darek_wp wrote: Provided that the sum of the power of all devices turned on at the same time does not exceed the permissible load of the socket and the installation connected to it - by default, as standard, it is about 2200W
Safer 75% of 2200W
(correction for consumption when switching on and starting the strip - when turning on the device, they temporarily consume more power - unless they have a soft start [there is still the question of what type of receivers, because something else is a heating stove and something else a power supply for something there]).
100% do not recommend. Why ?
primo: the power consumption of a given device can be averaged, i.e. it takes more W for start-up than when it is already on
secondo: measurement conditions, etc., health and safety (in the sense that the strip is protected against overheating, if it will work for a few hours at exactly 2200W, what is the cable cross-section, manufacturer, technical condition of the contacts, I do not even mention the risk of a blind earthing pin [and there are sometimes such cases] etc.).
tetrio: extension cord for extension cord = decrease in efficiency of the entire line compared to a longer extension cord.
The answer is simple: Yes, but immediately insure your home against a fire due to a short circuit in the electrical system

(the decision is yours)