It all depends on your coil resistance and type of coil. When you use, say dual fused claptons, it requires more wattage to produce the same output as a regular coils. For example, if I used 26g regular coils, 5 wraps, on a 3mm id, equaling .3 ohms, I'd run it around 60-75w max. Using 26/32 claptons with the same wraps and ohms, would need 80-95w to result in the same amount of heat/ramp up time. Another example, is the TFV4 quad coils vs. the TFV8 oct. coils. Both have a .15 resistance. Yet the quad coils have a recommended wattage of 40-140w, and the oct coils have a 50-260w range. So vaping around 200w is possible, without getting too hot. More wire needs more power.