OBO Bettermann EUK, System Instructions

Page: 45 / 71

45 | EN EÜK screed-covered duct system
Preparations for mounting
4 Preparations for mounting
4.1 Calculation of the duct lengths
During the planning and determination of the effective cable
lengths of the underfloor installation ducts
2 , the following deduc-
tion dimensions should be taken into account.
Note! The deduction dimensions are always measured from duct stop to
duct stop (see detailed view in Fig. 3).
Article Type Deduction
dimension A
Vertical bend VK... 200 mm
Underfloor junction box/underfloor
device socket UGD/UZD 250
UGD/UZD 350 280 mm
380 mm
Connection shackle VL... 10 mm
Fig. 3:
a
A 380
A 280
A VL
UZD
UGD
250
UZD
UGD
350
A 380
10
Deduction dimensions
Legend
a Distance from socket centre to socket centre
A 280 Deduction dimension to UGD/UZD 250
A 380 Deduction dimension to
UGD/UZD 350
A VL Deduction dimension, connection shackle
Example
a = 2,500 mm
A 250 = 280 mm
A 350 = 380 mm
A VL = 10 mm