Maximising 10mm SWA to garage CU.

[MattH]

Max Zs for 50 amp MCB's in my 18.2 edition pocket guide is,
B type 0.73 ohms.
C type 0.36 ohms.

63 amp,
B type 0.58 ohms.
C type 0.29 ohms.
See if you can get the test results off the sparks.

That’s really helpful, thank you.

 

[sparkysy]

@dobbslc
@MattH
These are without correction factors applied from the brown books Unite electricians guide.

 

[dobbslc]

It's confusing stuff! And to think plumbers charge more!

 

[dobbslc]

The numbers I quoted were straight off the internet, maybe they're the 80% ones.

 

[sparkysy]

Not sure, they don't look quite right even with corrections applied, the C50 I got as a max at 0.28 but still at work currently so I only have the Unite book with me and having my own issues!
If I get time later I will find the big brown book and have a gander!

 

[MattH]

@dobbslc
@MattH
These are without correction factors applied from the brown books Unite electricians guide.

Thanks for that, the official numbers.

 

[dobbslc]

I've never even heard of the Unite electricians guide, does it have a section on striking?

 

[sparkysy]

Lol they should have!
They have been around for years at least since the 16th edition, it's a very handy book for on site and has loads of useful information in it that's not in the on site guide! And only £8!!

 

[gaz1]

It's confusing stuff! And to think plumbers charge more!

yeah right ... i wish we could charge more customers are bad enough moaning about the charges they already get

 

[brightspark]

yeah right ... i wish we could charge more customers are bad enough moaning about the charges they already get

im ok i can take it or leave it i wont even go price jobs just tell em the hourly rate and it is what it is i wont even do jobs that are further than 8 miles from my house . no need and i turn a lot down

 

[Robotstar5]

I've never even heard of the Unite electricians guide, does it have a section on striking?

It was the EETPU guide when I started in the 70's, always found it handy to have around but tend to use the on-site guide these days