SYSTEM DESIGN
8
3A spur Pulsacoil feed
spur
Off peak supply (From Elec Co
timeswitch)
Storage heaters
To upper (boost) element
20A double pole switch with flex outlet
and neon (or timer incorporating double
pole switch)
20A double pole switch with flex outlet
and neon.
To lower (off peak) element
Economy 7
controller
Storage heaters
3A spur Pulsacoil feed
spur
To upper (boost)
element
Boost
Switch
To lower (off peak)
element
In addition to the supplies to the immersion heaters,
PulsaCoil III requires a 3 amp supply for the control
circuit. This 3 amp supply must be provided via a fused
3 amp double pole isolator providing 3mm of separation
to both poles.