In most cases I would presume that most electricians use test leads which will normally come with digital multi-meter.
If you buy a premium meter or special kit you will normally buy a special kit but most the time you get okay PVC Jacketed test leads.
After testing out the Fluke 279 FC thermal imaging multi-meter which at the moment can cost your around £1000 on Amazon, this is on the higher side of them as it is a 279FC/iFlex kit, this will include the current clamp and upgraded testing leads which are the TL175.
Now, I bet you are wondering what is so special about the Fluke TL 175 Twist Guard test leads, well it proves to be so special that most the electricians in my local area use them and even more so to bother posting about it here.
The test leads have built in test shrouds which are retractable if you twist the probe housing in a particular way. They are flawless and work extremely well. The older versions of test leads easy to lose pieces that are very small. On this new tool the pieces have been built in so there is no way to lose them.
The test leads are more flexible with and temperature resistant PVC leads which works really well and the wiring has been made with silicone jacketing.
The Safety Ratings For This Device: CAT II 1000V, CAT III 1000V, CAT IV 600V, 10A maximum