This is in Guatemala, in a semi-rural area, so there are no codes as such to be followed. Also local electricians are mainly DIYers like me, so I haven't gotten much consistent help there.
I have the power connected to a meter on a post by the property edge, this was done by the power company and has the earth (copper bar) and neutral connected inside a small box in the post. There is a 50 amp breaker on the hot wire. From this post, there is a 22 meter run of #6 cable to the house, neutral and hot wires only. This is going underground, and can't be changed easily. At the house there is a panel with slots for four breakers only, which will do as it's a small weekend house.
I plan to connect a copper bar earth at the house, my question is should the earth bar be connected to the neutral bar? The panel has an aluminium jumper to connect the two, if I should. I have read that in the US sub panels must not have the earth & neutral connected, I'm not sure if this counts as a sub panel or not.
It's a single 120v supply, i.e. two wires only, but I want to put earthed sockets in the house. The earth from the house panel will be 20 meters away from the earth at the power supply post, if that makes a difference.
Thank you for your attention.