Hacker News
new
|
past
|
comments
|
ask
|
show
|
jobs
|
submit
login
walrus01
on Feb 21, 2019
|
parent
|
context
|
favorite
| on:
At 18 Stories, Mjøsa Tower Is World’s Tallest Wood...
The SF fire department uses wood ladders because they are non conductive, vs aluminum. They operate in an area with a lot of aerial AC power lines.
Animats
on Feb 21, 2019
[–]
And worse, 600 VDC trolley lines, which are closer to the ground than uninsulated distribution feeders. Unlike power lines, trolley wire covers a sizable fraction of street area.[1] Trying to raise even a 20 foot metal ladder is dangerous.
[1]
https://www.munidiaries.com/wp-content/uploads/2015/11/wires...
walrus01
on Feb 21, 2019
|
parent
[–]
Vancouver has a lot of electric trolley buses, makes me wonder what the fire department has standardized on...
Guidelines
|
FAQ
|
Lists
|
API
|
Security
|
Legal
|
Apply to YC
|
Contact
Search:
