Hi-MO 5, with a 25A junction box, has been designed with adequate safe margin in terms of current. In contrast, a bifacial module with an Isc of 18.5A will need a junction box with a rated current ...

The humble junction box might not be what you think of when you think of your home's electricity, and you might even wonder what it does. Do you even need one?

Finally, the upstream breakers powering the junction box are fitted with a Kirk F-lock, keyed to coordinate with the transfer block. To connect to shore power, the AMP cable is lowered to the wharf.