Nec 210-19. Fpn 4

Status
Not open for further replies.
W

wptski

Senior Member
Location
Warren, MI
Just got a Ideal 61-165 tester. It will measure the voltage drop on a branch circuit by applying a 12, 15 or 20A load and also show the voltage at that time. The manual refers to the NEC 210-19. FPN 4 which it says states no more than a 5% VD at the farest receptacle from the breaker/fuse box. It also mentions no lower than 108V too. At what current load are they refering to? I've already seen greater than 5% but it was above 108V a few times, so I'm confused!
 
It was mentioned in the Ideal manual and in one or two articles I found on the net. I believe that one was a ECM article. I don't have any NEC for reference, that's why I'm asking.
 
Note that FPN's are not code, they are only include for suggestions, recommendations, and information purposes.

Roger
 
Dennis Alwon said:
If you behave yourself I will let you read the online version of the 2005 code but promise me you won't rip out any pages.:grin:

http://www.nfpa.org/freecodes/free_access_agreement.asp?id=7005SB&cookie_test=1
Click to expand...
Dennis:

Somebody, maybe you posted that link or one like it before. It worked one time and never again. I press "I agree" and it goes right back to it again. I've tried deleting cookies from nfpa.org but it still goes in circles for me!:mad:
 
wptski said:
Dennis:

Somebody, maybe you posted that link or one like it before. It worked one time and never again. I press "I agree" and it goes right back to it again. I've tried deleting cookies from nfpa.org but it still goes in circles for me!:mad:
Click to expand...

Are you using internet explorer or firefox for the browser. I am having no trouble with IE.
 
roger said:
Note that FPN's are not code, they are only include for suggestions, recommendations, and information purposes.

Roger
Click to expand...

What do you make of this:
5:23-3.16 ELECTRICAL SUBCODE

(a)(2)(i). Codes and standards referenced in the Fine Print Notes (FPNs) of the electrical subcode (NEC 2005) shall be considered adopted by reference to the extent prescribed by each related section. These codes and standards also are printed in DCA Bulletin #06-2, which contains a list of adopted codes and standards that are applicable to the enforcement of the electrical subcode.
Click to expand...

This is for NJ - have no idea where the OP is located though :-? .

FPN's code or not?
Code Alert: New Jersey, 05 May 2006
 
I bet the 108 volts, although not NEC, comes from the utility dropping 5% and the customer dropping 5%. 10% drop from 120 volts nominal will give 108 volts. It isn't code, but if you subscribe to the 5% idea, you shouldn't drop below 108 volts on a 120 volt base.

Jim T
 
The way the Ideal manual is worded, they state that the NEC is for 5% VD and it shouldn't go below 108V for reliable operation. So, I really misread it!
 
jtester said:
I bet the 108 volts, although not NEC, comes from the utility dropping 5% and the customer dropping 5%. 10% drop from 120 volts nominal will give 108 volts. It isn't code, but if you subscribe to the 5% idea, you shouldn't drop below 108 volts on a 120 volt base.

Jim T
Click to expand...

I recall something about the VD on utility end being max of 3% ...at customer end 5%...total 8%.
 
celtic said:
I recall something about the VD on utility end being max of 3% ...at customer end 5%...total 8%.
Click to expand...

ANSI C84, I believe it's the voltage standard, allows 5% on the utility side as well. This may not be applicable to all utilities, local jurisdictions apply, but with all I've worked with and for, 5% is their maximum also.

Jim T
 
In Illinois the state commerce commission sets the minimum at 113 and maximum at 127.
Allowable voltage variations. For service rendered at the standard service voltage, voltage variations as measured at any customer's point of delivery shall not exceed a maximum of 127 volts nor fall below a minimum of 113 volts for periods longer than two minutes in each instance. For service rendered at voltages other than the standard voltage value, voltage variations as measured at any customer's point of delivery shall not exceed 10% above or below the service voltage for a longer period than two minutes in each instance.
Click to expand...
 
Status
Not open for further replies.
Top