to locate exactly what you are looking for, type a few key words and select the FAQ that best matches your inquiry.
  2. Recent Posts: This the most recent questions to be answered.
  3. Categories: This will allow you to browse based on a general subject, and see all of the FAQ’s relevant to that topic.

If those three fail, shoot us your question and we will work to get it answered and added to our growing knowledge database.

Have a question about a specific product, or want to place an order with Acme, there are various ways to contact us!


To eliminate the problem of overheated neutral conductors, why not increase the size of the neutral?

First, increasing the neutral size does not eliminate the harmonic problem – they are still present in the system and may cause transformer overheating and possibly failure.

Second, installation of a new neutral conductor in long runs may be difficult and cost prohibitive when compared to the cost of installing an I-Trap™ unit.

What causes a neutral current to flow in a balanced three phase system?

The vector addition of three phase fundamental currents will add to zero on a balanced system without harmonics. However, if triplen* harmonic currents are present, they will add in the neutral.
With high concentrations of non-linear loads, the neutral current can be as high as two times the line current.

* Harmonics which are odd multiples of three (3rd, 9th, 15th, 21st, etc.). Odd triplen harmonics add together in the neutral conductor