Adiabatic Equation

[ipf]

I couldn't agree more, but I just wandered.

With a wonder lead ?

 

[1shortcircuit]

Interesting 1444 views 15 replies. I guess not a lot of sparkies understand this one.

To view this thread you do not need to be a member, so anyone could be looking :thumbsup

 

[kingeri]

I tend to use 16mm just because it's easier and I'd rather go too big than too small. I suppose it could be classed as laziness.

 

[D Skelton]

I tend to use 16mm just because it's easier and I'd rather go too big than too small. I suppose it could be classed as laziness.

Purely out of interest, and I'm not having a pop at ya, what's easier about using 16mm as opposed to 10mm? Personally, I find 10mm a whole loit easier to navigate around a CU.

 

[kingeri]

Purely out of interest, and I'm not having a pop at ya, what's easier about using 16mm as opposed to 10mm? Personally, I find 10mm a whole loit easier to navigate around a CU.

You're absolutely correct, of course. I do indeed use 10mm. Don't know what I was thinking. :rolleyes4::rolleyes4::rolleyes4::rolleyes4::rolleyes4:

 

[Amp David]

Interesting 1444 views 15 replies. I guess not a lot of sparkies understand this one.

Whats there not to understand.

All the figure to use are given to you in regs.

Never once had a domestic install have the wrong size MEC after using the adiabatic

 

[Rauer]

Have a read of 543.1.3 and 543.1.4

 

[telectrix]

rivetting.

 

[Rauer]

Sorry ,I'm brushing up for my assessment!

 

[telectrix]

YOU SHOULD HAVE AN APPRENTICE FOR BRUSHING UP. :juggle:

 

[Rauer]

Just reading though "electricians guide to the building regs" that's riveting!!

 

[Amp David]

Sorry ,I'm brushing up for my assessment!

Part P assessment, I wouldn't bother brushing up on calculation method, theres not a cat in hells chance they'll ask for an example.

 

[Rauer]

When they talk about wanting to see design , what do they mean by this?

 

[ipf]

When they talk about wanting to see de sign , what do they mean by this?

The logo on your van!

 

[MarkieSparkie]

When they talk about wanting to see design , what do they mean by this?

The colour and denomination of the wads of cash you're paying them!imp:

 

[Geoffsd]

As a point of interest - working the adiabatic equation backwards -

taking t as 0.1s and k as 115 as most modern domestic cases will be

a 10mm² earthing conductor is good for a Ze down to 0.06Ω and

a 16mm² is only good down to 0.04Ω .

It would seem that the 16mm² is very rarely required, if at all.

 

[Amp David]

For the majority of my MEC I use 143 as the value for k as table

 

[Geoffsd]

That would make the required conductor even smaller.

 

[telectrix]

me too.

 

[Amp David]

That would make the required conductor even smaller.

Exactamondo:ihih: