thanks to all the folks that have been helping with the different problems I've posted! here's another one that's got me scratching my head
Single phase 120 V, 16 amp single phase load is connected to a12 AWG THHN conductor. The equipment name plate requires no more than a 3% voltage drop on the branch. What is the maximum wire length from the panel where the voltage drop will not exceed 3% (k=12.9)
Write out your VD calculation - fill in the known values, you will have to calculate what 3% is before filling that in. You should have all components of the formula except length - reorganize the equation to solve for that missing value.
I want you to try this before it gets shown to you.
[QUOTE=sclement;1851686]thanks to all the folks that have been helping with the different problems I've posted! here's another one that's got me scratching my head
Single phase 120 V, 16 amp single phase load is connected to a12 AWG THHN conductor. The equipment name plate requires no more than a 3% voltage drop on the branch. What is the maximum wire length from the panel where the voltage drop will not exceed 3% (k=12.9)[/Qequipm
The questions you are asking are generally the same questions in which you are trying to find (×) write this formula on a piece of paper. Cma=2×k×i×l÷vd. I expained to you what the letters represented in the last question. With this formula you can answer all the questions asking for (l)length,(cma) circular mil or the wire size, vd, or (i)amp. Which ever variable they are looking for needs to be isolated by itself using the the formula. Transposing is important to know because this skill will be needed in basic ohms law questions. Hope this helps.
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