Hi, my new tool.
Jon (Feb 10, 2021), terryjs (Feb 8, 2021), Toolmaker51 (Feb 15, 2021)
NortonDommi (Feb 16, 2021)
Thanks RCTURKA! We've added your Extension Cord Reel to our Extension Cords category,
as well as to your builder page: RCTURKA's Homemade Tools. Your receipt:
New plans added on 11/13: Click here for 2,577 plans for homemade tools.
Toolmaker51 (Feb 15, 2021)
"Remember to be careful using reels with anything that draws a bit of current though" - I got a major dressing down from an electrical design engineer I know when he saw me using a coiled up extension cord with only a few feet run out. Something I had done for many years without a thought. Induction apparently causes a lot of overheating, fires and shorts, something I'd not heard about and nobody had ever pointed out.
Toolmaker51 it may have been when the tool stopped working?
Toolmaker51 (Feb 16, 2021)
A big part is just heat dissipation. Wires are rated to run in free air.
So, under USA code:
Derate if more than a few wires in a raceway (conduit/wire tube).
Derate if in a warm area.
Derate if load is over 80% duty cycle.
Derate if inspector is having a bad day.
So, when we installed our off-grid solar here I had to use rigid conduit (water pipe) but since it goes through the attic to the roof the wires had to be derated 20% for heat. Solar panels are assumed to be 100% duty cycle, derate another 20%.
Also the ground wire can not have any junctions from the stake to the battery controller. I just slipped by not having to use a ground wire the same size as the battery cables, that would have HURT my wallet!
Toolmaker51 (Feb 16, 2021)
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