Junction box termination drawings without drawing every wire by hand

A useful junction box termination drawing should show more than a list of terminals. It should make the relationship between the incoming multicore, physical terminal strip and outgoing field cables easy to follow. Junction Box Designer builds that drawing from structured project data instead of asking you to manually draw and align every connection.

What to enter

Start with the JB tag, location and description, then add incoming and outgoing cables. For incoming cores you can record the function or signal type, a panel or terminal reference such as a PLC slot or terminal number, and a plain-language description. PE, screen and spare terminals can be represented separately.

What the drawing shows

The generated diagram places incoming information on the left, the numbered terminal strip in the centre and outgoing field-device groups on the right. Cable/core identity is retained for traceability while useful engineering labels such as 24VDC, Analog Input or a panel terminal reference can be shown more prominently.

Match the physical junction box

Real JBs are not always one long terminal strip. You can add and rename multiple terminal rails, then assign terminals to the rail that matches the physical box. Unused cores in a multicore do not have to become spare terminals unless you actually want a terminal there.

From drawing to site work

The same project also produces a terminal schedule and a commissioning site sheet. That means the drawing, schedule and check sheet all come from the same data rather than being maintained separately.

Generated drawings are documentation aids and should be checked against the actual design and installation by a competent person before construction or commissioning.