Edison-base fuseholders shall be used only if they are made to accept _____ fuses by the use of adapters.
c) heavy-duty base
d) Type S
See answer and applicable Code reference
The correct answer is: d) Type S
Article 240 provides the general requirements for overcurrent protection and overcurrent protective devices operating at 600V or less. Part V of this Article focuses on plug fuses, fuseholders and adapters. As specifically noted in Sec. 240.52, "Fuseholders of the Edison-base type shall be installed only where they are made to accept Type S fuses by the use of adapters."