Screws in masonry probably act as a poor Ufer ground. The current is minuscule.
Comment on Protection
Aqarius@lemmy.world 1 day agoDoesn’t look grounded, though.
deegeese@sopuli.xyz 1 day ago
nao@sh.itjust.works 1 day ago
If it wasn’t grounded the cage wouldn’t block the signal?
ryannathans@aussie.zone 1 day ago
Wrap your phone in aluminium foil and get back to me
psud@aussie.zone 8 hours ago
It is probably more of a reflector rather than blocker, sending the signal back through the wall