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hi this is Jeff Cote with Pacific John  systems we have your attention yet today  we're going to be discussing ways to  reduce the risk of electrical fire under  an pew is when we prioritize client  projects safety is always at the top of  our list and one of the main areas of  safety that we focus on is limiting the  risk of fire aboard boats preventing  fire aboard a boat is imperative because  unlike a house a boat is typically hard  to run away from and as significantly  less escape routes it's interesting to  note that boat fires are commonly caused  by electrical issues such as measured  for DC system a shark occurs whenever a  positive or negative wire touch without  any real resistance to consequently  unlimited current flows through the wire  which easily exceeds the amount the wire  can carry the result are really hot wire  what I like to call hottest mackerel  which has a potential to ignite anything  nearby on fire in this demo we have a  properly fused circuit the fuse is  placed at the source of the power when  shorten the wire downstream the fuse is  protected  in this demo we have an improperly fused  circuit even though we have a fuse it's  located far away from the source of  power when the wire is shorted before  the fuse the fuse serves no purpose and  the wire will get extremely hard  in our home incoming AC electrical  currents have circuit breakers which  protect the wire in case of a short in  both circuit breakers or fuses serve the  same purpose therefore every circuit the  AC or DC should be properly fused the  placement of the fuse is really  important because it only protects the  wire downstream of where it's located  and therefore F you should always be  placed at or very near the source of  power in this demo we have a correctly  fused circuit each wire both large and  small has an appropriately sized fuse in  the event of a short downstream of the  fuses the smallest fuse will blow and  protect the wires  in this demo we have an improperly fused  circuit only the large wires fuse when a  shirt occurs on the small wire it is  left unprotected by the large fuse and  will become extreme  WIC has specific regulations on the  fusing of AC and DC Circuit's however  some voters lack the understanding of  these principles and regulations and  sometimes making proper installations on  their votes we estimate that a hundred  times to one electrical problems aborted  votes are caused by doing yourself  owners rather than the manufacturers  while this poses a question how do you  know if the electrical system on nervo  is properly fused in our opinion and  firm experience if the wiring is messy  it's typically an indication that your  electrical system should be further look  if you don't know what to look for give  us a call and talk to our team about the  right fusing for your both electrical  system thanks for watching and enjoy  your time out on the water  English (auto-generated)