Hey all. I'm working on sealing my new apartment against bugs and dust/air leakage prior to moving in. I caulked around most of the pipes and cables behind appliances without much issue. But there are two openings that have presented a challenge. The first is the ceiling light and the second is this electrical box I found behind the kitchen drawers. I sealed them with tape and caulked around wires that went through the tape.

I now have concerns that this might be a fire hazard or be unsafe in general because these things might get hot and won't have ventilation. Or at least, I might need to use something else to seal these openings because the tape might melt or catch fire. Afterwards, I did some research and I found out that spray foam might be better. Something like this: https://www.amazon.com/gp/product/B0002YX98O/ref=ox_sc_act_title_1?smid=ATVPDKIKX0DER&psc=1

So my questions are:

1. Is the way I have these two openings sealed up right now in any way dangerous or unsafe?

2. Would it be better to reseal them with spray foam and would that remove any safety concerns?

3. If spray foam wouldn't work either, are there any better alternatives?

Here is the ceiling light sealed up with plastic tape:

And after my "pro" caulking job:

Context photo for kitchen drawer:

Electrical box before I sealed it:

Box after I sealed it with painter's tape and caulk:

Some other examples of my sealing opening with caulk: