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Insulation Test Using Megger On Cables #86848 12/19/03 10:10 AM
Joined: Oct 2000
Posts: 2,749
Joe Tedesco Offline OP
Member
Question:

When performing an insulation test using a megger on cables in a 600 volt system, megger scale is 1000 volt dc.

Why do cable manufacturer's recommend a megger scale of 500 volt dc?


Joe Tedesco, NEC Consultant
2017 / 2014 NEC & Related Books and Study Guides
Re: Insulation Test Using Megger On Cables #86849 12/19/03 10:37 AM
Joined: Mar 2002
Posts: 582
R
Ron Offline
Member
According to NETA:
7.3.2 Cables, Low-Voltage, 600 Volt Maximum
Perform insulation-resistance test on each conductor with respect to ground and adjacent conductors. Applied potential shall be 500 volts dc for 300 volt rated cable and 1000 volts dc for 600 volt rated cable. Test duration shall be one minute.


Ron
Re: Insulation Test Using Megger On Cables #86850 12/19/03 03:58 PM
Joined: Nov 2000
Posts: 246
R
rmiell Offline
Member
Ron, what does NETA stand for? Do they have a web site?

Rick

Re: Insulation Test Using Megger On Cables #86851 01/05/04 01:05 PM
Joined: Mar 2001
Posts: 345
T
tdhorne Offline
Member
Quote
Ron, what does NETA stand for? Do they have a web site?


I hope you will forgive a wild % guess. Below is the URL of the InterNational Electrical Testing Association.
http://www.netaworld.org/
--
Tom Horne


Tom Horne

"This alternating current stuff is just a fad. It is much too dangerous for general use" Thomas Alva Edison

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