House can't supply enough power
So I was djing at my friends house last night and his house was unable to supply enough power. We we're using his cdj 850s with a djm 900. I'm not sure the watts on the sub or the speaker. On the upper floor the Christmas lights he had hanging were going out as well. Do you guys think it's just a troublesome outlet and we should distribute the load between different outlets or there is something wrong with the houses electrical as a whole? I'm going over there later to test the outlets with a multimeter but has anyone ever had this problem? Any and all solutions are appreciated.