Max Z's for 32A Type C MCB
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Yes, that is correct.
I only skim read the thread and saw a Ze of 0.88ohms.
The max permitted values are:
TN-C-S : 0.35ohms
TN-S : 0.80 ohms
TT : 100 ohms
I only skim read the thread and saw a Ze of 0.88ohms.
The max permitted values are:
TN-C-S : 0.35ohms
TN-S : 0.80 ohms
TT : 100 ohms
Cheers!, i better stop replying to this thread before I further embarrass myself.
Not at all.
It is better to ask. If you do not know the answer, then chances are, someone else doesn't either.
If you ask, you get to know the correct answer rather than having to guess or assume, even if you look a bit silly in the process
It is better to ask. If you do not know the answer, then chances are, someone else doesn't either.
If you ask, you get to know the correct answer rather than having to guess or assume, even if you look a bit silly in the process
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Not at all.
It is better to ask. If you do not know the answer, then chances are, someone else doesn't either.
If you ask, you get to know the correct answer rather than having to guess or assume, even if you look a bit silly in the process
I guess your right, I also feel a bit better for now knowing I was right after being immediately dismissed by two "fully qualified" electricians who didn't even bother to look what type the MCB was and assumed that I was somehow using a multimeter to test the earth fault loop impedance. I only suggested that they tested the circuit because it seemed high.
Matt
Was it a FCU (Fused Connection Unit) or a socket which had been spurred off the ring final?
If it was a spur did you connect the TV into the circuit and are you asked to complete a Minor Works Certificate?
Socket spurred from ring final.
I did not put the spur in, that was someone else's work.
All I had to do was mount the TV, Mount the VGA / Audio balun and pull the CAT5 through to the main digital signage box.
The Megger only ever came into play because I had it given (calibrated) and I like to make sure that anything I touched last is as safe as it can be.
Hence the reason that the TV is mounted and ready to go but not plugged in!
Ahh, fair enough.
Full marks for identifying a problem though.
Full marks for identifying a problem though.
Trust me, I didn't get full marks from my boss when I told him I wouldnt plug his posh new telly in!!!!
yep page 50 /41.5 note 2 the big red book
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I know this is a moot point, but technically, don't the regs "permit" 1667 Ohms?
For Zs, but Ze will obviously have to be a tad lower
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