View Full Version : Ground fault NEC 230.95
rynomite
July 26, 2019, 01:11 PM
382
The exam has the correct answer as being false but I'm relatively certain ground fault protection is required here. I know there are exceptions to the rule, but I don't think this would meet any of them. Can anybody point out what I am missing? Thanks.
Kalbi_Rob
July 26, 2019, 02:45 PM
382
The exam has the correct answer as being false but I'm relatively certain ground fault protection is required here. I know there are exceptions to the rule, but I don't think this would meet any of them. Can anybody point out what I am missing? Thanks.
There are a few exceptions:
http://www.cooperindustries.com/content/dam/public/bussmann/Electrical/Resources/solution-center/technical_library/BUS_Ele_Tech_Lib_Ground_Fault_Protection_Requireme nts_GFP.pdf
Specifically:
"Where Ground Fault Relays are NOT Required
There are many services and feeders where 230.95, 215.10, and 240.13 do
not require ground fault protection including:
1. Continuous industrial process where a non-orderly shut down would increase
hazards.
7. Service with six disconnects or less (230.71) where each disconnect is less than
1000 amps. A 4000A service could be split into 5 - 800A switches.
9. Fire Pumps
10. For feeders where Ground Fault Protection is provided on the service (except for
Health Care Facilities. See 517.17.)"
phasor
July 28, 2019, 12:20 AM
382
The exam has the correct answer as being false but I'm relatively certain ground fault protection is required here. I know there are exceptions to the rule, but I don't think this would meet any of them. Can anybody point out what I am missing? Thanks.
It's only applicable to the service, not all breakers. Article 230 is services.
SecondGen
August 2, 2019, 01:25 PM
I know there are exceptions to the rule
Question states "all," there is your answer.
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