unpolorized plugs

[restez]

Hello guys

Few ?s

1)In older homes where no ground was installed and outlets were of 2 prongs
is this just hot wire and nuetral when unpolorized and and polorized?

2)If these plugs were modified and replaced with modern 3 prong outlets but the
wiring was not upgraded so being false grounds is this dangerous and why ?

3) Can someone tell me what it means to be a unpolorize plug outlet im guesing in to prong
old outlets both holes are the same size please correct me if i am wrong i just want to get a better understanding of this because i may buy a 1947 home and i know the house has modern outlets but open ground .
Thanks

 

[hasel5]

When you get to deciding whether you are going to buy just get a Periodic inspection carried out by an electrical contractor from one of the approved regulatory bodies

Hope This Helps

 

[Adam W]

Which country are you in?

If you just change a socket from a 2 pin to 3 pin there won't be any earth to connect to the earth terminal, which is potentially dangerous in the event of a fault to earth - instead of going down the wire the fault current will go through the next person to make contact with the metallic casing.
Also if the house was wired in 1947 and hasn't already been rewired, it probably needs it by now.

 

[restez]

Thanks but if my second answer can be answered it would help

If these plugs were modified and replaced with modern 3 prong outlets but the
wiring was not upgraded so being false grounds is this dangerous and why ?

 

[restez]

Ca,USA

 

[ezzzekiel]

well if im understanding you correctly then yes a cpc should be run and terminated at each accessory in your case it would not

 

[Adam W]

Thanks but if my second answer can be answered it would help

If these plugs were modified and replaced with modern 3 prong outlets but the
wiring was not upgraded so being false grounds is this dangerous and why ?

If you just change a socket from a 2 pin to 3 pin there won't be any earth to connect to the earth terminal, which is potentially dangerous in the event of a fault to earth - instead of going down the wire the fault current will go through the next person to make contact with the metallic casing.

 

[restez]

Thanks well put i appreciate it