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[Music]  you  [Music]  hopefully the enthusiasm in my voice is  gonna carry this class through the  afternoon I remember when I was doing  engineering there's a profit fluid fluid  mechanics his tone was so steady that I  could go there and it was an afternoon  class and I wasn't never made in one  class without passing out asleep I  remember I did a Tim Horton's challenge  once I had 12 sugars and I told my  classmates I was like I'm gonna make it  to the end of this guy this guy was  smart I mean there's no doubt the  information was very useful and  extremely valuable I could not make in  this guy I'm Mike you can see I'm Latin  I speak with intonation the voice  dynamics are different this fellow had  his voice was steady it was perfect I  never made it to the end of one class  ever ever ever now my grade in fluids  was not great either clearly so I'm  always trying to say I'm gonna try to  keep everyone awake through the energy  of my voice all right so what we're  gonna do next is we're going to talk  about troubleshooting electrical things  on your boat as you can see the  challenge with troubleshooting  electronics is it's pretty intense  besides troubleshooting power then you  need to start being in the application  layer right like you need to go so don't  be too daunted and overwhelmed if the  electronics seemed a little bit hard it  is it's much easier to troubleshoot an  electrical system than it is the  troubleshoot an electronic system okay  so in terms of pay grades  I just find it it's a normal evolution  and it's completely separate but it gets  pretty it's like solving a computer  problem right at the end of the day it's  non-trivial like it's a skill so you can  do a certain amount of work on your own  but at that point if you can you don't  want to be too hard on yourself it's  pretty geeky right unless you live and  breathe this stuff you're not gonna be  able and then we didn't even talk about  bugs within the unit all right like I  know and my technicians like oh yeah  that bug happens when  this happens that happens of that  generation for that code hi how the hell  as an operator you're gonna know that  you're not so you're not supposed to be  completely self-reliant in  troubleshooting your own electronics  just by yourself it's just not gonna  happen it's not realistic you do the  best you can and at one point you go I  done I've done what I can I need help  and that's normal and we do the same so  conceptually yesterday we talked about  all of this and that's a typical maybe  not everyone has all of these things on  their boat  but that's pretty much what a boat DC  electrical system looks like now of  course some of us have more batteries  and you know we have 24 volt systems and  12 volts but at the end of the day it  still can be brought down to something  like this  alright so Chargers now that's a good  thing to troubleshoot right common we  all have one if you don't have one you  should have one so what are the common  things for troubleshooting a charger  well the first thing is what does a  charger do it takes power AC power and  converts it to DC the first thing you  got to figure out is does my charger  actually have power so a common thing  you're going to want to make sure is  that you're gonna want to make sure that  the breaker here right is actually on  and it's actually not probably labeled  charger it's probably labeled converter  so that's confusing in the old days  there were computers converter so I get  people that have new handoffs with boats  not their own boat an older boat they're  like I have never idea what the  converter thing was so I never turn it  on unrelated my engine batteries are  dying and I don't understand why they  don't get a charge I'm like well  actually it is sort of related you  decided and we're never told to turn on  the converter which is your battery  chargers for your engines oh but my  house gets a charge oh yeah but that's  from your inverter charger oh you mean I  have two Chargers  yeah you do you have two charges on your  boat so first thing is you got to have  AC going to the charger right an AC  remember your charger will not work if  you're not connected to shore power or  you're not having the generator run  so you even go at the beginning you're  like a your charger will only work if  either of those two sources are on if  your source selector is enabled right so  if your panel your a and this is why an  AC voltmeter is really useful in the  panel if you don't have both of the  panel don't start worrying about turning  on switches right it's all about chasing  power from the source the generator is  gonna have a literally a circuit breaker  it might have tripped press that after  that make sure this source selector and  by the way they get old and then they  fail that could be the issue so when  you're troubleshooting you're like do I  have power at my AC panel is nothing  working on my AC panel or just my  charger not working on my AC panel so  process of elimination  if only your chargers not working try to  trip that breaker  that clamp on meter would tell you you  could literally go and actually without  ever even measuring voltage you could  actually put it on a single wire not the  cable because the cable is actually  gonna see the sum and the sum is zero  because there's current going one way  and current coming back you want to be  able to catch the hot or the neutral and  you put it on around this and you could  actually see if this is getting power  the other way would actually see if also  there's lights here that would be  another one if this is actually  energized but you could have this  receive power and this is dead right so  you could use also used from Home Depot  a little wand right they can actually  measure the pulsation of current right  there about ten dollars and I actually  have it close to the AC input to the  charger if it lights up and this is not  lit up you know that there's AC coming  in and this is not lit up this is the  problem stop replace the charger right  it's pretty simple now if you have AC  coming in you have lights on the device  and your batteries are not charging then  what the problem most likely is is that  the fuses might be blown right or that  your charger is badly installed and it's  on a switch and I've seen that where  charger outputs are switched never  should be black and white and the switch  near the battery is off and you  have to have the battery switch on for  the charger to be connected to the  battery basically that's how you  troubleshoot a charger it's not that  hard but you start from the source and  you work your way down it is definitely  possible that your fuse will be blown  it's possible a lot of people will put a  40 amp fuse on a 40 amp charger thinking  that a charger is a load it is not a  load a charger is a charger it doesn't  pull current on the DC side it pushes it  so if we installed a 40 amp charger we  put a 50 amp fuse and I have gauge wire  right that can handle 50 amps it will  never get 50 amps but for safety  I'll put gauge 850 and I'll put a 50 amp  fuse for never for having nuisance  tripping you have a question oh none  like me I don't know like 2% most fuses  there's none or they're gonna put the  fuse completely in the wrong place  people think a fuses this magical device  that somehow protects all things it's  sort of the equivalent of a magic wand  you just move it around someplace and  everything around in that direction is  they don't understand the location of  the fuses important like you lock the  front door of the house not the back  door and wonder why people are inside  your house like if they can come in like  what's the point of having locking the  exit you want to stop something from  coming into your house not leaving your  house on this you could do an mr BF we  talked about there's another one that's  maxi fuse is a good one they call in  smaller sizes a maxi is a really good  one you can even put a thermal circuit  breaker I see thermals all the time they  come small but they're pretty they're  more expensive but at least they're  resettable you see those little  resettable thermal circuit breakers on  those generally they're gonna install  them right beside the charger any other  questions on chargers yes  the battery source is the real thing  with energy so the fuse is right at the  start of power the real power is from  here a battery charger will only ever  output 40 amps or 50 amps or whatever  it's rated at it's not gonna fail hi  the the eternal power is really at the  battery this has endless power  well not endless but for our sake pretty  much endless so you put the fuse as a  power supply now if you want to get  really crazy you should have it fuels on  both sides of the circuit like but I  would be so happy if people started  fusing at least the battery like I mean  I'm gonna have I have hopes yeah because  the real the real remember this wire  will never fail it's rated for 50 amps  right this will only ever get 40 where  is this short gonna be there's no  problem you're fusing this because if  this ever shorts here this source of  power here is definitely more than 50  amps your battery will is not limited to  50 amp output could do a thousand 2,000  3,000 4,000 like on a desk short kit  there is no limp well there is a limit  but it's gonna be pretty high up there  too unbelievable so the battery is what  you're worried about  yes yeah the video correct it's the  right location the question was as it  relates to the video I had a video on  fusing it's on YouTube about the  location of the fuse yes this fuse would  blow that'd be perfect  it would protect the circuit because  this know it will prevent a fire it's in  the right location it's at the beginning  of the real circuit always fuse and the  battery you should always have a few  starting from the battery down always  always always always always see me when  the inverter charger you don't need a  fuse at the beginning of the inverter  you have a fuse that the battery the  battery is what you worry about the  battery has so much power but yes the  question is why do I need two chargers  on my boat one for the star battery and  one for the house battery it's unusual a  charger is by definition most of them a  multi output charger some or single  output generally what would happen is  you have an inverter charger on your  house which is common single output  device right pulls and pushes right  pulls to create it DC pushes to create  charging and then you're like well I've  got an engine battery I'm going to  charge that you could do it through  battery combiners that we talked about  but there's implications of that you  could do through an echo charge  implications of that or you what you  might say is like oh well you know what  if I put a small small single output  charger which is maybe one hundred two  hundred dollars whenever the AC short  power is connected that engine battery  will have its own charge and that's why  you would do it in an ideal world every  battery well I didn't ideal where you  almost have a charger per battery you  would I mean why not  there's a reason cost space and time but  there's nothing wrong with it nothing  wrong with that yes question mm-hmm no  I'd be the same thing you'd have the  fuse you'd have the fuse at the battery  absolutely black and white at the  battery always the battery always the  battery remember an inverter charger can  only do I know you got a big one 150 amp  charge output the wires too op can your  batteries give more than 150 amps  and listen if you can melt the wire like  melt a wire it's definitely more than  150 amps  well it depends on the battery charger  it depends on the wire the question is  what size did you put up a fuse remember  there is no simple answer to anything  right everything is context-driven there  is no golden formula there's no lil like  cheat sheet Florida I'm charger okay  maximum output from that Chargers 40 app  there's no such thing as a 40 amp rated  wire wire is gauge 10 30 amps next size  up is gauge 850 amps okay 50 amp wire  which means gauge 8 I want a ratio of  1.25 so I do not get nuisance tripping  1.25 times 40 equals 50 amps 50 amp fuse  that's how you fuse a 40 amp charger if  you told me what's a hundred amp charger  then I do same approach but it'd be  completely different answer right  everything is I mean we got it yeah I  mean of course you can't be scared of  math right but it's it's just math it's  just just math you just calculate okay  so that's basically a charger this is  common by the way right like like people  with charging problems on boats that's  right up there like if your keep your  mind open because this is something you  have on your boat and this is important  this is how you maintain your batteries  because think about it most of the time  you have a refrigerator that's running  off your house which was just left on  connect it to your on switch  distribution continually into your house  battery and if you don't have a charger  to maintain your battery when you're off  the boat you're gonna come back and your  batteries will be dead right so there  are loads on your batteries when you're  not on board bilge pumps refrigerator  right so you want to make sure that the  charger is offsetting those loads so  before you leave the boat you should be  always checking is my voltage on my  batteries has it gone up before you look  at what your charging voltage was or  your voltage before turning the charger  on and what it is after you leave or  before you leave it's not about a value  it's about an incremental difference  because your batteries could have been  empty and your batteries could be  charging at 12 volts if they were 11  before they could only be at 12 if it's  a small charger right you can't say Oh a  charging voltage is only thirteen three  no a charging goal  is the incremental differential voltage  from where you were before right if your  batteries were dead at ten point five  don't expect your charger to bring your  batteries to fourteen point four volts  in an instant it's gonna take time to  get there how you know your Chargers  working is by looking at the difference  before I was on after was on what's the  Delta yes yeah this is why next year  it's gonna be a two-day mandatory course  very good question very good question we  answered that yesterday voltage I'll  take that aside just for the sake of the  people over here in the room but yeah  voltage is not a way to indicate is  never a way for you to make a decision  on if you should charge your batteries  or not it should be an a power meter  I'll talk about that later we'll do  offline yeah battery monitor yeah who  said that oh that's awesome  god goldstar it was but I love it I mean  Z's listening all right all right okay  so any questions on charging yeah go  ahead  I don't I don't know I'm really big on  cleanliness I don't think are still in  any level here is warranties it we don't  there is no saltwater here by the way  anything anybody who swam in the  Caribbean knows that this is not salt  water the salinity here is a joke it's a  joke  the Fraser is a monument of freshwater  coming down in this this whole bass in  here this whole Georgia thing there is  no this lonely level here is a joke you  go in the Caribbean you go swim for fun  open your eyes underwater and see what  type of grown man you are when you come  out and you're in tears okay this thing  is like as fresh as it gets okay like  they're the review I mean these  mountains and the amount of snow that's  on there in the summer and the  freshwater runoff now there's if I was  in Hawaii I'd start entertaining Florida  Panhandle oh yeah absolutely you know  totally different but over here  absolutely down don't think so no need  no need  I've never used it on my boat I don't  ever use it on people's boat  never had a problem but again it depends  on your area right and depends on your  area yeah of course I mean if you're  going to places like Hawaii people in  Hawaii have to change their ranking  every 10 years it's suicide not two  things rusting like crazy how many  people are changing their standing  ringing here on their boat every 10  years no one dielectric grease it's  there's there's implications of using  that there's implications yeah I like  maybe a spray bull shield t9 may be a  little bit better you know but it can  get messy right like it can get messy  right I like cleanliness I've got an OCD  problem it's a problem I acknowledge it  it somehow has propelled me in this  business but it is a problem and I like  cleanliness I like order and when  something's greasy and all messy and  then it catches dirt and it's all  disgusting I my mind can't let go I'm  just like I got to clean it and then I  removed the dielectric grease and then  I'm back to square one  so I just can't do it and I don't see a  need to not here question it's a  complicated question there are  implications for that question it's not  a problem it can just make the life of  your alternator a little bit complicated  but you should not start your engine  with a charger on there's reasons for  that but having solar panels connected  won't matter no matter but a charger if  I told the WYD everything honestly you  can't you can't be crazy  we need like like sleeping pills like  it'd be like like it'd be crazy but the  end result is don't have a charger on  when you start your boat there's a few  good reasons for that  but don't worry about solar don't worry  about solar any other questions on  troubleshooting or diagnosing a charger  issue on a boat