🔍 Key Concepts

• 46 CFR Subchapter T small passenger vessel electrical requirements • Design and safety purpose of switchboards on vessels • Meaning of dead-front type and enclosure requirements in marine electrical systems

💭 Think About

• Which option best protects crew from accidental contact with live electrical parts during normal operation? • On a small passenger vessel, what is the primary safety concern around the main switchboard: water entry, shock protection, or engine bonding? • Which answer sounds like a specific regulatory phrase you might see written in 46 CFR, rather than an added feature or good practice?

✅ Before You Answer

• Look up the exact wording in 46 CFR Part 183 – Electrical Systems for small passenger vessels • Confirm what a dead-front type switchboard is and why it is used on passenger vessels • Check whether regulations actually require switchboards themselves to be watertight, or if watertightness is required for other electrical components/locations instead