Adjustable MR16 Spotlight For Tension Wire Systems

Hello, Are these lamps safe to use in a humid environment such as in a bathroom ceiling? Thanks!
These would not be suitable for a bathroom

If we have more than one set in an office, can they be wired together? Also, can these be fitted to a dimmer switch?
Yes, this can be done by an electrician. Yes, they can be dimmed via a dimmer switch.

I am requesting the full length of this product to see if it will reach from end to end in the room I am supplying it for?
This is just a tension wire track head. Not a complete system. Please see our ready to install kits for complete systems.

I am renewing a LV tension wire system, and wish to use the existing transformer, which is an ITAC PT300 rated at 300VA max. The wire run is about 7.5m, so I envisage needing 20m of wire. I should like to have up to 10 lamps along the run if possible: if converting to LED, what is the maximum number of lamps I can have? - i.e. do I use the LED wattage (eg 7.5W) or do I calculate on the halogen-equivalent (eg 35W)? When it comes to choosing bulbs, do I need to specify for example Philips ones that are 12V AC (rather than DC) to cope with the old transformer?
Calculating the load should be based on the lamp wattage rather than the theoretical halogen equivalent. So if you’re planing to use ten 7.5w lamps try putting a load of 70 watts (i.e. 2 x 35w halogen lamps) on your existing transformer for a period of time to see how it works on reduced load. Some will work okay, some will buzz, some will flash. This will let you know if it’s worth keeping the transformer. Longer runs should use 6mm cable you could try 4mm but voltage drop may be an issue, it depends on the output voltage, how ‘beefy’ the transformer is and what lamp you use. Most bi-pin lamps are AC and your transformer is bound to be AC too, so stick with regular LED MR16 lamps. We are happy to help you with the project so do keep in touch with your findings but email may be a better way for us to chat.