D Da1949 New member Jan 18, 2011 #1 There is a conduit running from the disconnect on the gas furnace to a 4"x4" box overhead. Type NM is fed into the 4x4 box and connected to the wires from the disconnect. Should the ground wires be bonded to the 4"x4" box?
There is a conduit running from the disconnect on the gas furnace to a 4"x4" box overhead. Type NM is fed into the 4x4 box and connected to the wires from the disconnect. Should the ground wires be bonded to the 4"x4" box?
George Stolz Moderator Staff member Location Windsor, CO NEC: 2017 Occupation Hospital Master Electrician Jan 18, 2011 #2 See 250.146.
