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Go Back   SailNet Community > On Board > Gear & Maintenance
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  #21  
Old 06-24-2008
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Also visit Lighting places, Home Depot's etc... most of their lighting if uses halogen or led, can easily be retro-fitted to a DC system quite easily. Usually the only change is the bulb. I have a selection of them I have been testing out, mainly because I hate the marine decor look to stuff you find in chandelieries. Sometimes, you also have to be a bit creative with mounting as well - but point is you are not really limited, and 12-30 bucks at Home Depot, a <$10 LED bulb, and a few hours to make it fit... can sometimes be even more a reward...
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  #22  
Old 06-24-2008
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Bushrat-
" I was thinking of just pulling the breaker and making the switch there."
You'd be laying a landmine for yourself. At some future date, you or someone else will assume that breaker, like all the other breakers, is in a positive line. ZZZT! in a shower of sparks wondering "Gee, how'd that happen?!" you'd remember it was the line you reversed.

Nah, this is not the place to make shortcuts. Unless those wiring runs were made with zip cord, they should be color coded for polarity, better to find the mistake and fix it.
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  #23  
Old 06-24-2008
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Is it me or no one recycles anything anymore... Teak accesories at discount marine stores have many recyclable surfaces... Buy a couple for 10bucks...
How much of a radio disturbance 0.1 amps is going to be comparing to 1-2 amp range standard light bulbs?
It doesn't have to be all teak btw, a decent solid wood from homedepot is like 10 bucks and enought to make 10 fittings... Good staining, some urethane, all set...
But of course, getting creative is something and buying and installing is another... They both have their ups and downs...
At least don't stop people creating alternative solutions for the problems on hand...
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  #24  
Old 06-25-2008
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Also, if the light fixture shorts to a different ground, power would continue to feed it and probably burn your boat down to the waterline.
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Originally Posted by hellosailor View Post
Bushrat-
" I was thinking of just pulling the breaker and making the switch there."
You'd be laying a landmine for yourself. At some future date, you or someone else will assume that breaker, like all the other breakers, is in a positive line. ZZZT! in a shower of sparks wondering "Gee, how'd that happen?!" you'd remember it was the line you reversed.

Nah, this is not the place to make shortcuts. Unless those wiring runs were made with zip cord, they should be color coded for polarity, better to find the mistake and fix it.
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  #25  
Old 06-25-2008
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Also, if the light fixture shorts to a different ground, power would continue to feed it and probably burn your boat down to the waterline.
How many grounds does anything have? 1... i do believe..and most fixtures are polarity independent.. if op install nothing but what he states... yeah it is simpler... but should be done at the light source..
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  #26  
Old 06-25-2008
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I'm saying, if by some accident, the light fixture circuit grounds through another circuit, say someone is screwing something into the bulkhead and the screw pierces the wiring... the breaker wouldn't be on the positive line..so you'd have an unlimited current—at least until the wire heated up and burned the boat to the ground.
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How many grounds does anything have? 1... i do believe..and most fixtures are polarity independent.. if op install nothing but what he states... yeah it is simpler... but should be done at the light source..
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  #27  
Old 06-25-2008
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Quote:
Originally Posted by sailingdog View Post
I'm saying, if by some accident, the light fixture circuit grounds through another circuit, say someone is screwing something into the bulkhead and the screw pierces the wiring... the breaker wouldn't be on the positive line..so you'd have an unlimited current—at least until the wire heated up and burned the boat to the ground.
What I am saying - even if he doesn't document and someone does it - likely hood of a fire is not as much as what every one wants to scream out.. as it will trip the breaker, removing the source... but he should do it properly at the light source but if all lights on the circuit have to be reversed at minimum he should label it at the appropriate place(s)..
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  #28  
Old 06-25-2008
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Jody-

He's talking about putting the breaker on the negative wire... not the positive... at least that was the way I read it. There will be no breaker to trip in the scenario I mention, since he'll be using a different ground, one that doesn't have a breaker on it...and the positive line doesn't either.

Quote:
Originally Posted by artbyjody View Post
What I am saying - even if he doesn't document and someone does it - likely hood of a fire is not as much as what every one wants to scream out.. as it will trip the breaker, removing the source... but he should do it properly at the light source but if all lights on the circuit have to be reversed at minimum he should label it at the appropriate place(s)..
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You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
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  #29  
Old 06-25-2008
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Quote:
Originally Posted by sailingdog View Post
Jody-

He's talking about putting the breaker on the negative wire... not the positive... at least that was the way I read it. There will be no breaker to trip in the scenario I mention, since he'll be using a different ground, one that doesn't have a breaker on it...and the positive line doesn't either.
The way I read it he was just going to reverse the two... so red is black and black is red..
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  #30  
Old 06-25-2008
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Art, that's what I had in mind. Leave the positive breaker, just switch the polarity going to the cabin light circuit
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