Nigel Calder & Jeff Cote Talk Marine Electrical - Part 2 of 11 - Grounding, ELCI, and ESD on Boats

Nigel and Jeff are together again to talk about all things marine electric! Over the next few Sundays, they will talk about a number of different topics in this 11-part interview:
Part 1 - The Basics
Part 2 - Grounding, ELCI, and ESD
Part 3 - AC Ground to DC Ground Tie
Part 4 - Galvanic Isolators
Part 5 - Isolation Transformers
Part 6 - Electric Propulsion
Part 7 - Portable Generators
Part 8 - 48V Systems
Part 9 - Lithium Batteries
Part 10 - Large Solar Arrays
Part 11 - Drop In Lithium
Bonus Track - Favourite Products & Identifying Single Point Failures on your Boat
Read more about Nigel Calder’s HowToBoat Course, boathowto.com/#aff=pysystems
Check out the PYS website for more information on ELCIs, www.pysystems.ca/products/blu...
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[@johnforeman4057]

Your conversations are invaluable for us amateur marine electricians. Many thanks for your continued passion.

[@outlaw565]

Nigel , you unknowingly influenced me to be a marine tech years ago. I got one of your electrical books. Your electric knowledge added alot more to the education i got from what I learned from marine tech school. And Jeff your a good teacher also huge Thanks to you both for unknowingly helping me along in me journey.

[@jorgeangeleri9516]

Thank so much for share all this knowledge.

[@pmnfernando]

great info as always!

[@kylecordina7159]

Thank you both. I really appreciate this content. I'm learning a lot but I have a question I'm hoping someone here can explain. I don't understand the reverse polarity circuit with an installed ELCI / RCD / GFCI breaker. Your main breaker is comparing current traveling on the hot and neutral to break the circuit. Wouldn't placing a reverse polarity led or any load between the neutral and ground put current traveling back on the ground and trip your breaker as well as any ELCI type breaker upstream on shore?

[@bethg7026]

I have a fiberglass sailboat. It has a dc system with a cranking battery and a deep cycle battery, and an ac system that runs two outlets. One of these outlets has a prosport HD battery charger. Is that charger the inverter?

[@erikalaurentz1521]

Hi Jeff,
Do I need an ELCI if we have isolation transformer?
Thanks!
Erika

[@Mark-jd1fr]

Could you explain why the non-conductive(less conductive?) fresh water is more dangerous than salt water.

[@kenchace8444]

Because a person is more conductive than fresh water so any fault current prefers to go through the person. A person is less conductive than salt water.

[@outlaw565]

My view. Because your body would be the only conductor to ground. In salt water the voltage has all that water to path to ground, you would only be a small part of that, you wouldn’t get the full voltage/ amps. Correct me if I’m wrong. A little bit of amps running through your body will make that part of your body spasm, in other words you drown cause your unable to swim. Without going though my notes i can remember it being a tiny bit of amps. Less than you would ever think. Just think getting tazer by the cops while you’re swimming. I think you get the point.

[@milkoberben2963]

Isn't about time time that we leave the old 12 volt idea of combining batteries and just have 2 batteries for the engine to be safe and have 48 volt bank for the house with maybe some DC to DC converters