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• ## Current in Voltage drop Equation

There is a voltage drop from the panel to the final load (say motor). Generally, the full load ampere is determined by using the rated voltage. If the...

• ## NEC Voltage Drop Calcs & Power Factor

Been putting together a voltage drop calculation spreadsheet based on the NEC tables and noticed something surprising. I though that the voltage drop...

• ## Electrical Acceptance Test Plan

My employer has an electrical acceptance test plan that measures the voltages at the panelboard, transformer, and furthest outlet to verify that the voltage...

• ## Voltage Drop With A Twist

I have a unique question. In the field we are so use to saying single phase 208 or single phase 240. The issue I'm having is with single phase 208V. I...

• ## Voltage Drop Calculation with frequency converter

Hi all,

I have inherited this project and when I look at the voltage drop calculations I see that the formula is always reset when there...

• ## Voltage Drop: Single Phase (L-L) Loads on wye

I have single phase 208 Volt lights staggered phase to phase at varying distances.
For example:
Light 1 phase A-C
Light 2 phase B-C...

• ## 320' from array to house AC or DC

I'm trying to design a system that includes an array that is approximately 320' from the customer's house.
I was originally thinking about having...

Dears,

I am involved in a Load Flow analysis with ETAP; for that purpose I have included in the model the transformers, switchgear, static...

• ## Upsizing Equipment Ground for Voltage Drop

I am looking at upsizing my AC conductors coming out of my inverter from a #6 to a #4. 250.122(B) says I need to increase the EGC size proportionally...

• ## Voltage drop

I'm a bit hung up on a question , I need some guidance as to where & how I can solve it.

The voltage drop percentage for a panel feeder...

• ## Voltage drop - chapter 9 tables & effective Z

Hi,

I'm struggling to understand why the effective Z of conductors, which is used to calculate voltage drop, changes with respect to the...

• ## 3 phase Voltage Drop square root 3 factor !?

I understand the concept of voltage drop but I am worried about the sqrt 3 factor. To get voltage drop you have to know the current. In a 3 phase system...

• ## EMT as EGC for large feeders

What do people think of using EMT as the only EGC on large feeders for 480V systems? It's permitted by code, but when are people comfortable that it...

• ## Voltage Drop Clac on Light Poles

I am trying to calculate the VD on a string of light poles.

Do I calculate the VD at each pole by using the current at each pole and the...

• ## Quick voltage drop Q

Hi. It's been a while since I've done a voltage drop calculation. I tried using a couple of online calculators but they are giving different answers and...
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