Background
I live in Indonesia, the voltage for residential buildings ranges from 220 V to 230 V, I need help with the installation of the Schneider products. Here is another link to the thread about the installation of Surge Arrester in Picture 1, which is related to the installation discussed...
Hello,
What happens if we use disconnect switch over its operating curent Ie?
For ex.
If our circuit is motor circuit and current range is 140A. We need to use 160A. But we used a disconnect switch with operating current Ie as 125A not 160A.
Making and breaking capacity of a disconnect...
Hello all,
I have a question please concerning the calculation of the non-adiabatic factor for screen/sheath with a case that is not mentioned clearly in BS 7454
If we have a cable with below construction:
CU/SC/XLPE/SC/CU WIRES/LEAD/PE outer sheath
As per BS 7454 paragraph 6, the formula...
Edited - please read right to the end!
Grateful for any advice regarding CT metering which seems to be generating inaccurate/implausible readings.
Our charity has a commercial building with 3-phase connection into a busbar chamber at one end - let’s call us ABC.
The rest of the chamber...
I have a problem and I think I have a solution but wanted to throw it out there to check it is acceptable..
First floor flat with two fuseboards - 1 24hr and 1 Night time economy. The boards are being supplied by two armoured cables coming from separate isolators/meters (60A) from the ground...
It is said that current equals voltage divided by resistance however in what instance is that true? A 9-volt battery gives off 2.7 amps I can make a generator that creates 27 volts but only gives off one amp in what way work? You can't tell me that 26 amps is being burnt off by 180 ft of 28...
Good evening,
1) Is the motor current on the nameplate always the full load current: the maximum current the motor can draw without there being damage to its winding insulation.
2) Often in motor books, I see the term nominal current? is this the current that the motor draws under normal...
Hi,
Moved into a property of late that has the following fuse box. Got advice telling me that it's safe, but doesn't meet current regulations, as well as that it could go in the next year, or last another 15.
Want to get opinions on next steps. Ideally, I'd like to replace it with a consumer...
hi all,
i recently bought a flat and got a years old cooker hood in it.. which i am trying to replace..
all done but the connection inside it does not have power... tried all the switches on and stuff but still no joy..
any place where is should check .. or how to find the fault or where the...
Hi,
Electric car charge points need a 6mA DC leakage current detector.
This is supposedly needed since the EV contains a high voltage DC battery....and the insulation between the high voltage battery and the mains line and neutral may fail.
Document showing Why 6mA DC leakage detectors are...
Hi, I'm new to electronics and exploring the basics so please please forgive me.
Currently I have a simple circuit with a 12V,1A PSU, bulb and mulitmeter.
When using the multimeter to meaure the bulb's resistance I get 4.5 ohms and then 12V for the voltage across the bulb. According to Ohm's...
I am attempting to use my DMM to identify a parasitic drain in my car's electrical system using a Chinaseum-brand DMM with an amp clamp.
After I set the thing to DC amps and before I clamp it to the target conductor, it displays a range between 0.1A and .22A. This makes t'shooting with this...
Hi, I’ve got a 24v 10A power supply, fed from a 240v 6A breaker, that is breaking, it feeds three 6A type b circuit breakers, the first one I replaced was clearly struggling like it was overloaded and the second just gave up, before I fit the third I was wondering if I was to measure the...
Is there any advantage from the perspective of current ratings/de-ratings of using galvanised round conduit over same size PVC conduit? With both to be chased/buried in brick wall and plastered over?
If so, where is this specified?
Cheers
Does anyone have a link to various time current curves relevant to UK MCBs and MCCBs in the 16-1,200 amp range? Specifically, how many times the handle rating does it take for each to trip at 10, 5 and 1 second.
Hi All
got a question regarding SY cable. I have tried to find the current rating for 6mm SY cable and have found a data sheet the GEM cables which states 33 amps in conduit thermal wall and 54amps when in free air. Also seen a few other manufactures state these ratings but a lot stating...
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