RE: Power over Cat5

[Keith Doxey <ukha@xxxxxxx>]

Voltage is irrelevant, its the current that is the important thing. Having
said that DONT exceed about 50V as the insulation is not rated for higher
voltages.

No problem with Krone. Telephone lines and Telex lines can be upt  80V.

Keith

-----Original Message-----
From: Mick Furlong [mailto:dorsai@xxxxxxx]
Sent: 26 July 2001 09:16
To: ukha_d@xxxxxxx
Subject: RE: [ukha_d] Power over Cat5


Keith

I thought you might be the one t  answer this!

couple of supplementary questions for Keith or anyone else kind enough t
help...

1. should the fuse value be 500ma for all three voltages (12,15,24)?
2. the max current t  draw is 350mA per cable right? If so and I want t
common all the 12V supplies t gether I will need t  fuse each cable
seperately won't I? Are there any drawbacks t  commoining the supplies like
this?
3. Any problems running this kind of voltage/current through Krone 237A
blocks?
4.Any suggestions for other useful voltages t  run through CAT5 and any
ideas
for where I could find a suitable power supply t  provide these voltages?

As you guys may have guessed I am finally taking the leap and wiring the
house (as far as I can).

I have a mailing from Nigel Orr from way back giving a lot of good advice
and
will post that and any responses I get to this question on the FAQ.

Sorry for all the questions but I am a duffer when it comes t  electronics
(just replaced my 20 year old cheapo analog multimeter with a digital one
so
that will tell you how long I have been out of electronics!).

Regards
Mick



Keith Doxey <ukha@xxxxxxx> said:

> Perfectly safe as long as you dont draw t o much current.
>
> Fit a 500mA fuse at the supply end and dont try t  draw more than
about
> 350mA.
>
> Keith
>
> -----Original Message-----
> From: Mick Furlong [mailto:dorsai@xxxxxxx]
> Sent: 25 July 2001 22:53
> To: UKHA Group
> Subject: [ukha_d] Power over Cat5
>
>
> Folks
>
> I recall a discussion a while back over the pros and cons of power
(DC)
over
> Cat5. I have looked on the archive and can't find it:(
>
> can anyone either point me in the right direction or advise me of what
you
> can/cannot do.
>
> In particular I want t  run 12V t  replace wall warts for various
items,
15v
> for my cctv cams and 24v for some sirens and other devices. Is this
> possible, safe and sensible?
>
> Thanks
> Mick
>
>
>
>
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