6
c) ELECTRICAL
WARNING: THIS SHOWER MUST BE EARTHED.
The electrical installation must be in accordance with the current BS.7671 (IEE Wiring Regulations)
and “Part P” of the Building Regulations and/or local regulations.
1.
The shower unit is designed for a single phase AC electrical supply.
Please check the rating plate on the unit to see what details apply to your shower.
AS A
GUIDE ONLY (* Only applies if external earth impedance is less than 0.35 Ohms)
Rating
Cable Sizes
Fuse / MCB Cable Length
6.0mm²
10.0mm²
40A Type B MCB
27m Max.
45m Max.
8.5 / 7.8kW 240 / 230V
6.0mm²
10.0mm²
45A BS.1361 fuse
12m Max.
*
21m Max.
*
6.0mm²
10.0mm²
40A Type B MCB
27m Max.
45m Max.
9.5 / 8.7kW 240 / 230V
6.0mm²
10.0mm²
45A BS.1361 fuse
12m Max.
*
21m Max.
*
10.5 / 9.6kW 240 / 230V
10.0mm²
45A BS.1361 fuse
12m Max.
*
Remember to upgrade the cable if it runs in thermal insulation in a loft, or for a longer distance.
2.
A means for disconnection in all poles must be incorporated in the fixed wiring in accordance with
the wiring rules. We recommend a ceiling switch mounted in a convenient position.
3.
If you have decided to connect the cable on the left hand side then please remove and use the
cable clamp that was provided along the right side (see Diagram 3a/b).
WARNING: IF LEFT HAND SIDE CABLE ENTRY IS USED, THE MAINS CABLE OUTER SHEATH
MUST BE STRIPPED BACK TO THE LEVEL MARKED ON THE BACKPLATE, AND ALL
THREE CONDUCTORS MUST BE FULLY SLEEVED WITH THE SLEEVING PROVIDED
BETWEEN THERE AND THE TERMINAL BLOCK (SEE DIAGRAM 3a).
4.
Connect cable to terminal block making sure that all the retaining screws are
VERY
TIGHT
and that no cable insulation is trapped under the screws.
WARNING: FAILURE TO COMPLY WITH THESE INSTRUCTIONS COULD
RESULT IN FAILURE OF THE TERMINAL BLOCK.
5.
Re-fit the detachable bottom section with the two screws if it was removed.
IMPORTANT: Ensure you connect the flying lead from PCB to the front cover.
6.
Re-fit the front cover, and secure by replacing the top and bottom fastening screws.
