Running Wires In Attic Mike Holt

These conductors are usually 12 awg or 10 awg have a matching quick connect to mate to the module wiring on one end and are terminated on a terminal block or overcurrent protection device at the array junction box or inverter location.

Running wires in attic mike holt.

Mike holt code forum archives knob and tube wiring in an old house register. Here s a great document from mike holt that explains article 800 with images. You can t support the cable using the ceiling grid or support wires. Nec attic wiring format.

Kwood kevin wood cmi october 27 2012 10 52pm. I have a 50a 240v circuit that needs to be run from one side of a house to the opposite corner and had planned on using a 6 4 soow cable to run thru the attic. This could run into cutting a narrow opening in the walls to expose the. Protecting the cable is as simple as installing substantial guard strips which can simply be a 1x2 furring strip on each side of the cable if there s no permanent stairs or ladder this protection only has to be provided to.

The home run cables from the modules to the external junction or combiner box for the entire array will use the use 2 or pv wire called out in 690 31 a. If the attic is accessible by permanent stairs or ladder any cable running across the top of joists will have to be protected. The replacement could be very difficult depending on how accessible the old k t wiring is. Save i cannot find this specifically in code so here is my question when romex is run across rafters in an open unfinished attic it is my position that a raceway of some kind 1x3 s or even 2x4 s should first be attached across the affected rafters perhaps 3 to 4 above the joists then the wiring be stapled to the raceway.

682 votes last checked. Btw congratulations being named mike holt s chief moderator for his forum. 334 30 a addresses that runs through holes and notches are considered supported as long as the support studs do not exceed 4 5 appart and the cable is secured within 12 of boxes. The ahj is requiring that we secure our nm cable at everyother truss within 4 5 when we run perpendicular in the attic on trusses.

If you run through a drop ceiling you ll have to install support wires for the cable or support it in another approved manner. Thanks my current term ends in two months unless they decide to keep me around for another year. Cable run across the top of joists. 2 if the installation is to be exposed then you must run pipe pvc is fine there has to be a 4 wire system to the sub panel 2 hots 1 neutral and a ground the sub panel will be a main lug type and the main for this will be in the 200 amp panel remember to strap your pvc pipe every three feet there is nothing to keep you from running it near a water pipe the only time that comes into play is.

Introduction to article 800 communication circuits pdf.