Is this the best install you have seen?

[dc_marsh]

I think i can match that, we had an island installed with a power bar and instead of the power and data being below desk the decided to go up over....the power sockets go right to the ceiling!...thats about 8ft, so you can imagine what it looked like when all the sockets where plugged in.

It wasn't me that arranged it, but we had an it suite moved from one end of the room to the other. The plug sockets are on the bottom of the desk, facing downwards. Of course, the plugs fall out, epecially the heavier transformer type.

[AntiThesis]

That's insane! Completely crazy.

 

Ours certainly don't compare - closest is one that was installed in a cage with the solid part of the cage in front and the open mesh at the back.

[sparkeh]

Can't really compare with those but we did have a batch of whiteboards that were basically hung from a thin baton on the wall. Discovered when we went to check a connection on one and it fell off.

They were all right above trunking so would have hit that and fallen forward. If the infants were having carpet time then there would have been some squashed kids

[Andrew_C]

Any setup where the cable retraces its own path in the same direction multiple times will cause issues. This is because by coiling the wire then running a current through it it effectively turns into an inductor (electro-magnet).

Please can we get this straight? No, it doesn't as the neutral is carrying the same current but in reverse. ALL cables have a resistance, and to some extent heat up; the only reason that cables get too hot when coiled is that there is no way for the heat to escape.

 

Caveat - There are some instances where SINGLE CORE cables can act as inductors, but you won't find them loose in schools.

[lbradley]

Sorry to say, but defiantly not

 

I can take you and show you the classroom it's in!

 

What company inflicted this upon you? or can't you say

[sparkeh]

Heh, remembering more now, the IWB installations that were done before my time here: the poles are at the wrong height to project onto the board.

 

The installer's solution?

Steal some Lego and Blutack from the classroom to make little Lego legs for the back of the projector to angle it correctly

[dirtydog]

One of our projector installs would look exactly like that if we didn't have a suspended ceiling to hide an insane amount of excess wire. How difficult is to estimate the length of preterminated cable you need ?.....but more to the point most of the school projector installers are of the crash bang wallop variety, they'd rather not mess around with the delicate art of soldering vga pins. That's why they go for the lindy 10m+ lengths.

 

It's a shame because a proper install requires the installer to have that ability....run the correct length snip off a either end and then solder on. Even if they had gone for a more realistic length they would still have had some excess and they're no way to hide any excess in that picture.

 

But soldering vga pins is a dark art. Requiring a pair of pliers with an elastic band on the end and preferably a magnifying glass for the oldies willing to give it a go. Plus alot of patience and a massive amount of practice.

 

on a side note has anyone tried using those screw terminal three pin ends for when you're shortening power cables of electrical appliances (IEC-320 or kettle leads as some people mistakenly say). They are blooming terrible absolutely the worst design i hve ever come across. It's just ridiculously easy for all three cores to come out at any time. The number of times i've blown a fuse after doing one and then trying to test it out. Whoever designed them shot be shot.....trouble is i can't find any other design.

 

thats why we do all ours ourselves

we used to do them with predetermined lengths of cable but its fiddly if you dont have a loftspace. now we by custom faceplates with screw terminals so we run the cabling from projector to wallbox then chop and wire everything to the faceplate.

[timzim]

Pity the projector's not run on DC instead of AC - if that were the case the coil plus the steel pole would make a huge electromagnet and start attracting all the steel items in the classroom. Imagine the carnage by the end of the day!

[farmerste]

that looks an awful unsafe job, but i suspect it was done as a result of somebody telling the installer - 'you MUST not cut wires on the power' , so he didn't. either that or he didnt have a ladder high enough, or perhaps it was his last day working for the company ??