What is the proper way to do this?
Från 2017 National Electrical Code:
(C) Nongrounding Receptacle Replacement or Branch Circuit Extensions. The equipment grounding conductor of a grounding-type receptacle or a branch-circuit extension shall be permitted to be connected to any of the following: (1) Any accessible point on the grounding electrode system as described in 250.50 (2) Any accessible point on the grounding electrode conductor (3) The equipment grounding terminal bar within the enclosure where the branch circuit for the receptacle or branch circuit originates (4) An equipment grounding conductor that is part of another branch circuit that originates from the enclosure where the branch circuit for the receptacle or branch circuit originates (5) For grounded systems, the grounded service conductor within the service equipment enclosure (6) For ungrounded systems, the grounding terminal bar within the service equipment enclosure
Does the wire need to follow the same path as the ungrounded 2 wire path?
Nej, det är inte nödvändigt, men om det gjorde det skulle det vara bättre.
How would the ground enter the junction box?
Det kan fiskas i en annan öppning med en kabelklemme.
How is it secured?
Till jordkroppens jordkrok och till lådan, om det är metall, med en 10-32 jordskruv.
Det finns många sätt att uppnå detta. Dessa är de föredragna metoderna för handeln men det finns andra godtagbara sätt.
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