Ground fault protection required by NEC

[ecubed]

11. Ground fault protection is required by the NEC for all solidly grounded 480Y/277V system breakers rated 1000A or greater.
Your Answer: True
Correct Answer: False
Help: NEC Section 230.95

NEC Section 230.95 states ground fault protection of equipment shall be provided for solidly grounded wye electric services of more than 150 volts to ground but not exceeding 600 volts phase to phase for each service disconnect rated 1000 amperes or more.I believe the answer should be true according to this.

[mbaxter1]

11. Ground fault protection is required by the NEC for all solidly grounded 480Y/277V system breakers rated 1000A or greater.
Your Answer: True
Correct Answer: False
Help: NEC Section 230.95

NEC Section 230.95 states ground fault protection of equipment shall be provided for solidly grounded wye electric services of more than 150 volts to ground but not exceeding 600 volts phase to phase for each service disconnect rated 1000 amperes or more.I believe the answer should be true according to this.

Only applies to services, question says all breakers.

[ecubed]

Only applies to services, question says all breakers.

" for each service disconnect" which would include breakers and bolt-loc switches.

[Kalbi_Rob]

11. Ground fault protection is required by the NEC for all solidly grounded 480Y/277V system breakers rated 1000A or greater.
Your Answer: True
Correct Answer: False
Help: NEC Section 230.95

NEC Section 230.95 states ground fault protection of equipment shall be provided for solidly grounded wye electric services of more than 150 volts to ground but not exceeding 600 volts phase to phase for each service disconnect rated 1000 amperes or more.I believe the answer should be true according to this.

There are exemptions to 230.95:
http://www.cooperindustries.com/cont...ements_GFP.pdf

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.
2. All services or feeders where the disconnect is less than 1000 amps.
3. All 208Y/120 Volt, 3ø, 4W (wye) services or feeders.
4. All single-phase services or feeders including 240/120 Volt.
5. High or medium voltage services or feeders. (See NEC® 240.13 and 215.10 for
feeder requirements.)
6. All services or feeders on delta systems (grounded or ungrounded) such as 240
Volt, 3ø, 3W delta, or 240 Volt, 3ø, 4W delta with midpoint tap.
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.
8. Resistance or impedance grounded systems.
9. Fire Pumps
10. For feeders where Ground Fault Protection is provided on the service (except for
Health Care Facilities. See 517.17.)

[ecubed]

There are exemptions to 230.95:
http://www.cooperindustries.com/cont...ements_GFP.pdf

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.
2. All services or feeders where the disconnect is less than 1000 amps.
3. All 208Y/120 Volt, 3ø, 4W (wye) services or feeders.
4. All single-phase services or feeders including 240/120 Volt.
5. High or medium voltage services or feeders. (See NEC® 240.13 and 215.10 for
feeder requirements.)
6. All services or feeders on delta systems (grounded or ungrounded) such as 240
Volt, 3ø, 3W delta, or 240 Volt, 3ø, 4W delta with midpoint tap.
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.
8. Resistance or impedance grounded systems.
9. Fire Pumps
10. For feeders where Ground Fault Protection is provided on the service (except for
Health Care Facilities. See 517.17.)

The PDF you included is a great resource, thank you.

[clipboardwarrior]

There are exemptions to 230.95:
http://www.cooperindustries.com/cont...ements_GFP.pdf

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.
2. All services or feeders where the disconnect is less than 1000 amps.
3. All 208Y/120 Volt, 3ø, 4W (wye) services or feeders.
4. All single-phase services or feeders including 240/120 Volt.
5. High or medium voltage services or feeders. (See NEC® 240.13 and 215.10 for
feeder requirements.)
6. All services or feeders on delta systems (grounded or ungrounded) such as 240
Volt, 3ø, 3W delta, or 240 Volt, 3ø, 4W delta with midpoint tap.
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.
8. Resistance or impedance grounded systems.
9. Fire Pumps
10. For feeders where Ground Fault Protection is provided on the service (except for
Health Care Facilities. See 517.17.)

Not 100% sure how number seven applies as all disconnects would be less than 1000A?