Switches Get Warm In Normal Operation

Question

I've noticed that my wall switch module feels quite warm to the touch. Is this normal, and is it safe?

If I mount multiple dimmer switches right next to each other, does that reduce the maximum load they can safely handle?

Answer

As with any dimmer, it is normal for the wall switch module to get hot. X10 wall switches can get as hot as 50C (122 F). All X10 switches have passed all necessary fire and safety standards.It is therefore perfectly safe.

Note also that the switch gets hotter as you increase the wattage of the lamp(s)/load you are controlling, and also gets hotter if you have multiple dimmer switches in the same wall box.

Therefore when using multiple dimmer switches, side by side, it is advisable to de-rate the switches, i.e., 500W if using one dimmer switch, 400W if two dimmer switches are in the same wall box, and 300W for three dimmer switches in the same wall box.