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 ...
Electrical Construction & Maintenance

Stumped by the Code? Sizing Overcurrent Protection for Conductors

Q. What are the Code rules for sizing overcurrent protection for conductors? A. Except as permitted by (A) through (G), conductors must be protected against overcurrent in accordance with their ...
pv magazine International

Sizing fuses to protect BESS power circuit from overcurrents

Electrical overcurrents can not only damage systems, but also cause costly downtime. Fuses are said to be a great way to protect a battery energy storage system (BESS) simply and cost-effectively. In ...
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 ...
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 ...
T&D

Negative Phase Sequence Current Protection: The Key to Load Independent Current Protection

For modern distribution protection, Negative Phase Sequence (NPS) Protection is often relegated in favor of common elements such as Overcurrent (OC) or Earth Fault (EF), but NPS is an incredibly ...