This picture is a typical 120/240 volt single phase load center. Note the location of the neutral bonding strips. They are different than the one below.  This also has a main shutoff breaker. 
This is another typical 120/240 volt single phase load center. This type of panel is a secondary panel because it has no main shutoff breaker. The neutral bonding strips are in a different location. 
This is a typical meter base from Bell and Hubbell. There are 4 prongs where the meter prongs go into. It also has a cover that goes over the meter and the meter base. 
The meter base is used when the service wire is underground in 3" conduit. The reason it is so long is when the service wire comes out of the ground it doesn't have conduit to come up to a standard meter base. So the wire  needs to be covered. by something.
Here is a picture of a  S type fuse and a adapter to fit in a socket. These are called Time Delay Fuse.  They are called this because they are timed delayed.
These types of fuses are W-15 fuse and a T-20 fuse. The 15 and 20 stand for how many amperes there are. Both of these fuses are made by Cooper Bussman. 
This is a 250 volt 100 amp fuse. This is called a sliding cartridge fuse because it has two prongs that stick out of the ends of the fuse.
The fuses pictured to the left are cartridge fuses. The smallest fuse is a 30 amp fuse and the largest fuse is a 300 amp fuse.  
These fuses pictured here are class SC fuses by Cooper Bussman. These fuses are used in a fuse box. 
This is a main shutoff breaker that goes into the first picture. These are used today in place of the fuses because they are much safer than the fuses. 

 

Index