Electrical Construction & Maintenance

Stumped by the Code? Code Requirement for Sizing the Overcurrent Protection of Conductors

All questions and answers are based on the 2017 NEC. Q. What is the Code requirement for sizing the overcurrent protection of conductors? A. Except as permitted by Sec. 240.4(A) through (G), ...
Electronic Design

Resettable Overcurrent Protection Device For Li-Ion Batteries Offers Size and Cost Benefits

TYCO ELECTRONICS announced the introduction of a Metal Hybrid PPTC (MHP) technology useful for high-rate-discharge battery applications at ratings above 30VDC/30A such as cordless power tools, e-bikes ...
Electrical Construction & Maintenance

Stumped by the Code? Rules for sizing transformer secondary conductors?

Q. What are the NEC rules for sizing transformer secondary conductors? A. A set of conductors supplying single or separate loads is permitted to be connected to a transformer secondary without ...
EDN

Selecting a resettable circuit-protection device

Products using resettable fault-protection technologies such as polymeric positive temperature coefficient devices (PPTCs) can help minimize the impact that any failure has on the system, reduce the ...
Electronic Design

Selecting Fuses: Simple Procedures to Get the Right Overcurrent Protection for DC-DC Converters

Find a downloadable version of this story in pdf format at the end of the story. Although features and functionality attract the most attention for new electronic products, whether consumer, ...
EDN

ProTek Devices Intros Overcurrent Protection PPTC Thermistors

The new components include the PMPS150-1812; PMPS150E-1206; PMPS200-1812; PMPS200D-1210; PMPS260C-1812; and PMPS380E-1206. These surface mount device (SMD) PPTCs are designed for overcurrent ...