I would assume so.
That was general statement, not saying run a ring in the garage. Although, no reason why you can't.
Not if you take it directly after the meter it is not. What you are saying is that all homes would have again breaker between the meter and the CU. No need as the CU has one.
If taken off the CU yes. If not taken from the house CU, you need to size correctly.
That is what you said not me.
But they go through main RCD which may be less than the total of the mcb's, which protects the main cables.
It must protect the cables that feed it.
You are confused.
Never "assume" with electricity. Everything should be properly planned and carried out. You really haven't understood the issue here.
The only places for hacksaws are to cut SWA cable and bus bars in consumer units.
Rather pointless. The correct way, if it is a detached building is with SWA of appropriate size run as a radial circuit.
You are very confused.
The two most appropriate solutions, both run as a radial circuit are
a) Suitable breaker in CU of correct rating for garage power requirement and cable used to feed that from the house
b) As above but with suitable breaker separate to CU fed directly from a point after the meter and before the CU
Do stick to selling compression fittings - you can't get into too much trouble that way.
The cable needs to be sized correctly under *all* circumstances.
The MCBs do *not* protect the main cables. That is done by the electricity supplier's fuse.
Wrong. Cables are *not* protected by CUs or any other element at the load end of the cable.
Go and read the IEE On site Guide or Whitfield's Electrician's Guide.
You can find much of the latter on the TLC web site.
No. The cables form the meter, after the main fuse.
You are still confused.
The meter tails are protected by the electricity supplier's main fuse, not the MCBs in the CU.
An that same fuse would protect the cable to the garage CU, if the supply was taken this way. It's main protection would be the main breakers and collective breakers on the garage CU.
[snip dangerous advice from Drivel]
[snip dangerous advice from Drivel]
[snip dangerous advice from Drivel]
Crap.
The delivery capacity of the supply with the main fuse is vastly larger than the current carrying capacity of a cable that would be used to run a supply to a garage.
The cables *downstream* of the garage CU are protected by the MCBs installed therein.
[snip dangerous advice from Drivel]
Dangerous advice from Drivel again. This person should not be allowed on a DIY group.
Drivel hasn't a clue about this and shouldn't be allowed on a DIY group.
Please ignore all the dangerous 'advice' Drivel has posted as he hasn't a clue, and should be barred from posting on such things.
And the MCBs also prevent a large load on the supply cable.
If the garage CU has a 30A ring and A lighting circuit, then the supply cable should be rated more than 35A. Then the MCBs protect the supply cable. Get it? Think about it. Nah, don't think, it is fatal.
This pillock want the supply cable to be too small. Some mothers.....
Snip garbage. This one encouraged people not to service gas boilers because he never did it for 18 years. Some mothers.....
...the drivel from Plowman (alias Richard Cranium)
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