![]() ![]() ![]() Reading that, IMHO it sounds like the GFPE is supplied as part of the de-icing equipment, to protect the equipment only, not the feeder. It is important to understand that this required equipment protection is not the same as a GFCI used for personal protection that trips at 5 mA (± 1 mA)." These protection devices, if applied properly, will substantially reduce the risk of a fire being started by low-level electrical arcing. This required protection for fixed outdoor deicing and snow-melting equipment may be accomplished by using circuit breakers equipped with ground-fault equipment protection (GFEP) or an integral device supplied as part of the deicing or snow-melting equipment that is sensitive to leakage currents in the magnitude of 6 mA to 50 mA. This affords the manufacturer and the user an option of providing both circuit and equipment protection or just the required equipment protection. Rather than protecting the entire branch circuit, the ground-fault protection requirement is focused on protecting just the equipment itself. "Section 426.28 requires ground-fault protection of equipment for fixed outdoor electric deicing and snow-melting equipment. See NEC 517.17)ġ0.Perhaps the following commentary from the '08 NEC Handbook. Any system with Ground Fault Protection (except for Health Care Facilities. Resistance or impedance grounded systemsĩ. GE Electrical THQL2140 Q Line 40 Amp Ge Main Breaker. A 4,000A service could be split into 5 – 800A switchesħ. GE Electrical THQL1115DFP GE Circuit Breaker, Afci, Dual Function, Gfci, 15 a, 1 -Pole, 120/240 Vac, Plug Mounting. Service with six disconnects or less (NEC 230.71) where each disconnect is less than 1,000 amps. Any delta system (grounded or ungrounded)Ħ. Systems over 600-volts (high or medium voltage systems)ĥ. Any system with a disconnect less than 1000 ampsĢ. Specifically, Ground Fault Protection is NOT required for the following:ġ. These devices must also have regular maintenance including annual calibration.Īs mentioned earlier, there are some exceptions to the Ground Fault Protection rule. Improper wiring of the system, including accidental neutral return paths can easily negate the effectiveness of a Ground Fault Protection device. Also, the reliability of the GFP systems depends on many factors beyond the proper settings on the device. Ground Fault Protection systems are very sophisticated devices, often with many variable settings to “Dial-In” the specific requirements needed for your site. Does NOT provide protection from high-magnitude ground faults.Does NOT provide protection from 3-phase, phase-phase, or phase-neutral faults e 11533 designjet 11524 rv 11516 ge 11509 samsung 11508 domain 11498 yon.Does NOT protect people and equipment from ground faults like a GFCI system (Ground Fault Circuit Interrupter).Does NOT protect people from shock hazards.There are a few exceptions to this rule, but first let me explain what Ground Fault Protection is NOT. NEC Article 230.95 does indeed require that all service disconnects over 1,000-amps must have Ground Fault Protection in addition to regular overcurrent protection systems. High-magnitude faults are stopped by traditional over current protection mechanisms. These low-magnitude faults are sensed by the breaker and current flow is stopped. Ground Fault Protection Circuit Breakers use special sensors to detect low-magnitude ground faults. GFP VS GFTP GE BREAKERS CODEThe National Electrical Code (NEC) requires Ground Fault Protection for equipment in Articles 215.10, 230.95, 240.13 and 517.17. The NEC calls for use of Ground Fault Protection (GFP) type for circuit breakers for services over 1000A, does this include buildings or just equipment? ![]()
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