This morning (Friday 6 April) a large flat-bed lorry arrived in Goodge Street, Fitzrovia, carrying a brand new transformer and lifting equipment.
A basement cavity underneath the flagstones of Charlotte Place was revealed and an old transformer which was deteriorating from the 1950s was disconnected from the national grid and removed.
A crane on the back of the lorry was used to hoist the old unit out and bring the new one into position. Electricians (aka sparkies) then installed the new unit.
The local electric supply didn’t need to be turned as a switch can be thrown to bypass the transformer because of the low demand for electric over the holiday.
The transformer converts electricity from 25,000 volts into the 240 volt domestic supply which is fed into homes and businesses. Each transformer supplies several streets. Larger buildings have their own unit. The units are oil filled to cool them.