Hi Paul,
I missed the bit about the mains & data sharing the same conduit. This is
against regs. and you should get the installer to make good. There is a
recommended minimum distance for mains & data running in a parallel course,
even in separate conduits and they should not run in the same conduit. Tis
Friday and I cant remember the details. Note that 3 part trunking should be
screened, but little that is installed today is because users get away with
it working!
Same thing goes for avoiding fluorescent lamps, give a wide birth - I think
that's 0.5m.. Crossing mains at 90deg is okay but looks bad (hey, lets keep
those walls neat!)
The problem is that there's a lot of 'professional installers' out there
that would be better suited to house bashing and have learned their trade
from a mate, having never read the CAT5 regs let alone the electrical regs.
If you have induced voltages on the cat5 then the UPS will not help, you
could try surge protectors on the CAT5 but you'd do better to get the
cabling sorted first. If the manufactures send a rep to your site they'll be
looking for any 'let-out' rather than admit fault.
As Mark says, it's okay to mix lo voltages in the same conduit. including
telephones that can have 120V on the ringer! although 50V is more common on
conventional switches - rambling now!
Not sure how much this helps
Have a good weekend
Adrian
----- Original Message -----
From: Paul Taylor
===== Original Message From "adrian.wells"
===== Hi Paul, This does sound strange!
I know that d-link are cheap but... (I'd recommend Lantech MaxSwitches - easy after the event.)
Are the units doing a full reset. i.e they go through a POST or are they resetting the tables only?
I think it is the power cables as I just had a look (see the message to Mark) and tere are power cables all over the data cables.
Do all of the units reset at the same time?
I assume that you are happy with the mains supply. Have you tried fitting a UPS to filler out staffroom kettles etc. :-)
There are no UPS at present which could well solve a lot of it.
Another big problem in school is the need to have everything up at the same time, but have you tried connecting one segment at a time.
Sorry, but all obvious stuff really :-(
Adrian
Thanks Adrian,