12
EVOHD+ Installation Guide
Figure 6: Sample Power Requirement Calculations
Power required by devices connected to control panel’s auxiliary output
must not exceed the auxiliary output’s limit:
(A) + (B) + (C) + (D) + (E) + (F) + (G) = 368mA<2000mA = OK
(or 1000mA if a 40VA transformer is used)
Control Panel
aux. output
= 2000mA
61m (200ft)
15m (50ft)
PRT3
(A) = 25mA
K641+
(D) = 110mA
7.5m (25ft
)
15m (50ft)
DM70
(E) = 30mA
7.5m (25ft)
ZX8
(B) = 30mA
30m (100ft)
22 AWG
K641+
(F) = 110mA
15m (50ft)
K641+
(G) = 110mA
91m (300ft)
290m (950ft)
DM60
(C) = 30mA
305m (1000ft)
As indicated in
, this run of wire
can support 2000mA.
Total mA on this run of
wire:
(A) 25mA + (B) 30mA =
55mA<700mA = OK
As indicated in
, this run of wire can
support 456mA. Total mA
on this run of wire: (D)
110mA + (E) 30mA + (F)
110mA + (G) 110mA=
360mA < 456mA = OK
run of wire can support 136mA at the
end of the cable. (A) 25mA + (B) 30mA +
(C) 30mA = 85mA < 136mA = OK
Summary of Contents for EVOHD+
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