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Thread: Romex for DC run

  1. #31
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    Quote Originally Posted by jaggedben View Post
    If we're talking about this sort of thing ... (thread drift)...

    Run all the loads in the house through a large gutter or j-box adjacent to the MSP. Then when I come to install a battery system with a backup loads panel, I can install a the backup panel off the gutter and easily and cleanly switch over the loads to be backed up. And then the customer can change their mind about it too, and I can come back (for more money) and change them all again.
    120 VAC has been a “standard” way longer than all the things I mentioned.

    I built my last house in 1999 when everything I mentioned was completely different than it is today. All the indications are those technologies are going to change completely in the next 10 or 20 years. My current house was built in 1962 and is reasonably serviceable, in terms of having electricity in the quantities needed, where needed. There are issues, but technology has moved in a favorable direction, the same as it has for the past 20 or 30 years — more efficient appliances, etc.

    There are some neat gadgets, but going from “stereo” to “quadraphonic” to “7.1 channel surround sound” was bigger than how many feet along how many walls. Dittos for how much network data a computer sucks down, or how many computers in a house. The trend is wireless, but “wireless” has issues, both with bandwidth and security.
    Julie in Austin

    Born to brew, forced to work ...

  2. #32
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    yes, should have been clear: no Romex outdoors ever.
    UV tears everything apart. Except PV wire.

  3. #33
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    Quote Originally Posted by tallgirl View Post
    120 VAC has been a “standard” way longer than all the things I mentioned.
    Things will be a lot more interesting when lighting circuits go to 12v or 48v DC-- LEDs don't -like- AC at 110 volts! (110.... we used to have 110....)

  4. #34
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    Quote Originally Posted by PaulMmn View Post
    Things will be a lot more interesting when lighting circuits go to 12v or 48v DC-- LEDs don't -like- AC at 110 volts! (110.... we used to have 110....)

    I believe the future of lighting will be PoE LED

  5. #35
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    Quote Originally Posted by five.five-six View Post
    I believe the future of lighting will be PoE LED
    I searched for >POE Voltage< and found: "Power over Ethernet is injected onto the cable at a voltage between 44 and 57 volts DC, and typically 48 volts is used."

    http://www.veracityglobal.com/resour...ed-part-2.aspx

    I still think that the lighting current will be more than typical ethernet cables are designed to handle.

  6. #36
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    Quote Originally Posted by PaulMmn View Post
    Things will be a lot more interesting when lighting circuits go to 12v or 48v DC-- LEDs don't -like- AC at 110 volts! (110.... we used to have 110....)
    IMHO, lighting circuits will go PoE. Then you can buy luminaries with speakers or IR temp sensors or natural light sensors or whatever built into them and automating lighting title 24 things will evolve on a scale hitherto undreamt of.....



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