Timeline for Securing LFNC conduit to joists
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Sep 29, 2020 at 11:04 | comment | added | batsplatsterson | @MitchellBieniek - that's correct, one #12 bonded to each box is sufficient. There are many ways to bond the EGC to the boxes and receptacles but since you probably have plenty of room I'd just install a pigtail on the box, another on the receptacle, and splice the two pigtails to the two green wires feeding into and out of the box. | |
| Sep 28, 2020 at 18:36 | comment | added | Mitchell Bieniek | Sorry for double comment - My interpretation of 250.122(C) suggests that I should only have to use 1 ground wire sized for largest circuit (so 12 AWG for three 20A circuits), bond it to each junction box, and pigtail the outlet connection to the junction box to ensure that removing any outlet would not interfere with the rest of the grounds. Is that a correct interpretation? | |
| Sep 28, 2020 at 18:22 | comment | added | Mitchell Bieniek | Okay. And so I can run a single ground wire (was offered 12AWG solid) from the main box to the j-boxes, bond at the J-boxes, and then tie into the j-box ground for the two circuits I plan on adding? Or do I need to run individual ground wires for each circuit, + a ground for the j-boxes? | |
| Sep 28, 2020 at 0:30 | history | edited | batsplatsterson | CC BY-SA 4.0 |
added 88 characters in body
|
| Sep 28, 2020 at 0:21 | comment | added | batsplatsterson | Yes you can use metal boxes as long as you bond the boxes, and yes you can bend the flexible conduit. | |
| Sep 27, 2020 at 23:37 | comment | added | Mitchell Bieniek | Thank you for the response - had two follow up questions: 1) Can I not use metal gangboxes with the proper LNFC fittings? My understanding was that as long as I bond the box to the ground wire I'm running through the conduit, I could use those instead of plastic boxes (was offered free metal boxes and fittings as well). 2) Are there any restrictions regarding how the LNFC is shaped between the 36" of straps? My goal was to do a 90 deg to bend down from ceiling joists to travel down a wall a bit, strap to cinderblocks. | |
| Sep 27, 2020 at 23:14 | comment | added | ThreePhaseEel | One problem -- FS/FD style plastic boxes use hubs designed for rigid conduit, and are not listed for use with LFNC, either directly or via fittings. ENT-type new work boxes are a much better bet, as they'll accept all sorts of conduit connectors. | |
| Sep 27, 2020 at 21:06 | history | answered | batsplatsterson | CC BY-SA 4.0 |