An electrical engineer, probably.
The Mab Ring.
BS 7671:2008, Requirements for Electrical Installations, specifies that any number of socket outlets can be added to a final ring circuit (ring main), but the ring main must not supply a floor area exceeding 100 square metres.
The Main Asteroid belt.
Ring Main Unit. Ring main unit is used in a secondary distribution system. It is basically used for an uninterrupted power supply. Alongside, it also protects your secondary side transformer from the occasional transient currents.
He invented the telescope
What is a ring main?
It looks like Jim Ward invented circa 1975.
The O-ring was invented by Niels Christensen (1865-1952); a Danish-American inventor.
The Mab Ring.
Thames Water Ring Main was created in 1993.
The spring ring was first patented in 1900.
=Jupiter has one ring going all around it.=
Jupiter does not have a traditional ring system like Saturn. However, it does have a faint ring system consisting of four main components: the halo ring, main ring, Amalthea gossamer ring, and Thebe gossamer ring.
sherman hallof
JiaJia almighty
how, in simple terms, would you describe a ring main (Specifically medium voltage)
A ring-main unit is a piece of switchgear used on high-voltage distribution ring-main systems (e.g. in the UK at 11 kV). Essentially, it's three switches incorporated into one device used to connect a transformer to a high-voltage ring main. It allows the transformer to be connected/disconnected to the ring main and it also allows the ring main to be 'broken'. Each of the switches has three positions: open, closed, or earthed (grounded); the earth position allows the transformer or either (or both) halves of the ring main to be earthed when maintenance is required.