I see the point from the designers view. However, the majority of electrical equipment is intended to be utilized in a 120/240 volt system. For instance, if a 230 volt rated motor is installed in a 120/208 volt system, it will likely work for a short period of time but not as long as if it would...
Rbulsara and Davidbeach thank you for the response.
So how is it more economical?......Can you also expand on the following:
1. 120/208 v 4w 3p can be utilized as the main riser??....
2. Main source??
3. $/kw - installation cost and even space??
I would really appreciate if a more detail...
We are looking for a transition splice for 3/c PILC to 3-1/c polymeric(XLPE) primary underground cables. The 350 PILC CABLE has conductors of a compact sector shape. We are not sure on how to calculate the PILC insulation diameter for each of the copper conductor since they are not round...
Does anyone know how to calculate the ampacity of a rectangular copper bar. Please see the attached drawing for details. Please note that the cupper bar is going to be utilized as a terminal point for conductors up to 600 volts. The terminations will have two hole lugs as as shown on the...
The intent of utilizing the above mentioned electrical voltage/current generator is to generate a voltage/current source with a multitude of harmonic components to test digital meters(based on standard IEC 62053-21). However, It doesn't appear that such voltage generator has the ability to do...
Does anyone have a clue on how to generate a 5th and other harmonic currents with the above mentioned current generator? The user's manuals and technical support have not been of great help. The intent is to generate the 5th and other harmonic currents to test how a given power meter performs in...
Can anyone provide feed back on why the NEC and NECS utilize the word "DUCT' and "CONDUIT" differently? It appears to be a contradiction on how such word is being utilized..... please advise
I indicated above that the meter socket(to metered power) is to be utilized to electrically feed a rectifier unit(for a corrosion protection system, no buildings involved). The question is should the conductors from the service drop point to the service conductors shall be protected as mandated...
It is my understanding that overhead service conductors shall be protected against physical damage as per 230.50 A according to 230.50 B. Recently, an electrician installed overhead service conductors from the service drop conductors to a meter socket on a pole. The overhead service conductors...
Sorry for not providing feed back on my original question. However, I have been doing some research on this subject matter. I just recently was able to get a hold of the international building code material. Thank you for every once's response.
It is clear as mud. Do any of you guys know of any other issues which I should considered besides the disimmilar metal issue. How about the water flowing into the terminations of the underground secondary aluminum cables on the transformer lugs? Will water( expand) in the cables and damage the...
Does anyone know why aluminum underground secondary cables have to be terminated on the secondary terminals of an overhead transformers with a spike connector? On the other hand,Copper underground secondary cables can just be terminated bare on the transformer secondary terminals without any...
I am attaching a drawing of the type of shaft that will be utilized to bring electrical power, within a high rise building, from the electric utility's vault (located outside in the street underground.) The shaft on the drawing can be visualized by the heavy weight of the lines on the drawing...
A high rise building(condominiums) composed of more than three levels is to be electrically fed by an electric utility. There will be transformer vaults in some of the floor levels. They will be connected by concrete encased vertical raceways. I would like to know what is the minimum Fire Rating...