A portable GFCI compares the amount of current in the hot or ungrounded conductor with the amount of current in the common or grounded conductor and immediately breaks the circuit if a difference greater than 5 mA exists.
{"Image DocumentName": "A portable GFCI compares the amount of current in the hot or ungrounded conductor with the amount of current in the common or grounded conductor and immediately breaks the circuit if a difference greater than 5 mA exists.", "Image ImageDescription": "Per OSHA 29 CFR , Wiring Design and Pro-tection, all electric corded tools, equipment, or devices must use either ground fault circuit interrupter (GFCI) outlets or acceptable means of grounding to ensure worker safety. A GFCI protects against electrical shock by detecting an imbalance of current in the normal conductor pathway and then quickly opening the circuit (in as little as 1/40 of a second). The most common type of GFCI outlet used on a job site is a portable GFCI. See Figure Portable GFCIs should be inspected and tested before each use. GFCIs have a built-in test circuit to ensure that the ground fault protection is operational.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}