I'm looking for some guidance as I can't get my head round the possible ramifications of what I'm proposing to do.
In the US there are a couple of manufactures / suppliers of heat strip for use in reptile enclosures. It's rated at 12w per foot when run on US 120v supplies. Using basic Ohms law I calculated the resistance for a 12" length to be 1200 ohms, which would draw 100mA if connected directly across the 120v supply. Now punching the resistance into the formula for 240v and the power value is increased to 48w, with 200mA draw. Now I'm guessing that if this were plugged directly across 240v there would be a likelihood that the heater would burn out ??
The other issue in the mix is that the intention is to run the strip via a suitable thermostat, typically set to 32c, so whilst the strip would heat up quickly, the thermostat would then reduce the chance of it overheating ??
Could someone advise if running these strips on 240v (via a thermostat) would be a practical idea ?
Cheers
Malcolm