When you refer to a pull box you have to be talking about a conduit system. In a metallic system, no don't have to ground pull boxes. By the fact that it is a metallic system the conduit and associated boxes are already grounded by the connection to the distribution panel. In a PVC conduit system a ground wire has to be pulled so that the load device has a return ground wire to trip the breaker on a ground fault. Pull boxes in a PVC system don't have to be grounded just the last junction box at the load.
An electromagnet can, but you have to grasp metal for it to pull on.
it is easier to pull any plant out of the ground by a taproot
A tap root system
Since the fibrous roots are not deep rooted, it is easy to pull out such plants from the ground as compared to those with tap root system.
take a piece of grounded metal and touch it to the spark plugs or plug.
It is a push and a pull. When you move your body towards the ground, it is a pull. A pull as in a pull to the ground. It is a push when you are moving away from the ground.
Yes, you are allowed to pull these out of the ground. But you can not pull OB stakes out of the ground.
no magnets can not pull some aluminium.
if u pull a fish back it will ground
pull it out of the ground.