Well it was not uncommon just a few years ago for some electricians to feel comfortable with some installations not having an RCD, some thought an RCD was OTT an unnessecary expense
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EICR and fuse box
- Thread starter yartin
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I’d agree with that in a personal home , but not a rental property
A home owner has no obligation to act on an unsatisfactory EICR whereas a Landlord must make improvements
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Yes I just meant a C1 C2 or C3 should be the same no matter who the house belongs to
Yes I just meant a C1 C2 or C3 should be the same no matter who the house belongs to
And for the record a home owner can ignore the findings
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Has yartin gone again?
I know from personal experience that a small board is most likely oversubscribed.
I bought a house in 1999 that was rewired in 1994. It has a Hager board with an RCD main switch and not nearly enough breakers for a 5 bed, 3 bath, 2 large reception detached house.
Consequently, some breakers have more than one circuit attached.
I would like to bet that unless his property is a small, unmolested flat, that board will also have more circuits than CPDs.
It should be brought up to date for the sake of the tenants.
I know from personal experience that a small board is most likely oversubscribed.
I bought a house in 1999 that was rewired in 1994. It has a Hager board with an RCD main switch and not nearly enough breakers for a 5 bed, 3 bath, 2 large reception detached house.
Consequently, some breakers have more than one circuit attached.
I would like to bet that unless his property is a small, unmolested flat, that board will also have more circuits than CPDs.
It should be brought up to date for the sake of the tenants.
I know what you mean. But can I just point out that you can’t have more circuits than breakers/fuses as , by definition, a circuit starts at the OPD therefore anything connected to it is one circuit, example two rings could be one circuit, two lighting or power radials could be one circuit, it is the fuse/breaker that defines the circuit!
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But in reality two lighting circuits in one breaker is two lighting circuits, if it was one would you do a zs or r1+r2 at the end of just one leg and assume the other is ok? Asking for a friend
No you would do Zs/ R1 + R2 etc etc (ins res) on both legs and record the most onerous one, if the worst case complies then the remainder does too.
Example - if we were to construct a ring final circuit of say ten twin sockets and do an R1, Rn and R2 measurement)or calculation) and all the individual connections between sockets were exactly the same length then doing the R1 + R2 calculation etc we could arrive at a VD and Earth Fault loop figure at a theoretical point halfway around the ring, however we would know that this does not exactly exist so this figure would only be correct halfway between sockets 5 and 6, all of the other readings would be better, can also calculate for lengths of spurs and whether they are connected directly to a point on the ring itself or just at another place on the ring.
Although I’ve never known of it being done, we could join the two ends of a ring L to L, N to N and E to E and take a reading from every single point supplied via the ring L to rack socket L and similarly with N and E if we decided to.
But instead we do the crossover method which gives a very near approximation and should give nearly the same result for each socket actually on the ring and higher values on spurs according to spur radial length from the ring itself.
Example - if we were to construct a ring final circuit of say ten twin sockets and do an R1, Rn and R2 measurement)or calculation) and all the individual connections between sockets were exactly the same length then doing the R1 + R2 calculation etc we could arrive at a VD and Earth Fault loop figure at a theoretical point halfway around the ring, however we would know that this does not exactly exist so this figure would only be correct halfway between sockets 5 and 6, all of the other readings would be better, can also calculate for lengths of spurs and whether they are connected directly to a point on the ring itself or just at another place on the ring.
Although I’ve never known of it being done, we could join the two ends of a ring L to L, N to N and E to E and take a reading from every single point supplied via the ring L to rack socket L and similarly with N and E if we decided to.
But instead we do the crossover method which gives a very near approximation and should give nearly the same result for each socket actually on the ring and higher values on spurs according to spur radial length from the ring itself.
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