The service loop is required by the national guild of service guys. Failure to comply could result in verbal abuse.
It's absolutely right that the NM cable has to be stapled within 12 inches of the box if the box has an internal cable clamp in the box (such as a 2 gang, 3 gang ect) but on a single gang non metallic box ( that doesn't have a cable clamp built in) it shall be stapled no more than 8 inches away from the box. Love your videos by the way!! Very informative.
Very frustrating when working on older homes with 3 inches of wire in the box and no service loop.
Been doing electric for 102yrs, tiktok certified, and never ran into a job where I needed loops!
The comparison of the requirements for the distance to the cable support and the max length between the support and the box allows for significant slack, just not large lengths.
Not code but we often do it especially with coax, cat 5 or telephone the drunk drywallers often wreck our stuff
As someone who does a lot of residential work, service loops make my job have less headaches.
That zigzag is way better than the loop. The loop makes a twist in the wire, making it harder to pull into the box.
A few slack inches between the box and the staple makes sense but an extra foot is something that will get used once in about 5 million times. If the box is made up correctly and neatly pushed in the back of the box, it's rare for the wires to get damaged by drywallers.
Simple- staple it 6" from the box, and run 18" of wire to the box- that's an extra 12" of slack. Or staple 8" away, leave the same 18", and you have 10" of slack. Plenty of room for a useful service loop while still following code.
Even when not mandated, leaving a service loop is a good practice in most electrical installations. Always leave everything better than how you found them, and just because there is a sheet of drywall between your work and the eyeballs does not mean that you should never do outstanding work. Think of who is coming after you.
Don't need 2 feet of loop, but there should be at least 6"
I just stick the head of the cable like an inch into the box until the dry wallers are done then I come back and pull what I pre measured the box would need (no service loops ever needed)
Good report.
Please don’t tell the Starving Electrician this… it will only encourage him.
In earthquake areas having zero slack can mean the house that jiggles around in a quake creates loose connections. The homes I worked on after the Northridge 1994 quake often had this issue. ie circuit is dead at the receptacle; wires were tight as piano strings pre quake. lol In tract homes the scummy builders hide a junction box any where the romex ran out. The box then is sealed up and not seen. Then the quakes motion loosens the connection. In some el cheapo California late 60s early 70s Trac homes they used Aluminum wire. Many got retroftitted to copper pigtails eons ago.
I heard Canadian code requires them. And you're dangerously close up there in Maine 😅
This way of leaving loops would be a lot of headaches on interior walls that are insulated. Those loops would end up being pushed past the face of the studs and then pinched between the drywall and studs.
Had the funny thought that of someone using up all the service loop trimming the ends and then deciding they'd have to pull a whole new run to restore the service loop.
@narlycharley