User Guide
Landcal Blackbody Source
Type P1600B2
Page 5
4 Electrical Supply Details
4.1 Introduction
A suitable electrical supply for the furnace is required. The furnace is supplied
wired for the type of supply as ordered by the customer. With a small
amount of rewiring, it is possible to use this furnace with other supply voltage
configurations. See Section 4.5 for details.
The furnace is supplied without a mains cable. The specification for a suitable
cable is dependant on the type of supply. A suitable cable size is as follows:
a) For use with single phase, 208 to 240V (up to 50A rating):
PVC insulated 3 x 16mm² (6 AWG wire) core. Fuse supply @ 50A
minimum.
b) For use with 3 phase plus neutral, 220 to 240V / 380 to 415V (up to 16A
per phase):
PVC insulated 5 x 2.5mm² core. Fuse supply @ 16A per phase minimum.
c) For use with 3 phase delta, 208 to 240V (up to 32A per phase):
PVC insulated 4 x 6mm² core. Fuse supply @ 30A per phase minimum.
A permanent connection to an appropriately fused and isolated supply must be
made to the internal terminals as shown in Figs. 2 to 4. A cable strain relief
clamp is provided inside the furnace, located close to the cable entry hole in
the case. The supply point must be within reach of the operator and must
incorporate either an isolated switch which operates on both conductors (single
phase) or all live terminals (three phase), or a quickly removable plug. The
supply must incorporate an earth (ground).
