Mike Holt Enterprises Electrical News Source

Free New Resource! Mike Holt's Tool Box App

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It's always our pleasure to give back to the industry as much as we can, whenever we can. I listen to your needs, and have been working really hard for over a year on something that I feel would be of value to you all - I've developed an app for the electrical industry that is now ready for our first Beta release for those that have an iPhone or iPad. This amazing app includes six calculators with other exciting features.

This Beta version is for those devices that operate on the iOS system. As soon as we can, we’ll get a Beta release for Androids, stay tuned.To download this app to your iPhone or iPad visit www.MikeHolt.com/Beta.

In addition to the six calculators, the app gives you instant access to the following MikeHolt.com features:

Continuing Education | Exam Preparation | Free Stuff | Graphic of the Day | Instructor Resources | MikeHolt.com | Mike Holt Products | Newsletter | Question of the Day | Technical Question (post) | Visit www.MikeHolt.TV

Circuit Calculator – This app is used to size a branch circuit or feeder circuit for residential and commercial, single- and three-phase loads. Input the system voltage and the load and it will let you know the protection size, conductor size, equipment grounding conductor size, raceway size, maximum load, and maximum circuit length.

Air-Conditioning Circuit Calculator – This app is used to size a branch circuit for residential and commercial, single- and three-phase a/c loads. Input the system voltage and a/c load and it will let you know the protection size, conductor size, equipment grounding conductor size, raceway size, and maximum circuit length.

Electrical Heating Circuit Calculator – This app is used to size a branch circuit for residential and commercial, single- and three-phase heating load loads. Input the system voltage and heat load and it will let you know the protection size, conductor size, equipment grounding conductor size, raceway size, and maximum circuit length.

Motor Circuit Calculator – This app is used to size a branch circuit for residential and commercial, single- and three-phase motor loads. Input the system voltage and motor load and it will let you know the protection size, conductor size, equipment grounding conductor size, raceway size, and maximum circuit length.

Residential Service Calculator – This app is used to size the service for a dwelling unit. Input the system voltage and loads and it will let you know the protection size, conductor size, equipment grounding conductor size, and raceway size.

Transformer Calculator – This app is used to size a primary and secondary conductors and protection for single- and three-phase loads. Input the system voltage and load and it will let you know the protection size, conductor size, equipment grounding conductor size, and raceway size.

 To download this app to your iPhone or iPad, visit www.MikeHolt.com/Beta.

Note: There are two primary operating systems for Smart Phones, iOS (iPhone/iPad) and Android OS; this Beta version is for those devices that operate on the iOS system. As soon as we can, we’ll get a Beta release for Androids, stay tuned.


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Comments

  • Many thanks for the Newsletter regarding the Tool Box App. At first glance, I was excited to participate in the Beta testing of the six apps, because I´ve a good experience on this topic and I wanted to contribute with the success of these Apps, and to the expectation of the developers for a contribution to the electrical industry. Then, I looked in more detail to the description of each of the Apps. I regret to tell that I was disappointed because similar Apps have been developed since some years before. In general terms, the Apps are for very elemental cases. Following I’ll list my comments: 1. Most of the Apps relate to the calculation of a single branch circuit. The input data is limited to the voltage and the load. In a dwelling unit, what is the load of a 6kW cooking appliance?. Does the App take into account Table 220.55?. If not, then the user will have to do manually the process to determine the “load” (assuming that the user has a good experience on the NEC) in order to complete the calculation of the single branch circuit. 2. In the case of a feeder, the input data is limited to the voltage and the load. However, the “load” is the result of the sum of the associated branch circuits and the corresponding demand factors, so from where does the user know the calculated load if in the input data there is no mention of the associated branch circuits?. 3. Residential Service Calculator App: Same consideration as for a feeder calculation. Conclusion In my opinion, in general terms the Apps are applicable for very elemental cases, mostly for instructors and students. In the real word, the Apps as presented have little application for the industry. Even a very simple example (D1(a) in Annex D) cannot be addressed using the Above Apps. In my opinion, an useful software Program should address a Project in an integral manner, that is, basically it should have a module where all of the branch-circuits input data is entered. Then, the Program has a processing and a calculation module and then the result module. The calculation of the service and feeders are done by the Program based on the associated branch circuits. The only intervention of the user is in the input data. The rest is done by the Program.

    Jacob Mendelovici  January 26 2019, 4:01 am EST
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  • Installed TestFlight on my Iphone but did not receive an e-mail from TestFlight with any invitation code

    Phil  January 25 2019, 1:34 pm EST
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