| Products > Test Equipment |
| Big Clive's "Trashy" meter, unboxed ( Duratool D03047 multimeter ) |
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| Fungus:
--- Quote from: Someone on April 26, 2023, 04:31:22 am ---Someone else has done the hard work and figured out the probability of seeing something outside of CAT II at a mains outlet is vanishingly improbable (assuming everything upstream of there is installed to your prevailing standards). Broad categories that encompass close to worst case conditions. --- End quote --- Yes, but: a) You can't tell if it's a CAT II mains socket just by looking at it so what meter should you use? b) Is there any point in buying a meter for mains work that's limited to CAT II? (eg. Is it much cheaper? What...?) |
| robert.rozee:
--- Quote from: Fungus on April 26, 2023, 06:10:48 am ---a) You can't tell if it's a CAT II mains socket just by looking at it so what meter should you use? b) Is there any point in buying a meter for mains work that's limited to CAT II? (eg. Is it much cheaper? What...?) --- End quote --- what on earth has this got to do with the discussion of a meter marked "Cat I"?! the argument over the difference between "Cat II" and "Cat III" designation is a sideshow, please start a new thread about it. cheers, rob :-) |
| Fungus:
--- Quote from: robert.rozee on April 26, 2023, 06:17:29 am ---the argument over the difference between "Cat II" and "Cat III" is a sideshow, please start a new thread about it. --- End quote --- Not a bad idea. |
| Someone:
--- Quote from: Fungus on April 26, 2023, 06:10:48 am --- --- Quote from: Someone on April 26, 2023, 04:31:22 am ---Someone else has done the hard work and figured out the probability of seeing something outside of CAT II at a mains outlet is vanishingly improbable (assuming everything upstream of there is installed to your prevailing standards). Broad categories that encompass close to worst case conditions. --- End quote --- Yes, but: a) You can't tell if it's a CAT II mains socket just by looking at it so what meter should you use? b) Is there any point in buying a meter for mains work that's limited to CAT II? (eg. Is it much cheaper? What...?) --- End quote --- Every mains socket outlet is CAT III, things plugged into it are CAT II until they reach safety isolation at which point the electronics beyond there can become CAT I. Why is this so hard to understand? |
| David Aurora:
--- Quote from: IanB on April 26, 2023, 04:08:37 am --- --- Quote from: David Aurora on April 26, 2023, 02:20:41 am ---Have you got any plans to torture test any bench meters? Unless I missed it I haven't seen any so far from you. I'd be really curious to see what you find --- End quote --- Are bench meters supposed to be robust? In my mind I think of them as sensitive, delicate, precision instruments, things to be treated with care. Would you expect an expensive Mitutoyo micrometer to survive being chucked in a tool drawer? --- End quote --- Are you talking about drop tests etc? I'm talking about surges/spikes/overload conditions/etc |
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