It would be an advantage to future builders to have those Wacker Lengths posted on an Excel Spread Sheet and then if it was ever necessary to cut and remove the run the replacement run would be much quicker. Often, when removing runs, the wire is cut in multiple locations making the replacement calculation harder.
I was surfing the net and stumbled upon your blog on piping your RV with Plenum rated duct. Please note these come in all kinds of sizes and fire ratings. Our company manufactures a Residential version of this raceway. We also makes fittings and couplings for the duct to terminate in boxes and couple together. If you ever need information or need to know where you can buy this type of product please don't hesitate to look us up.
www.kwikpath.comKevin Jolly, RCDD
http://www.faa.gov/other_visit/aviation_industry/designees_delegations/training/der_present/la_may/media/Electrical%20Wiring.pdfHere's a link that was discussed on the RV-list. Good info, fer sure.