Scaffold Resource uses products chosen specifically to meet the unique requirements of each job. When dealing with a structure as historic and noteworthy as the Mid-Hudson Bridge, Scaffold Resource made sure to protect the bridge itself as well as the travelers below.
GFCI (ground-fault circuit-interrupter) protection is required for many receptacles (outlets) throughout the house and outdoors. This protection can be provided either by a GFCI breaker or GFCI receptacles. There are advantages and disadvantages to each approach, depending on the installation.
The definition in Article 100 of the 2014 NEC for a GFCI is as follows: A device that is intended for the protection of personnel and functions to de-energize a circuit or a portion of the circuit within an established period of time when a current to ground exceeds the values established for a Class A device.