I want to install a ceiling fan where a ceiling light currently exists in my garage. The box for the current light has only two wires coming in however: a black & a white (no ground – looks like original wiring from 1950's). My question is how can I ground the ceiling fan if I install it in this 2-wire box location? Can I run the ground wire from the ceiling fan to a separate nearby ceiling light box which does have a ground wire coming into it? This nearby ceiling box is on the same circuit (i.e. both the ceiling fan and the nearby electrical box are controlled by the same circuit breaker). I realize I would of course need to first install a ceiling fan rated electrical box to attach the ceiling fan to, but can I ground the ceiling fan to this nearby ceiling light box which is properly grounded back to the circuit breaker panel?
Ceiling – ground a ceiling fan to another electrical ceiling box nearby
ceiling-fangrounding
Related Topic
- Electrical – Ceiling Fan with Recessed Lights
- Ceiling fan grounding
- Electrical – connect unused ceiling fan wire with neutral
- Ceiling – Wire Ceiling fan with two switched hots and ground but no common wire
- Wiring – How should I connect a ceiling fan with four 12/2 cables coming in
- Ceiling – How to do with the ground wire from the light fixture when there’s no ground in the box
- Ceiling – Replacing Lighted Ceiling Fan w Fixed Light
- Electrical – Adding recessed lighting to ceiling fan switch
Best Answer
Yes you can
Recent NEC editions allow you to run a retrofit ground wire (equipment grounding conductor) from an ungrounded box/circuit to a grounded branch circuit's ground wire, provided the donor circuit has a large enough ground wire to be a suitable ground for the circuit being retrofitted. (For instance, if you are grounding a 20A circuit this way, the donor circuit would need to have a 12AWG or larger ground wire.) The permission for this is given in NEC 250.130(C):
Furthermore, since ground wires do not need to run with the circuit they are grounding as per NEC 300.4(B)(2):
, you can simply run a bare 14AWG wire from the new ceiling fan box, through the ceiling, to the "donor" box, bring the wire into the box, and connect it to the existing ground wire bundle there.