Hello everyone.
A recent upgrade from one to two EP11 batteries required fitting an HV-junction box-50 to connect two batteries to the KH-10.5 hybrid inverter. The supplied cable length doesn't give much choice of location, so it's on the wall about 1 metre above the floor of our side passage alongside a bank of PV isolators. There are of course two pairs of unused battery-side sockets as I only have two batteries. I, don't have room for more.
So there are exposed Devalan MC-4 style battery connectors, protected only by their dust caps which just pull off. These connectors are supposed to be "touch safe", and they are for the typical adult male solar installer. For a child or someone with slender fingers, they are not. Never mind what you can do with a small metal object. A careful prod with a multimeter showed 404V DC ready to electrocute all comers.
So I set about making them safer. The -ve socket has slots, so I used a cable tie through those to secure the dust cap through its holes. The +ve socket has nothing you can attach a cable tie to. I used a couple of empty connector bodies, stopped up the cable grip end and clicked them on.
Has anyone got a better solution? Having un-mated, energised MC-4 style connectors in your system is surely on the "DO NOT DO THIS" list.
recentGeek83, East Anglia, UK
24 AIKO-A460-Mah54mb panels spread across 4 strings, facing east, south and west
KH-10.5 inverter, 2x EP11 10.36 kWh batteries and Zappi charger
Intelligent Octopus Go and Outgoing Octopus tariffs.