So after inspection and testing of a domestic property iv identified some remedial works one being the replacement of RCD s to A type from AC due to possibility of dc leakage blocking device from operating. My question is that on a shower priority unit the RCBO is also a AC type and I'm sure...
From a brief bit of Internet research my understanding is earth leakage circuit breakers monitor voltage on the CPC rather than an inbalance in current between L &N as an RCD does. Is this correct?
Hi all. Talented amateur here, stage electrician at school 1971 - 74 and have done much DIY electrical work iover the years, including central heating systems. I worked for several years for the residential division of Honeywell Control Systems and wrote many installation and user instructions...
Hi !
Much talk of the use of type A, type B and Type F RCDs recently.
As we know all are specified at varying levels to ignore the blinding effects of transient DC currents, that are being superimposed on our AC circuits by modern technology.
But is there a means to measure the level of this...
Hi
It’s a bad setup but I went for a call out in the night in a residential unit.
There’s a rcd in its own enclosure feeding a 14 way board that had tripped.
I reset it didn’t trip.
I passed 2 mornings later and still hadn’t tripped.
Whilst there on first visit I stuck my earth leakage clamp...
can some one help me with this problem?
I have one spike guard which has only neutral and line wires. but the sockets on the spike guard are 3 pin, the problem I am facing is that : I am getting current into my earthing line, I have got shocked many times from chargers, fridge surfaces, etc.
I...
hi all,
If there is such a thing as 'typical' values, what, in your experience would you consider these to be from equipment such as pc's and other IT, washing machines and any other significant sources?
thanks
Hi everyone, I have measured an earth leakage on twin Flo light fittings (2x58W fittings) in open plan office. Office has 18x twin Flo light fittings which are divided into 3 separate circuits, and 3x (10A) RCBOs for each circuit. I have reading of 3mA at each light fitting. 2x circuits are...
Seems to be my month for finding odd bodges by supposed professionals.
Installing an external socket in a shed today at a park home (non-mobile home) and find this label on the consumer unit:
and this behind the door:
It looks like the CU was installed at the factory and then shipped with...
Hi all. Im looking for some help regards a massive earth leakage issue in a new i installation
Its a little more complicated than this but its hard to explain. New board 16 way tails splits due to old board still i operation for new few weeks. Large 4 bed house. Pme system. Earth verified...
I'm facing an electrical issue in my house since last Christmas. When the lights or appliance with motor in any room are turned off/on the TV would go out and come back on in a short span (as if the power went out and came back in a second). I recently had some mishaps where my two older PCs PSU...
I know every computer/equipment type will have a slighty different earth leakage stated by the manufacturer, however I was wondering what people use as a "rule of thumb" value when designing ring final circuits in offices intended to be used for computers.
I was thinking 1.5mA per computer inc...
Hi Guys, Have a problem with a Omron Switch mode power supply & Omron Control Relay Which is only switching a 3phase mixer paddle to stir liquid while in the heating process. The control gear is fed from a single phase supply plugged into a RCD protected socket. The Rcd trips within 9ms @ X1.
I...
How do you use clamp meter?
Do you just clamp the line? Or line and neutral?
Also been working with a couple of guys that have earth leakage meters and one clamps the line and neutral and the other clamps the earth?
Can someone tell me the correct ways?
Thanks
Hi My name is Allen Brauteseth from Cape Town South Africa. I am a Qualified electrician and am sitting with a problem being I have a commercial fridge for cold drinks that trips out the earth leakage after running for 10 minutes please could someone help me as the supplier says there isn't...
Hello Everyone,
I am from India. Things were good [seemed to be good] with temporary electric connection [single phase, 230v] to our new house. Now when we are organizing electrical wiring, dividing phases, installing ELCB, the problem started occuring.
Now the electricity connection is of 3...
got a new toy ha ha clamped my new earth leakage clamp around my earth cable local to consumer and was getting 5mili amp leakage question what mainly causes the earth leakage other than computers fridges etc
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