Obvious question more than likely.

[jwc]

Second question of mine on here and it's one I've never got round to getting an answer for.


Mains comes into a building through a 60A main fuse for instance.
Why then are main switches rated at 100A or 80A?
Does this mean any load above 60A would blow the main fuse before it blew the main breaker?


Don't be harsh people. I'm fully aware the answer's probably an obvious one.

 

[Guitarist]

When I was attending the 17th edition course some time ago, the tutor was telling us how he had an irate boss storm into one of his lectures to tear strips off him about something he'd told "his boys". For years this gaffer had told his boys that to test an RCD all you have to do is press the test button and the internal gubbins did all the calculations and tripped out if it was all hunky dory. He was very angry that the tutor had told them all that they need to use a piece of equipment to carry out testing...

 

[shagbite]

Yes but he was saying, if you set the stat to say, 25*C, then thats what the radiator temperature will be at.....but the

radiator temperature is controlled by the TRV.

As I said, its just miss/ill information from his tutor/mentor.....but then again, this may have never come up over the 4 years!!

i've never bothered with those - never really trusted them. i just have the old lockshield valves.