Products > Test Equipment
Is NON-CONTACT VOLTAGE feature worth it?
bdunham7:
--- Quote from: donescamillo on March 14, 2024, 11:42:43 am ---Silly question, but still have to ask it:
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It's actually not silly. NCV is definitely worth having but probably not worth having incorporated into a DMM. The standalone tools are inexpensive and generally work better. It is a good idea to use both NCV first and then some other tester (DMM, 2-pole, test light, etc) since one possible wiring fault is where you have only two wires that are at the same high potential and no accessible ground. The probe-contact EF detection as found in the 829S may also be a reasonable substitute for NCV as it will also detect any high potential with one probe.
For general electrical work a more useful feature to have in your DMM is the Lo-Z function (aka "Auto Check") which unfortunately the 869S does not have, but the 829S does.
bdunham7:
--- Quote from: Majorassburn on March 14, 2024, 02:24:25 pm ---1) Above 240V, DO NOT USE A DMM!!!
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So for measuring voltage drop in a 3-PH 480VAC motor circuit you would use a....????
shapirus:
--- Quote from: bdunham7 on March 14, 2024, 03:20:44 pm ---So for measuring voltage drop in a 3-PH 480VAC motor circuit you would use a....????
--- End quote ---
An analog MM, I suppose.
2N3055:
--- Quote from: Majorassburn on March 14, 2024, 02:24:25 pm ---3) Chinese DMM's & Brymens are fine for ELECTRONICS but NOT MAINS ELECTRICITY.
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Yes, we get it, Murica best.... :-+
Brymen has CAT IV/1000V meters that Fluke does not have.
If anything, it is safer than yellow overpriced brand.
For checking in house electricity even Chinese UNI-T is good enough. Low energy.
If you want to mess with power distribution, don't, if you don't know what you're doing..
Not because of meter used but general safety rules...
NCV in meter is not useful at all. Meter case is too big.
NCV volt-stick type is useful but not to be fully trusted. It is one of those tools that if it shows voltage you know it is dangerous, but if it does not show anything it is not sure it is safe...
I find contact detectors to be better choice.
I would get BM869S as superb meter and get separate BT-75 Voltage tester for electrician work.
It is fully featured voltage detector, NCV detection, contact voltage detection, RCD testing, voltage, resistance and continuity.
It has vibration alert for high voltages, and will detect high voltage even with dead batteries.
themadhippy:
And of course before and after every voltage test were all proving the meter
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