Recently I got an affordable temperature scanner and today I decided to just check the temperature of various household equipments.

To my surprise, the MCB (not sure if I am using the correct name for that box, but it is the main black box inside the house with a fuse) part holding the fuse came out to be 100 to 110 degrees celsius with 4 aircons on. Would like to ask if anyone knows this is normal? TQ

This post has been edited by Wedchar2912: Dec 2 2021, 12:31 AM

Yeah, am seriously considering that now. I just realize that when i was doing the measurement, we were boiling water and someone was taking a hot shower as well.

it is the part I circled in red that was in 100s temperature. But the fuse box says 60Amp, which is almost impossible to reach I think. I wonder if the fuse is about to give way: it was last changed like 20 years ago maybe.



Not sure if this function the same as the black box in your picture...

This post has been edited by Wedchar2912: Dec 2 2021, 01:11 AM

agree... and yesterday was a very hot day, so that could be a factor in increased current load.

Agree with you. like you said, didn't even factor in other stuffs like TV, fridges, computers etc.
And yesterday was a hot day. i guess the aircons were working at 100% all at once.

thanks for the ABB or Hager brand recommendations. I completely have no experience in this. Called a local electrician recommended by some shop, and hopefully the chap can come today or tomorrow to take a look and make necessary changes.

Luckily today weather is cooler, and the temperature on the MCB is hovering at 70 degrees. but scary to have it at 100 degrees. can cook meat already.

the cheapo scanner was in Celsius mode, and i did double check yesterday by pointing it into my freezer (displayed -15) and pointing to the boiled water (displayed 98). So it is at least ballpark accurate.

yeah, i am surprised as well that the electrical tape seems to be holding on well... time to change the black box regardless I think (the tape was there cos the side plastic chipped off and I didn't want any insect to accidentally go in and cause sparks).