Is there any symbol for electrical insulation?
Is there any symbol for insulated wire? is there any symbol for non-insulated wire?
Electronic – ny symbol for electrical insulation
insulationsafetysymbol [~]
Related Solutions
3 replies and no-one's stated the blindingly obvious idea that insulating tape is (or should be) specifically designed with electrical insulation properties, and exposure to voltage in mind.
Other tapes may or may not behave nicely in that application - some materials (both tapes & adhesives) can become conductive or worse over time.
I would also like to add that it seems a lot of people believe electrical tape is a suitable long-term / permanent solution in various applications. As far as I'm concerned it's not, ever. Heat-shrink sleeving, spiral wrap, flexible conduit, self-amalgamating tape, rubber sleeves, junction boxes, table ties/clips, grommets, cable markers, etc. are all better solutions for almost any given use of electrical tape other than to temporarily hold, bundle, insulate, or mark a cable.
I've not seen it specified as a permanent or proper solution to anything in the commercial/industrial/telecomms/electrical world.
From personal experience, tape WILL go brittle, shift, fall off, fail to hold and/or leave a nasty sticky residue all over whatever you stuck it to after a while.
Edit to add: The case for "proper" electrical tape is similar to "proper" VDE rated insulated tools, most screwdrivers you buy will have a plastic handle that insulates you from voltage but only VDE rated ones come with an actual guarantee of safety with a rated voltage (1000v usually).
I don't think so- I've never seen such a thing and if you look at the internal design of a typical receptacle I don't think that such a plug could be reliably backward compatible unless the insulated length was only a couple mm and the thickness very thin. Given the enormous installed base of receptacles and extension cords, such a change is unlikely to be popularly accepted.
It is possible to get even an adult-sized finger under even a normal plug, so such a design would not pass the UL 4mm baby-finger requirement if it was to be introduced today.
Here is a photo of an AC adapter plugged into a power bar receptacle. There is 120V present on the pins (verified by voltmeter) and the finger is an adult one (mine, just before my death by electrocution).
It's worse again if the pins are bent, which is pretty easy with ungrounded cord ends. Especially if some cretin pulls the plug out by yanking on the cord at an obtuse angle.
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Best Answer
As mentioned in other answers, the answer is no, or better, the whitespace indicate non connection. You can see, for example, the difference between the gate in JFET (or base in BJT) symbol and the insulated gate in MOSFET and IGBT symbol.
The only thing I can see in Standard is the following symbol: