Stainless steel washers in electrical circuits

CYQK

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Sep 11, 2009
592
beneteau first 42 kenora
Perhaps they supply fasteners that is 304 stainless or 18.8 ss stuff is magnetic
So is 304 or 18.8 a sufficent conductor??
 
Sep 20, 2006
2,952
Hunter 33 Georgian Bay, Ontario, Canada
thks understand where they should not be used...thats an understood and common practise..
Installing cables directly onto the battery post has always been intuitive and the washers on top to separate from the nut. What I've not really paid attention to was stacking smaller ring terminals from echo charger etc. and installations on bus bars, circuit breakers, i.e. for anchor windlass, etc. and making sure everything was below the washer.
 
Jan 19, 2010
1,271
Catalina 34 Casco Bay
A few years ago on a different boat I suffered a starter failure.. No big deal, just needed to be rebuilt.. Freeing the starter from the bell housing was a bit tricky.. The bolts were well rusted. Long story short, the starter was removed, fixed and re-installed. Thought I'd be smart and beat the rust issue by using stainless steel bolts.. Got everything in place, wired up and ready to try it out... Hit the starter button..... nothing.....again...nothing....hmmmm, could it be? The rebuilder happened to give me 2 new mounting bolts.. You guessed it... exchanged the bolts and no problem,,, fired right up.. a QED moment for me..
 
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Mar 20, 2015
3,199
C&C 30 Mk1 Winnipeg
The owner got mad at me when I removed them the first time. When I removed them again and then put a note that the SS washers were causing the problem the guy got really mad at me and said I had no clue what I was doing, the washers were preventing corrosion and not the problem.
This is one reason why I am glad I currently don't often deal with the public. If they know better than the professional techs in the back, then why are we fixing their vehicle ? Firing customers is sometimes the correct choice, and businesses shouldn't be afraid to do it.
 
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dLj

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Mar 23, 2017
4,220
Belliure 41 Back in the Chesapeake
This is one reason why I am glad I currently don't often deal with the public. If they know better than the professional techs in the back, then why are we fixing their vehicle ? Firing customers is sometimes the correct choice, and businesses shouldn't be afraid to do it.
I used to work with a guy that would put certain customers "in the dog house". Those were problem customers and if they came back to try to get work from us, the answer was - "You pay 100% up front now, and I'll think about when I'll start the work".... With shocked looks on their faces, of "How could you possibly..." The boss would just smile and tell they they were in his dog house - no other option....

dj
 
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Jan 7, 2011
5,448
Oday 322 East Chicago, IN
I used to work with a guy that would put certain customers "in the dog house". Those were problem customers and if they came back to try to get work from us, the answer was - "You pay 100% up front now, and I'll think about when I'll start the work".... With shocked looks on their faces, of "How could you possibly..." The boss would just smile and tell they they were in his dog house - no other option....

dj
Not all business is good business.

Never easy to fire a customer, but some times you need to “strategically disengage”.

Greg
 
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dLj

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Mar 23, 2017
4,220
Belliure 41 Back in the Chesapeake
Not all business is good business.

Never easy to fire a customer, but some times you need to “strategically disengage”.

Greg
I believe it was Steve Jobs who said something to the effect that some of his best decisions were knowing when to say no....

dj
 
Mar 26, 2011
3,670
Corsair F-24 MK I Deale, MD
Perhaps they supply fasteners that is 304 stainless or 18.8 ss stuff is magnetic
So is 304 or 18.8 a sufficent conductor??
304 and 316 are both 18-8 stainless steels. The difference is the amount of moly.

No, all 300-series stainless are a poor conductors.
 

dLj

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Mar 23, 2017
4,220
Belliure 41 Back in the Chesapeake
304 and 316 are both 18-8 stainless steels. The difference is the amount of moly.

No, all 300-series stainless are a poor conductors.
18-8 is not an alloy, It is a marketing term. It was invented by the fastener industry in order to be able to use 303, a free machining austenitic stainless steel. Using the term 18-8 allows a manufacturer to use a series of alloys falling within an umbrella of a number alloys. 316 is not within those that can be considered one of those alloys that fall within the 18-8 umbrella as the nickel content of 316 falls 10% to 14%. The 18 is related to Cr and 8 is related to Ni.

dj
 
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