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Old 14-06-2013, 16:13   #1
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" Direct One Piece Cables" What Does That Mean?

Direct One Piece Cables.
Is that the opposite of say 10/2 wireing? (10 gauge 2-wire)

I need to change the wire on my Danfoss BD35F compressor to 10 gauge and am not sure of what they are referring to in the below attachment.
Am I not to use 10/2 wire?

And while we are at it. Are there any applications where 2 wires combined in a single insulated wire not to be used?
Compressors are meant to be "voltage sensitive".
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Old 14-06-2013, 16:43   #2
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Re: " Direct One Piece Cables" What Does That Mean?

I believe they are specifying a cable with no intermediate connections, junctions, etc. There should be no reason why you couldn't use a duplex cable.

For that matter, I don't understand why they should care about a cable with properly done in-line connections. I suppose they are trying to prevent someone from using wire-nuts or something equally stupid.
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Old 14-06-2013, 17:00   #3
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Re: " Direct One Piece Cables" What Does That Mean?

Quote:
Originally Posted by Paul Elliott View Post
I believe they are specifying a cable with no intermediate connections, junctions, etc. There should be no reason why you couldn't use a duplex cable.

For that matter, I don't understand why they should care about a cable with properly done in-line connections. I suppose they are trying to prevent someone from using wire-nuts or something equally stupid.
Paul,
Thanks.
I thought maybe because compressors are said to be voltage sensitive that they didn't recommend duplex wire as the voltage would get disrupted/disturbed.
Please don't laugh at me
I'm clueless.
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Old 14-06-2013, 19:17   #4
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Re: " Direct One Piece Cables" What Does That Mean?

Units that intermittently draw high current (such as a windlass or your compressor) are best wired directly to a battery bank, with an appropriately-sized breaker or fuse close to the battery. This is because if you fed them through a breaker on your DC panel, the current surge and transients from the heavy load are more likely to disturb electronics like your instruments, and also because the fewer connections you have in a high-current path, the fewer the points of potential failure.

There's no reason you cannot use 10-2 duplex wire of the appropriate gauge to feed the compressor.

Quote:
Originally Posted by Paul Elliot
For that matter, I don't understand why they should care about a cable with properly done in-line connections.
Every connection is theoretically a point of failure. Connections are subject to the quality of materials used, the workmanship, and the effects of corrosion. Most electrical codes don't permit any connections in places where they cannot be inspected, and I try to follow that goal in boat wiring as well. The higher the current, the greater the risk posed by bad connections.
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Old 14-06-2013, 20:06   #5
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Re: " Direct One Piece Cables" What Does That Mean?

Thanks lake effect.
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