Carbolite E Series Installation, Operation & Maintenance Instructions Manual page 15

2.6 Electrical Connections
The electrical supply MUST incorporate an earth (ground).
Connection by a qualified electrician with the correct certification to meet local legislation is
recommended.
All E-range furnaces are single-phase models and operate over the voltage ranges 100V to 110V
or 200V-240V. The furnace is wired and has a configured "output power setting" (OP.Hi) related
to supply voltage according to the original order. Check the furnace rating label before
connection, (see Figure 1-1 page 3 for location of rating label). To check that OP.Hi setting is
correct for the appropriate voltage, or to change to another setting, follow the instructions in
section 8.3 page 24.
The electrical supply should be fused at the next standard size equal to or higher than the design
amperage. Where a supply cable is supplied there are internal supply fuses, in which case
customer fusing is preferred but not essential. See section 8.2, page 23 for furnace rated power,
current and fusing information.
All 200 to 240volt furnaces are supplied with 2 leads. Each has a type EL-711 straight plug at on
end to EC 63020 that plugs in the back of the control panel see Figure 1-2 page. The mains plug at
the other end which is either a standard UK plug type
EL-210 to BS1363 fused at 13A or a European plug
type EL-202 to CEE7. If another type of mains plug is
required, cut off the mains plug from one of the leads
and connect the appropriate locally sourced plug. This
should be done by an electrically competent person.
See below for wire colour coding.
Table 2-1
For 100 to110 volt furnaces no mains lead is supplied
and there is a blanking plate which covers the mains
lead socket position (see Figure 1-2 page 3).
On these furnaces drill/punch a hole in the side of the
case for a mains cable to fit through with the
appropriate strain relief glands; the position for this is
shown in Figure 2-23. Terminate the cable inside the
case on the terminal block as shown in Figure 2-24
using the terminals marked L N PE, (see Table 2-1 below for
terminal details). The external connection should be either a
permanent connection to a fused isolator supply or to a socket on
a fused isolator supply; the isolating switch must operate on both
conductors. Make sure that the isolator switch is within in easy
reach of the furnace operator.
Table 2-1. Terminal connection details.
Terminal
Supply
label
L
N
1-phase
PE
USA/Canada
UK/Europe
Common
Cable colour
Cable colours
Brown Red or Black
Blue White
Green or
Green/Yellow
Green/Yellow
MF65-1.01
Figure 2-23. Position of cable entry on 100v to 110v
models with heated lengths of 450 or 600mm.
Figure 2-24. Internal terminal block
for mains wiring connection on 100v to
110v models.
Supply type
Live-Neutral Reversible or Live-Live
To live to either power conductor
To neutral to the other power conductor
To earth (ground) to earth (ground)
E range
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