Does anyone who has used this for electrical purposes determine what kind of current this tape can handle?

I'm surprised the manufacturer doesn't seem to state the current rating of this tape. Fortunately, it can be determined fairly easily. Current rating = Current Density * Cross-sectional area I measured this tape (1/4") to be 6.2mm wide and approximately 0.1mm thick. I made efforts to remove the glue with both Acetone and Rubbing Alcohol, but I was not completely successful, so the thickness measurement does include at least some of the glue. So, 6.2mm * 0.1mm gives us a cross-sectional area of 0.62mm. NIST Seems to use a current density of around 2.8 for Copper, so I'll do the same: 0.62 * 2.8 = 1.736 Amperes However, NIST uses very conservative values in their calculations. So let's round up to 2 Amps. To test my calculation, I took an approximately 4-inch piece of the tape and connected it between the terminals of my bench-top power supply. The tape was not attached to anything else, I left it floating in the air between its two connection points. I made sure no fans were running and turned off the Air Conditioner/Heat. I also took efforts to not breathe on or in the direction of the tape. Overkill? Perhaps. What I'm testing is to see if the tape significantly increases in temperature when exposed to 2.0A of current. Before applying power, I took a temperature measurement of the tape @ 72.0F (22.2C) using an infrared thermometer with an Emissivity setting of 0.95. I then set the bench top power supply to 12V @ 2A (voltage doesn't really matter here, but for sake of completeness...) and let it sit for 5 minutes. I took a temperature measurement about once every minute, but saw no gain in temperature. After 5 minutes, the temperature was still 72.0F. Immediately after removing power, I placed my finger on the tape, which felt slightly cool to the touch. Given everything outlined above, I'm pretty confident that it is safe to run 2A of current over this tape for long periods of time. I used pretty conservative numbers, so it is likely safe to go a bit higher even. However, if you want a good, safe limit, then 2.0 Amps seems to be a good number. Disclaimer: I am a stranger on the internet. While I have put in my best effort to give correct and accurate information, I still advise you to do your own research before applying the information contained within this answer. I bear no responsibility for loss of opportunity, finances, life, limb or property, or for any other damages you may incur as a result of following the advice contained within this answer.

will a magnet stick to the tape? If so, how powerfully?

A magnet will not stick to the tape because copper is effectively not magnetic.

Has anyone used this to prevent slugs from getting in flower pots?

I haven't yet but come spring, I plan to try it out. Slugs hate silver foil which I have used in my own garden to protect a patch of early black eyed susan transplants that these pests just love to eat. I will try the copper foil tape around the base of clay pots as suggested from information I read about the many uses of this foil tape. Sorry I dont have an exact answet for you. Happy Gardening.

Manufacturer	Zehhe
Brand	Zehhe
Model number	BF4964
Product Dimensions	10.9 x 10.9 x 0.51 cm; 41 g
Color	Copper
Material Type	Copper
Number of Items	1
Size	1/4inch
Manufacturer Part Number	BF4964
Item Weight	41 g

Copper Foil Tape with Double-Sided Conductive - EMI Shielding,Stained Glass,Soldering,Electrical Repairs,Slug Repellent,Paper Circuits,Grounding (1/4inch)

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