what equipment does electrician use
An electrician will use a socket set, unless he/she is a strictly residential electrician. This is not a high-use item, nor is it used to tighten to extremes. Deep sockets are more valuable than shallow, and both 1/4 and 3/8 ratchets are useful.
Many electricians use a tool belt with only a couple of pockets for parts, though three are four pockets can be handy to keep parts from getting mixed up. Several pockets will be needed for hand tools, with loops on both the inside and outside for pliers.