HCBBS Forum (English)
Submit Chemical Projects / Find Solutions
Amplify Your Requirements on a Broader Chemical Platform *Engineering · Technology · Equipment · Solutions*
Submit Request

【Daily Question】Production, Storage, and Transportation Exchange - 9.21

2019-09-21View Original

Thread Content

This post was last edited by Yu Qin on 2019-10-7 at 11:41. It’s part of the Daily Question section in the Production, Storage, and Transportation forum; answering it correctly earns 3 wealth points; Effective participation grants 1 unit of wealth ; A special bonus will be given to the first person who provides a correct answer. In a three-phase three-wire system with an ungrounded neutral point, grounding the metal casing of electrical equipment is referred to as ( ). A. Dual protection ; B. Protective grounding ; C. Protective zero connection. B

Submit a Project

**Looking for Chemical Technology, Equipment & Solutions?** No Registration Required Broader Platform Exposure | Global Chemical Service Provider Connections

Submit Request — Free Consultation

Disclaimer

This is an automated machine translation of the original thread. Some technical terms may have inaccuracies; the original text shall prevail. Click "View Original" at the top right to access the source page, which supports IP-based automatic real-time language translation. Please watch out for contact details and sales inducements to prevent fraud. All content and translations are for reference only, representing solely the poster's personal views. For enquiries, email service@hcbbs.com.