Also, phone an ambulance, or yell for a bystander to phone and report back.
Seek an insulating object: wooden broom, fibre glass pole, piece of lumber etc... to separate victim from wire.
Where I work, there are plastic canes near the first aid box in each room, for this very purpose.
Once victim is separated from electric source, remember ABC:
Airway, Breathing, Circulation.
If you have CPR training, this is where you would make sure nothing is blocking their airway, see if they are breathing, and if not, provide resuscitation, then check for a pulse, and if none, provide chest compressions to manually pump their heart.
If you take swimming lessons, and work towards becoming a lifeguard, you will be taught this.
If your workplace offers safety training, you could request it.
If not, you might pay for a course through the Red Cross / Red Crescent / St. John's Amulance / Royal Life Saving or YMCA / YWCA societies.
Take any plastic made object as your insulator . Using it to push him away from the power source or using it to chop away the link between him and the power source,
I used a plastic chair to chop off an air conditioner power cable that was caught fire due to overloaded. I held the plastic parts of chair and used the metal legs to hit the cable a few times hardly until it broke into open circuit to stop electric flame.
Any dry wood object is also work well to save life or fire causing by 120V and 240V power sources.
NEVER ATTEMPT TO USE THESE SIMPLE OBJECTS TO DEAL WITH STREET POWER SOURCE THAT HAS MORE THAN 5000V.
IT KILLS YOU INSTANTLY AT THE SAME TIME WHILE TOUCHING IT.
If you are wearing shoes with a plastic or rubber sole, you can kick him away from the power source. You can also use a jacket or sweater as a lasso to pull him away.
The easiest thing is to hit the person quickly with your body. It's not the safest thing, but it's the quickest. When you get electrocuted you lose control of your muscles so you need to be moving fast enough (think football tackle) to knock the person off the circuit. I'm told my high school biology teacher did this once to a friend successfully. Your results may vary.
If a person has caught a wire and got current.How can I save him?
Like using what?
If I cannot turn the meter off.Even if I get to the meter he might die.
What can I do at the spot to save him?
If I try to pull him away then I,ll get current too?