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May 21, 2012

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Comments

Jak Mang

Voltage drop can be caused by increased resistance somewhere. Got any warm or hot wires between the batteries and point where you see 8 volts?

Adam Turinas

Don't know Jak but that's good suggestion

tillerman

Thank you for yet another post in your series "Making Tillerman Super Happy That He Owns a Laser." I may have to write a post myself one day with links to all of your posts in this series.

Sorry to be so mean. Hope you find the leak soon.

Adam Turinas

TMan, hope you get a leak!

Kidding. It's all in good fun

o docker

One of the most obvious sources of trouble - but not mentioned in your list - is the connection of the power cables at the battery.

They can look tight and clean on the outside, but still be faulty where it matters. The drill is to remove the cables from the batteries, clean well on all contact surfaces with sandpaper or such, and then make nice and tight again.

Liberal applications of beer can help, but only after you've finished screwing around with the cables.

Adam Turinas

Thanks ODock. I topped up the batteries with beer. That shoudl be OK, right?

Baydog

After reviewing the updated points, I'm convinced that the beer will ultimately be the most important factor. But I'm surprised that the inhabitant from Dock O doesn't use beer from bottle, but rather from can.

Baydog

And I've been trying to analyze these Typepad profile images. Are they all from the same Mother image, taken from different distances from the nucleus, with different colors for different commenters? You can tell me to shut up at any time.

tillerman

Yachties do it in shorts.

Yachties do it with a leak.

Yachties do it with a flicker.

Yachties do it with poor connections.

Yachties do it with lots of other people helping.

S/V Osprey

The battery connection suggestion is a really good one, except that you're seeing the problem when the engine is running. If the alternator is turning, depending on the actual wiring, that seems unlikely.

There are two ways I could see this happening. First, something related to a poor connection, whereby the wiring can't handle the load. E.g. the battery connector issue. I'd look at the main switch and the connections to the panel. That's the scariest occasion as it may lead to a fire.

The second thought I had was significant load. It's possible to have a wire ground itself, take on significant load and draw the voltage down. That seemed likely when I saw this post, but the more I contemplate it, I would go with the first item. Unless something isn't fused (new bilge pump?), a breaker or fuse should prevent that.

If you haven't already dropped it with your local sparky, I would have someone watch the panel voltage while you jiggle the positive leads, one by one, from the battery to the panel. I would bet a frosty cold beverage that is your dilemma.

As a side note, we've greatly enjoyed your blog. My fiancee is a great devotee and keeps me abreast of the latest. Should you find your way across Raritan to AHYC, the aforementioned beverage is on us.

Adam Turinas

TMan, I am making up Tshirts

Osprey: You are too kind. Will ping you next time I am heading to AH.

Electricians in Bolton

Practical applications and advances in such fields created an increasing need for standardized units of measure; it led to the international standardization of the units ohm, volt, ampere, coulomb, and watt.

Electrician

I am grateful for the standardization of measurements like these. Makes life easier. The metric and english systems are ever at war and I wish we'd just switch over. But at least our electricians don't have to do conversions to know how much juice is flowing in those wires.

Electricians in Perth

electrical engineer here. I actually investigated a similar problem before.Almost certainly a wiring issue, At the sub or the house

Sally Johnson

For that kind of repair who would you call? Would you take it to a specialty repair shop or get the help from an electrician in victoria bc? Good things to know. http://www.mikescountrykitchens.com/

Suzy Frame

This is a great post! I have really been looking into electricians tallahassee fl. Can you tell me where I can find more information about electricians and how they will be able to help me with all of the different electrical things?

Lance

I tried to do my own electrical work...worst thing i've ever done. I hired an electrician from hamilton and i dont know how he did it, but in a couple hours everything was all good. I dont like to mess with things i cant see that can kill me, so lets leave it up to them. Good post!

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