Can the neutral line of the on-site distribution box be exposed

In the main panel, the neutral and ground must be bonded by Main Bonding Jumper (MBJ) wire from manufacturer as crossover tie bar, but in sub-panels, they must be isolated. Never connect the equipment grounding conductor to the neutral bar if the panelboard is not lactated as. Electrical equipment which depends upon the natural circulation of air and convection principles for cooling of exposed surfaces shall be installed so that room air flow over such surfaces is not prevented by walls or by adjacent installed equipment. This is because the transformer's neutral is kept at the same potential as the substation ground grid by the solid ground. However, there are. Electric utilities also design transmission and distribution lines to limit line outages as required by system reliability criteria and to withstand the maximum overvoltages impressed on the system. Conditions such as switching surges, faults, and lightning can cause overvoltages. Electric. The ANSI standard for meter equipment requires the high-leg conductor (208V to neutral) to terminate on the “C” (right) phase of the meter socket enclosure. When replacing equipment in existing facilities that contain a. If the box will be exposed to rain, dust, or sun, you'll need one with higher protection — look for models with IP66 or NEMA 4X ratings to stay safe and compliant. Next, match the box to your electrical load.