Transcript is auto-generated.

[Music]  you  [Music]  I wanted to talk about and I know I'm  not talking about isolation transformers  but I'm choosing to talk about something  that's more popular and easier to  install on a boat and that every single  boater should have on their boat unless  they have an isolation transformer and  that's called a galvanic isolator black  and white everyone needs to have one  everyone should have one the reason you  don't is because in the past they used  to fail open meaning that you would  actually lose the AC grounding  connection to shore power that had  serious implications for your safety and  so very few builders or even owners  would choose to actually install one of  those but nowadays because they are  failsafe they will actually allow you  that if ever it does fail it's actually  gonna fail back to a wire so worst case  you're back to what it was before which  is just a wire what it does is this an  ability to reduce stray low voltage  current on the AC grounding wire I want  you to think about when you're this  device is of no use if you're in the  middle of the ocean you're not connected  to shore power so if you never connect  to shore power you don't need this if  you're connected to shore power and  you're in a marina and you have the  perfect boat everything about it  electrically is done with the utmost  care and it is perfection you could have  a boat right beside you that is not good  the electrical is bad not intentionally  maybe there's a fault your boat that  boat are all connected via shore power  back to the dock effectively every boat  in the marina is a cell every single one  is connected to ground and their ground  is connected to water so they have a  choice if I want to go back to ground  because my neutral is bad or I'm trying  to I have uneven balance am I gonna go  through my boat or someone else's boat  to go back to shore to even things out  this device will block straight current  DC current going through an AC grounding  connection it basically effectively  isolates your boat to limit Straker and  corrosion that's happening outside of  your boat that device is around 400  bucks give or take and it's not even I  mean the physical wiring would be half  an hour to do but the question is how do  you mount it so it's really easy to  install and like I said the reason your  boat probably doesn't have one is  because they used to fail open they fail  open you're going back to the past  century I'm not talking about 20th I'm  talking 19th century for wiring so  that's why they would not install them  and you got to make sure you buy one  with either 30 amps or 50 amps right  the key here is that nothing can bypass  the galvanic isolator nothing meaning  you need to install it right after the  shore receptacle right that's the key if  anything bypasses it right it's a choke  point right it's like a gate keeper it's  like saying I don't want my kids to  leave the house well if you have four  doors in your house and you're in the  front door saying hey I'm here I'm gonna  snow buddies going out tonight and  there's three other doors well it  doesn't matter what you're doing door  one they're just gonna leave go door two  three and four so this is a choke point  the only way it works is if it catches  everything if you bypass it and I see a  lot that are badly installed it's  defeats the whole purpose it's nothing  this magically device that actually just  needs to sense what's happening it's the  only way it works is if everything has  to go through it on the AC grounding  wire okay and so what the install manual  is gonna say and what I recommend as  well is what you do so they make sure  it's not bypass is you install it right  after the shore power receptacle on your  boat right there you that way nobody's  going there there's no loads at your AC  shore power receptacle if you put it in  the panel people are gonna see a  grounding wire and then people get  creative when they see ground they're  like oh this is great and then they  start being MacGyver again  and it's gonna give you a lot of grief  and then you're gonna defeat the whole  purpose of having that on your boat  any questions on galvanic isolation ya  know the notes so are you saying can you  repeat your question again yeah this is  gonna be where the end that's not the  panel yeah the the a me the question is  where's the ammeter located as a  function of the galvanic isolator the  ammeter is first of all on the hot  conductor the black one on an AC system  potentially could be red but for most  part on most of us is black yes I know  DC negative is black hence now it's  yellow be very careful very careful one  is death the other one is ground but the  AC meter is going to be on this wire at  the panel the metering always happens at  the panel there's very very rarely a  current transformer or anything to  measure volts or amps a way AC other  than the panel everything happens at the  panel yeah question that does matter  yeah it does it does yeah and I could do  a whole presentation on galvanic like  it's full-on like that is PhD like you  go into the deep end  it's like neutron stars like oh you want  to go full-on like it's like it's crazy  like like that is a world unto itself  the books make for a heavy heavy reading  you got to be like in the zone when you  go through galvanic corrosion like it's  like it's not an electrical engineer  does not do got like it's way beyond  that like I'm a little bit but like I'm  like a little bit this works it's an  easy way to implement it's not going to  solve all your problems but for three  four hundred dollars this is gonna solve  a lot of them so it's a low-hanging  fruit to put on your boat any other  questions on galvanic Isolators  yeah it's still gonna go but it doesn't  do the DC so it's top AC goes through DC  dad correct does only blocks DC current