# Thread: IEEE std Voltage Drop

1. Junior Member
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I got it! Thanks a lot

Originally Posted by dkidd
Definition from Article 100

Outlet. A point on the wiring system at which current is
taken to supply utilization equipment.

Don't confuse outlet with receptacle.

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Originally Posted by schicco
Julius
Just want to check again
What numbers did you use for the cos(theta) and sin(theta)
Thanks a lot

Steve
The angle theta has to be acos(0.8).I did now the same calculation on the other computer and the VD is close to yours indeed : 1.94943 accurate and 1.948536 approximate. Since I was 100 miles away I don't know what happened. I am sorry.

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Originally Posted by schicco
Julius
Just want to check again
What numbers did you use for the cos(theta) and sin(theta)
Thanks a lot

Steve
Correction to earlier post
Theta is 36.86989765
Cos(theta) is .8.
Sin(theta) is .6

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Thanks a lot

Originally Posted by Julius Right
The angle theta has to be acos(0.8).I did now the same calculation on the other computer and the VD is close to yours indeed : 1.94943 accurate and 1.948536 approximate. Since I was 100 miles away I don't know what happened. I am sorry.

5. Member
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Thanks!

Originally Posted by dkidd
Correction to earlier post
Theta is 36.86989765
Cos(theta) is .8.
Sin(theta) is .6

6. Senior Member
Join Date
Dec 2008
Posts
516
The angle theta has to be acos(0.8).I did now the same calculation on the other computer and the VD is close to yours indeed : 1.94943 accurate and 1.948536 approximate. Since I was 100 miles away I don't know what happened. I am sorry.
NEC 2014 art. 695.7 Voltage Drop. A) Starting 15% start. B) Running not more than 5% voltage drop from rated motor voltage at 115% load.

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